11-beta-hydroxysteroid dehydrogenase type 2 (11beta-HSD2; corticosteroid 11-beta-dehydrogenase isozyme 2; SDR9C3) is an endoplasmic-reticulum-membrane, NAD+-dependent, unidirectional dehydrogenase of the short-chain dehydrogenase/reductase (SDR) family. It inactivates the glucocorticoids cortisol to cortisone and corticosterone to 11-dehydrocorticosterone, oxidizing active 11beta-hydroxyglucocorticoids to inert 11-oxosteroids using NAD+. In aldosterone-target epithelia (distal nephron, colon, salivary gland) it destroys cortisol locally, protecting the intrinsically non-selective mineralocorticoid receptor from illicit activation by cortisol and thereby conferring aldosterone specificity; it is also highly expressed in placenta, where it shields the fetus from maternal glucocorticoid. Loss-of-function variants cause the syndrome of apparent mineralocorticoid excess (AME), an autosomal-recessive juvenile low-renin hypertension with hypokalemia and metabolic alkalosis, in which cortisol illicitly activates the mineralocorticoid receptor.
| GO Term | Evidence | Action | Reason |
|---|---|---|---|
|
GO:0070523
11-beta-hydroxysteroid dehydrogenase (NAD+) activity
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: Phylogenetically-inferred core molecular function. HSD11B2 is an NAD+-dependent 11beta-hydroxysteroid dehydrogenase that oxidizes cortisol to cortisone; this is the correct, specific molecular-function term and the evolved core activity.
Reason: Matches the experimentally established NAD+-dependent dehydrogenase activity of the enzyme and is at the appropriate level of specificity. This is a core molecular function.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
PMID:8538347
the NAD-dependent type 2 isoform (11 beta-HSD2), first characterised in placental tissue, that is expressed in the mineralocorticoid target tissues, kidney and colon.
|
|
GO:0008211
glucocorticoid metabolic process
|
IBA
GO_REF:0000033 |
ACCEPT |
Summary: Phylogenetically-inferred biological process. HSD11B2 metabolizes glucocorticoids (cortisol/corticosterone), so this is a correct core process term, if somewhat broad relative to the more specific cortisol metabolic process.
Reason: HSD11B2 is a bona fide glucocorticoid-metabolizing enzyme; this process term is well supported and represents a core biological process.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
PMID:8538347
catalyses the interconversion of hormonally active cortisol to inactive cortisone
|
|
GO:0005783
endoplasmic reticulum
|
IEA
GO_REF:0000044 |
ACCEPT |
Summary: SubCell-keyword-derived ER localization. Correct but less specific than the experimentally supported endoplasmic reticulum membrane localization.
Reason: HSD11B2 is an ER-resident enzyme; the ER term is a correct (if broader) compartment. The more specific and core term is ER membrane (GO:0005789).
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
SUBCELLULAR LOCATION: Microsome
|
|
GO:0016616
oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor
|
IEA
GO_REF:0000117 |
ACCEPT |
Summary: ARBA-derived broad oxidoreductase parent term. Correct as a general parent of the specific 11beta-HSD (NAD+) activity, but not informative on its own.
Reason: A correct broader parent of GO:0070523. Acceptable as a general electronic annotation; the specific term GO:0070523 captures the core function.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
|
|
GO:0070523
11-beta-hydroxysteroid dehydrogenase (NAD+) activity
|
IEA
GO_REF:0000116 |
ACCEPT |
Summary: Rhea/RHEA-mapping-derived MF, matching the curated catalytic-activity reactions (RHEA:50208 cortisol->cortisone; RHEA:42204 corticosterone->11-dehydrocorticosterone; RHEA:53116 generic). Correct core molecular function.
Reason: The Rhea reaction mappings correspond exactly to the enzyme's NAD+-dependent 11beta-HSD activity. Core molecular function (duplicate term id, correctly annotated).
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=corticosterone + NAD(+) = 11-dehydrocorticosterone + NADH +
|
|
GO:0001666
response to hypoxia
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: Ensembl-projected from rat ortholog (P50233). HSD11B2 expression is modulated by hypoxia in placenta, but this is a physiological-context response term rather than a core molecular role of the enzyme.
Reason: Plausible as electronically projected regulation/response, but peripheral to the enzyme's core dehydrogenase function. Retain as non-core context.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
TISSUE SPECIFICITY: Expressed in kidney, placenta, pancreas, prostate,
|
|
GO:0002017
regulation of blood volume by renal aldosterone
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: Ensembl-projected from rat ortholog. Mechanistically apt downstream physiology - by destroying cortisol in the distal nephron, HSD11B2 confers aldosterone specificity on the mineralocorticoid receptor, and its loss causes low-renin hypertension (AME). This is a downstream physiological process, not the molecular core.
Reason: Well aligned with the enzyme's role in aldosterone-target tissues (pre-receptor protection of the MR), but represents downstream physiology rather than the core molecular function. Retain as non-core.
Supporting Evidence:
PMID:8538347
is vital for dictating specificity for the mineralocorticoid receptor
file:human/HSD11B2/HSD11B2-uniprot.txt
thus protecting the
|
|
GO:0005496
steroid binding
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: Ensembl-projected from rat ortholog. The enzyme binds steroid substrates (cortisol, corticosterone) as part of catalysis; substrate binding is implicit in the catalytic MF and is supporting rather than a distinct core function.
Reason: Correct (the enzyme binds steroid substrates) but subsumed by the catalytic molecular function; retain as non-core supporting activity.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
|
|
GO:0007565
female pregnancy
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: Ensembl-projected from rat ortholog. Placental 11beta-HSD2 shields the fetus from maternal glucocorticoid and is highly expressed in placenta; this is a genuine physiological context but not the molecular core function.
Reason: Supported by the enzyme's high placental expression and its barrier role against maternal glucocorticoids, but represents peripheral physiology. Retain as non-core.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
TISSUE SPECIFICITY: Expressed in kidney, placenta, pancreas, prostate,
PMID:8538347
first characterised in placental tissue
|
|
GO:0008211
glucocorticoid metabolic process
|
IEA
GO_REF:0000107 |
ACCEPT |
Summary: Ensembl-projected duplicate of the IBA glucocorticoid metabolic process annotation. Correct core biological process.
Reason: Duplicate of the well-supported core process term; HSD11B2 metabolizes glucocorticoids.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
|
|
GO:0009410
response to xenobiotic stimulus
|
IEA
GO_REF:0000107 |
MARK AS OVER ANNOTATED |
Summary: Ensembl-projected from rat ortholog. HSD11B2 is inhibited by xenobiotics such as glycyrrhetinic acid (liquorice) and organotins, but "response to xenobiotic stimulus" implies a regulated cellular response, which is weak for this enzyme; being a drug target is not the same as mounting a xenobiotic response.
Reason: The enzyme is inhibited by xenobiotics (it is a pharmacological target), but this does not equate to the gene participating in a cellular response-to-xenobiotic process. Likely an over-annotation from electronic projection.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
ACTIVITY REGULATION: Inhibited by glycyrrhetinic acid (derived from
|
|
GO:0032094
response to food
|
IEA
GO_REF:0000107 |
MARK AS OVER ANNOTATED |
Summary: Ensembl-projected from rat ortholog. A physiological-context response term with no clear connection to the enzyme's molecular mechanism in humans.
Reason: Peripheral response-to-stimulus term projected from rodent physiology, not reflecting a core function of HSD11B2. Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
|
|
GO:0032868
response to insulin
|
IEA
GO_REF:0000107 |
MARK AS OVER ANNOTATED |
Summary: Ensembl-projected from rat ortholog. A physiological-context response term; not part of the enzyme's core molecular function.
Reason: Peripheral response-to-stimulus term projected from rodent data; not a core function of the enzyme. Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
|
|
GO:0045880
positive regulation of smoothened signaling pathway
|
IEA
GO_REF:0000107 |
MARK AS OVER ANNOTATED |
Summary: Ensembl-projected from mouse ortholog (P51661). Proposed to act via oxidation of 7beta-hydroxycholesterol to 7-ketocholesterol, a precursor of an oxysterol that activates smoothened (SMO); this is a By-similarity, distal/indirect link not demonstrated for human HSD11B2 and using the non-physiological NADP+-dependent oxysterol activity.
Reason: Indirect, By-similarity-only pathway link via a minor oxysterol side activity; not demonstrated for the human enzyme and downstream of its molecular role. Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
which activates smoothened (SMO) and the smoothened
|
|
GO:0047022
7-beta-hydroxysteroid dehydrogenase (NADP+) activity
|
IEA
GO_REF:0000120 |
MARK AS OVER ANNOTATED |
Summary: Multi-method-IEA (and mouse-ortholog-derived) minor side activity. In vitro HSD11B2 can interconvert oxysterols (7-oxocholesterol/7beta-hydroxycholesterol; 7beta,25-diOH-cholesterol) using NADP+, but this uses the opposite cofactor to its physiological NAD+-dependent dehydrogenase role and is a minor, largely By-similarity activity.
Reason: A real but minor in-vitro oxysterol activity with the non-physiological NADP+ cofactor; not the enzyme's core evolved function (NAD+-dependent 11beta-HSD). Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=7-oxocholesterol + NADPH + H(+) = 7beta-hydroxycholesterol +
|
|
GO:0048545
response to steroid hormone
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: Ensembl-projected from rat ortholog. Broad response-to-steroid-hormone term; HSD11B2 acts on steroid substrates but "response to steroid hormone" is a context term rather than the enzyme's molecular role.
Reason: Broad context term subsumed by the enzyme's steroid-metabolizing function; retain as non-core rather than core.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
|
|
GO:0051287
NAD binding
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: Ensembl-projected from rat ortholog. HSD11B2 is an NAD+-dependent enzyme with a Rossmann-fold NAD-binding region (residues 82-111); NAD binding is a correct supporting molecular function.
Reason: Correct (NAD+ is the physiological cofactor and the Rossmann fold binds NAD), but a supporting MF subsumed by the catalytic activity; retain as non-core.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
|
|
GO:0051384
response to glucocorticoid
|
IEA
GO_REF:0000107 |
KEEP AS NON CORE |
Summary: Ensembl-projected from rat ortholog. Glucocorticoids are the enzyme's substrates; "response to glucocorticoid" is a context/substrate term rather than the core molecular function.
Reason: Reflects the substrate context of the enzyme; subsumed by its glucocorticoid-metabolizing function. Retain as non-core.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Functions as a dehydrogenase (oxidase), thereby decreasing the
|
|
GO:0045880
positive regulation of smoothened signaling pathway
|
ISS
GO_REF:0000024 |
MARK AS OVER ANNOTATED |
Summary: ISS transfer from mouse ortholog (MGI:104720). Same indirect, By-similarity oxysterol-to-SMO link as the Ensembl-projected annotation; not demonstrated for human HSD11B2.
Reason: Indirect, similarity-based pathway link via a minor oxysterol activity; not a core function of the human enzyme (consistent with the duplicate IEA annotation). Likely over-annotation.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
which activates smoothened (SMO) and the smoothened
|
|
GO:0047022
7-beta-hydroxysteroid dehydrogenase (NADP+) activity
|
ISS
GO_REF:0000024 |
MARK AS OVER ANNOTATED |
Summary: ISS transfer from mouse ortholog (P51661) of the minor NADP+-dependent oxysterol interconversion activity. Not the enzyme's core NAD+-dependent function.
Reason: Minor in-vitro oxysterol activity with the non-physiological NADP+ cofactor; consistent with the duplicate IEA annotation. Likely over-annotation relative to the core NAD+-dependent 11beta-HSD function.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
Reaction=7-oxocholesterol + NADPH + H(+) = 7beta-hydroxycholesterol +
|
|
GO:0034650
cortisol metabolic process
|
IMP
PMID:8538347 Hypertension in the syndrome of apparent mineralocorticoid e... |
ACCEPT |
Summary: Experimental (IMP) annotation from the AME kindred with the R374X truncating mutation, in which NAD-dependent 11beta-HSD activity is severely attenuated and cortisol is not converted to cortisone. This is the specific, core biological process (a child of glucocorticoid metabolic process).
Reason: Directly supported experimental annotation - loss of HSD11B2 impairs cortisol->cortisone conversion, defining the enzyme's role in cortisol metabolism. Core biological process at the appropriate level of specificity.
Supporting Evidence:
PMID:8538347
catalyses the interconversion of hormonally active cortisol to inactive cortisone
PMID:8538347
NAD-dependent 11 beta-HSD activity was severely attenuated in the stillbirth placenta compared with control placental tissue
|
|
GO:0070523
11-beta-hydroxysteroid dehydrogenase (NAD+) activity
|
IMP
PMID:8538347 Hypertension in the syndrome of apparent mineralocorticoid e... |
ACCEPT |
Summary: Experimental (IMP) annotation - the AME-causing R374X truncating mutation severely attenuates NAD-dependent 11beta-HSD activity, confirming the enzyme's core NAD+-dependent 11beta-hydroxysteroid dehydrogenase function.
Reason: Directly supported experimental molecular-function annotation; the loss-of-function mutation abolishes the NAD-dependent dehydrogenase activity. Core molecular function.
Supporting Evidence:
PMID:8538347
NAD-dependent 11 beta-HSD activity was severely attenuated in the stillbirth placenta compared with control placental tissue
|
|
GO:0005789
endoplasmic reticulum membrane
|
TAS
Reactome:R-HSA-194023 |
ACCEPT |
Summary: Reactome TAS localization to the ER membrane, consistent with experimental evidence that HSD11B2 is an ER-membrane-anchored enzyme (its N-terminal anchor determines orientation in the ER membrane). Core cellular localization.
Reason: Well supported (Reactome plus experimental UniProt evidence); the enzyme is an ER-membrane protein. Core cellular component.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
SUBCELLULAR LOCATION: Microsome
|
|
GO:0005789
endoplasmic reticulum membrane
|
TAS
Reactome:R-HSA-9759259 |
ACCEPT |
Summary: Reactome TAS localization to the ER membrane (duplicate term id from a second Reactome reaction). Consistent with the enzyme's ER-membrane residence.
Reason: Duplicate of the well-supported ER-membrane localization; correct core cellular component.
Supporting Evidence:
file:human/HSD11B2/HSD11B2-uniprot.txt
SUBCELLULAR LOCATION: Microsome
|
HSD11B2 = 11-beta-hydroxysteroid dehydrogenase type 2 (corticosteroid 11-beta-dehydrogenase
isozyme 2; SDR9C3). Short-chain dehydrogenase/reductase (SDR) family, Rossmann-fold NAD-binding
domain (UniProt: Pfam PF00106 adh_short; PROSITE ADH_SHORT; act site Tyr232 proton acceptor;
NAD binding 82..111).
Molecular function. NAD(+)-dependent 11beta-hydroxysteroid dehydrogenase. Oxidises active
11beta-hydroxyglucocorticoids to inactive 11-oxosteroids: cortisol -> cortisone (RHEA:50208),
corticosterone -> 11-dehydrocorticosterone (RHEA:42204), and the generic reaction
"11beta-hydroxysteroid + NAD+ = 11-oxosteroid + NADH + H+" (RHEA:53116). PhysiologicalDirection
is left-to-right (unidirectional dehydrogenase in vivo), in contrast to HSD11B1 which acts as an
11-oxosteroid reductase. UniProt FUNCTION: "Catalyzes the conversion of biologically active
11beta-hydroxyglucocorticoids (11beta-hydroxysteroid) such as cortisol, to inactive
11-ketoglucocorticoids (11-oxosteroid) such as cortisone, in the presence of NAD(+)".
KM for cortisol ~26-84 nM; for corticosterone ~5-6 nM (high-affinity). Uses NAD+ (not NADP+)
as cofactor — Glu115 in cofactor-binding domain dictates NAD+ specificity (mutagenesis
E115K/Q abolishes cofactor specificity, PubMed:11238516).
Physiological role. UniProt: "Functions as a dehydrogenase (oxidase), thereby decreasing
the concentration of active glucocorticoids, thus protecting the nonselective mineralocorticoid
receptor from occupation by glucocorticoids." In aldosterone-target epithelia (distal nephron,
colon, salivary gland) it pre-receptor destroys cortisol locally, conferring aldosterone
specificity on the (intrinsically non-selective) mineralocorticoid receptor NR3C2. PMID:8538347
abstract: "11 beta-hydroxysteroid dehydrogenase (11 beta-HSD) catalyses the interconversion of
hormonally active cortisol to inactive cortisone and is vital for dictating specificity for the
mineralocorticoid receptor." Highly expressed in placenta (shields fetus from maternal
glucocorticoid) — HPA tissue enrichment: intestine, kidney, salivary gland. Also interacts with
ligand-free cytoplasmic NR3C2 (PubMed:11350956).
Localization. ER membrane (GO:0005789), microsome. N-terminal anchor sequence determines
orientation in the ER membrane (PubMed:10497248). SubCell keyword -> GO:0005783 ER (IEA).
Disease. Loss-of-function variants cause Apparent Mineralocorticoid Excess (AME, MIM:218030),
an autosomal-recessive low-renin juvenile hypertension with hypokalemia/metabolic alkalosis,
nephrocalcinosis; cortisol illicitly activates the MR. Many characterized AME variants in UniProt
(R208C/H, R213C, A328V, RY337-338->H, R374X truncation etc.), all reducing/abolishing enzyme
activity. Liquorice (glycyrrhetinic acid) inhibits the enzyme -> acquired AME-like hypertension.
PMID:8538347 = R374X (374..405 del) truncation in AME kindred; supports both cortisol metabolic
process (IMP) and 11beta-HSD (NAD+) activity (IMP).
These are electronically projected from rat ortholog experimental data. Adjudication:
- GO:0008211 glucocorticoid metabolic process — CORE, well supported (dup of IBA). ACCEPT.
- GO:0002017 regulation of blood volume by renal aldosterone — mechanistically apt (pre-receptor
protection of MR in distal nephron confers aldosterone specificity; AME is low-renin
hypertension). KEEP_AS_NON_CORE (downstream physiology, not the molecular core).
- GO:0007565 female pregnancy — placental 11beta-HSD2 shields fetus from maternal glucocorticoid;
plausible, high placental expression. KEEP_AS_NON_CORE.
- GO:0051384 response to glucocorticoid — substrate/context term; KEEP_AS_NON_CORE.
- GO:0048545 response to steroid hormone — broad parent of the above; KEEP_AS_NON_CORE.
- GO:0001666 response to hypoxia — HSD11B2 is placental/hypoxia-regulated in rat; peripheral.
KEEP_AS_NON_CORE.
- GO:0009410 response to xenobiotic stimulus — inhibited by liquorice/xenobiotics but "response
to" implies a regulated cellular response, weak for this enzyme; MARK_AS_OVER_ANNOTATED.
- GO:0032094 response to food, GO:0032868 response to insulin — physiological-context projections
from rat; peripheral, not the gene's molecular role. MARK_AS_OVER_ANNOTATED.
- GO:0005496 steroid binding (MF, ECO:0000265) — substrate binding implicit in the catalytic MF;
keep as supporting/non-core. KEEP_AS_NON_CORE.
id: P80365
gene_symbol: HSD11B2
product_type: PROTEIN
status: COMPLETE
taxon:
id: NCBITaxon:9606
label: Homo sapiens
description: 11-beta-hydroxysteroid dehydrogenase type 2 (11beta-HSD2; corticosteroid
11-beta-dehydrogenase isozyme 2; SDR9C3) is an endoplasmic-reticulum-membrane,
NAD+-dependent, unidirectional dehydrogenase of the short-chain dehydrogenase/reductase
(SDR) family. It inactivates the glucocorticoids cortisol to cortisone and corticosterone
to 11-dehydrocorticosterone, oxidizing active 11beta-hydroxyglucocorticoids to inert
11-oxosteroids using NAD+. In aldosterone-target epithelia (distal nephron, colon,
salivary gland) it destroys cortisol locally, protecting the intrinsically non-selective
mineralocorticoid receptor from illicit activation by cortisol and thereby conferring
aldosterone specificity; it is also highly expressed in placenta, where it shields
the fetus from maternal glucocorticoid. Loss-of-function variants cause the syndrome
of apparent mineralocorticoid excess (AME), an autosomal-recessive juvenile low-renin
hypertension with hypokalemia and metabolic alkalosis, in which cortisol illicitly
activates the mineralocorticoid receptor.
existing_annotations:
- term:
id: GO:0070523
label: 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: enables
review:
summary: Phylogenetically-inferred core molecular function. HSD11B2 is an NAD+-dependent
11beta-hydroxysteroid dehydrogenase that oxidizes cortisol to cortisone; this
is the correct, specific molecular-function term and the evolved core activity.
action: ACCEPT
reason: Matches the experimentally established NAD+-dependent dehydrogenase activity
of the enzyme and is at the appropriate level of specificity. This is a core
molecular function.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- reference_id: PMID:8538347
supporting_text: the NAD-dependent type 2 isoform (11 beta-HSD2), first characterised
in placental tissue, that is expressed in the mineralocorticoid target tissues,
kidney and colon.
- term:
id: GO:0008211
label: glucocorticoid metabolic process
evidence_type: IBA
original_reference_id: GO_REF:0000033
qualifier: involved_in
review:
summary: Phylogenetically-inferred biological process. HSD11B2 metabolizes glucocorticoids
(cortisol/corticosterone), so this is a correct core process term, if somewhat
broad relative to the more specific cortisol metabolic process.
action: ACCEPT
reason: HSD11B2 is a bona fide glucocorticoid-metabolizing enzyme; this process
term is well supported and represents a core biological process.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
the
- reference_id: PMID:8538347
supporting_text: catalyses the interconversion of hormonally active cortisol
to inactive cortisone
- term:
id: GO:0005783
label: endoplasmic reticulum
evidence_type: IEA
original_reference_id: GO_REF:0000044
qualifier: located_in
review:
summary: SubCell-keyword-derived ER localization. Correct but less specific than
the experimentally supported endoplasmic reticulum membrane localization.
action: ACCEPT
reason: HSD11B2 is an ER-resident enzyme; the ER term is a correct (if broader)
compartment. The more specific and core term is ER membrane (GO:0005789).
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: 'SUBCELLULAR LOCATION: Microsome'
- term:
id: GO:0016616
label: oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP
as acceptor
evidence_type: IEA
original_reference_id: GO_REF:0000117
qualifier: enables
review:
summary: ARBA-derived broad oxidoreductase parent term. Correct as a general parent
of the specific 11beta-HSD (NAD+) activity, but not informative on its own.
action: ACCEPT
reason: A correct broader parent of GO:0070523. Acceptable as a general electronic
annotation; the specific term GO:0070523 captures the core function.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- term:
id: GO:0070523
label: 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
evidence_type: IEA
original_reference_id: GO_REF:0000116
qualifier: enables
review:
summary: Rhea/RHEA-mapping-derived MF, matching the curated catalytic-activity
reactions (RHEA:50208 cortisol->cortisone; RHEA:42204 corticosterone->11-dehydrocorticosterone;
RHEA:53116 generic). Correct core molecular function.
action: ACCEPT
reason: The Rhea reaction mappings correspond exactly to the enzyme's NAD+-dependent
11beta-HSD activity. Core molecular function (duplicate term id, correctly annotated).
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=corticosterone + NAD(+) = 11-dehydrocorticosterone
+ NADH +
- term:
id: GO:0001666
label: response to hypoxia
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from rat ortholog (P50233). HSD11B2 expression is modulated
by hypoxia in placenta, but this is a physiological-context response term rather
than a core molecular role of the enzyme.
action: KEEP_AS_NON_CORE
reason: Plausible as electronically projected regulation/response, but peripheral
to the enzyme's core dehydrogenase function. Retain as non-core context.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: 'TISSUE SPECIFICITY: Expressed in kidney, placenta, pancreas,
prostate,'
- term:
id: GO:0002017
label: regulation of blood volume by renal aldosterone
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from rat ortholog. Mechanistically apt downstream physiology
- by destroying cortisol in the distal nephron, HSD11B2 confers aldosterone
specificity on the mineralocorticoid receptor, and its loss causes low-renin
hypertension (AME). This is a downstream physiological process, not the molecular
core.
action: KEEP_AS_NON_CORE
reason: Well aligned with the enzyme's role in aldosterone-target tissues (pre-receptor
protection of the MR), but represents downstream physiology rather than the
core molecular function. Retain as non-core.
supported_by:
- reference_id: PMID:8538347
supporting_text: is vital for dictating specificity for the mineralocorticoid
receptor
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: thus protecting the
- term:
id: GO:0005496
label: steroid binding
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: enables
review:
summary: Ensembl-projected from rat ortholog. The enzyme binds steroid substrates
(cortisol, corticosterone) as part of catalysis; substrate binding is implicit
in the catalytic MF and is supporting rather than a distinct core function.
action: KEEP_AS_NON_CORE
reason: Correct (the enzyme binds steroid substrates) but subsumed by the catalytic
molecular function; retain as non-core supporting activity.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- term:
id: GO:0007565
label: female pregnancy
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from rat ortholog. Placental 11beta-HSD2 shields the
fetus from maternal glucocorticoid and is highly expressed in placenta; this
is a genuine physiological context but not the molecular core function.
action: KEEP_AS_NON_CORE
reason: Supported by the enzyme's high placental expression and its barrier role
against maternal glucocorticoids, but represents peripheral physiology. Retain
as non-core.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: 'TISSUE SPECIFICITY: Expressed in kidney, placenta, pancreas,
prostate,'
- reference_id: PMID:8538347
supporting_text: first characterised in placental tissue
- term:
id: GO:0008211
label: glucocorticoid metabolic process
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected duplicate of the IBA glucocorticoid metabolic process
annotation. Correct core biological process.
action: ACCEPT
reason: Duplicate of the well-supported core process term; HSD11B2 metabolizes
glucocorticoids.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
the
- term:
id: GO:0009410
label: response to xenobiotic stimulus
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from rat ortholog. HSD11B2 is inhibited by xenobiotics
such as glycyrrhetinic acid (liquorice) and organotins, but "response to xenobiotic
stimulus" implies a regulated cellular response, which is weak for this enzyme;
being a drug target is not the same as mounting a xenobiotic response.
action: MARK_AS_OVER_ANNOTATED
reason: The enzyme is inhibited by xenobiotics (it is a pharmacological target),
but this does not equate to the gene participating in a cellular response-to-xenobiotic
process. Likely an over-annotation from electronic projection.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: 'ACTIVITY REGULATION: Inhibited by glycyrrhetinic acid (derived
from'
- term:
id: GO:0032094
label: response to food
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from rat ortholog. A physiological-context response
term with no clear connection to the enzyme's molecular mechanism in humans.
action: MARK_AS_OVER_ANNOTATED
reason: Peripheral response-to-stimulus term projected from rodent physiology,
not reflecting a core function of HSD11B2. Likely over-annotation.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
the
- term:
id: GO:0032868
label: response to insulin
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from rat ortholog. A physiological-context response
term; not part of the enzyme's core molecular function.
action: MARK_AS_OVER_ANNOTATED
reason: Peripheral response-to-stimulus term projected from rodent data; not a
core function of the enzyme. Likely over-annotation.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
the
- term:
id: GO:0045880
label: positive regulation of smoothened signaling pathway
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from mouse ortholog (P51661). Proposed to act via oxidation
of 7beta-hydroxycholesterol to 7-ketocholesterol, a precursor of an oxysterol
that activates smoothened (SMO); this is a By-similarity, distal/indirect link
not demonstrated for human HSD11B2 and using the non-physiological NADP+-dependent
oxysterol activity.
action: MARK_AS_OVER_ANNOTATED
reason: Indirect, By-similarity-only pathway link via a minor oxysterol side activity;
not demonstrated for the human enzyme and downstream of its molecular role.
Likely over-annotation.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: which activates smoothened (SMO) and the smoothened
- term:
id: GO:0047022
label: 7-beta-hydroxysteroid dehydrogenase (NADP+) activity
evidence_type: IEA
original_reference_id: GO_REF:0000120
qualifier: enables
review:
summary: Multi-method-IEA (and mouse-ortholog-derived) minor side activity. In
vitro HSD11B2 can interconvert oxysterols (7-oxocholesterol/7beta-hydroxycholesterol;
7beta,25-diOH-cholesterol) using NADP+, but this uses the opposite cofactor
to its physiological NAD+-dependent dehydrogenase role and is a minor, largely
By-similarity activity.
action: MARK_AS_OVER_ANNOTATED
reason: A real but minor in-vitro oxysterol activity with the non-physiological
NADP+ cofactor; not the enzyme's core evolved function (NAD+-dependent 11beta-HSD).
Likely over-annotation.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=7-oxocholesterol + NADPH + H(+) = 7beta-hydroxycholesterol
+
- term:
id: GO:0048545
label: response to steroid hormone
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from rat ortholog. Broad response-to-steroid-hormone
term; HSD11B2 acts on steroid substrates but "response to steroid hormone" is
a context term rather than the enzyme's molecular role.
action: KEEP_AS_NON_CORE
reason: Broad context term subsumed by the enzyme's steroid-metabolizing function;
retain as non-core rather than core.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- term:
id: GO:0051287
label: NAD binding
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: enables
review:
summary: Ensembl-projected from rat ortholog. HSD11B2 is an NAD+-dependent enzyme
with a Rossmann-fold NAD-binding region (residues 82-111); NAD binding is a
correct supporting molecular function.
action: KEEP_AS_NON_CORE
reason: Correct (NAD+ is the physiological cofactor and the Rossmann fold binds
NAD), but a supporting MF subsumed by the catalytic activity; retain as non-core.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
- term:
id: GO:0051384
label: response to glucocorticoid
evidence_type: IEA
original_reference_id: GO_REF:0000107
qualifier: involved_in
review:
summary: Ensembl-projected from rat ortholog. Glucocorticoids are the enzyme's
substrates; "response to glucocorticoid" is a context/substrate term rather
than the core molecular function.
action: KEEP_AS_NON_CORE
reason: Reflects the substrate context of the enzyme; subsumed by its glucocorticoid-metabolizing
function. Retain as non-core.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Functions as a dehydrogenase (oxidase), thereby decreasing
the
- term:
id: GO:0045880
label: positive regulation of smoothened signaling pathway
evidence_type: ISS
original_reference_id: GO_REF:0000024
qualifier: involved_in
review:
summary: ISS transfer from mouse ortholog (MGI:104720). Same indirect, By-similarity
oxysterol-to-SMO link as the Ensembl-projected annotation; not demonstrated
for human HSD11B2.
action: MARK_AS_OVER_ANNOTATED
reason: Indirect, similarity-based pathway link via a minor oxysterol activity;
not a core function of the human enzyme (consistent with the duplicate IEA annotation).
Likely over-annotation.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: which activates smoothened (SMO) and the smoothened
- term:
id: GO:0047022
label: 7-beta-hydroxysteroid dehydrogenase (NADP+) activity
evidence_type: ISS
original_reference_id: GO_REF:0000024
qualifier: enables
review:
summary: ISS transfer from mouse ortholog (P51661) of the minor NADP+-dependent
oxysterol interconversion activity. Not the enzyme's core NAD+-dependent function.
action: MARK_AS_OVER_ANNOTATED
reason: Minor in-vitro oxysterol activity with the non-physiological NADP+ cofactor;
consistent with the duplicate IEA annotation. Likely over-annotation relative
to the core NAD+-dependent 11beta-HSD function.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=7-oxocholesterol + NADPH + H(+) = 7beta-hydroxycholesterol
+
- term:
id: GO:0034650
label: cortisol metabolic process
evidence_type: IMP
original_reference_id: PMID:8538347
qualifier: involved_in
review:
summary: Experimental (IMP) annotation from the AME kindred with the R374X truncating
mutation, in which NAD-dependent 11beta-HSD activity is severely attenuated
and cortisol is not converted to cortisone. This is the specific, core biological
process (a child of glucocorticoid metabolic process).
action: ACCEPT
reason: Directly supported experimental annotation - loss of HSD11B2 impairs cortisol->cortisone
conversion, defining the enzyme's role in cortisol metabolism. Core biological
process at the appropriate level of specificity.
supported_by:
- reference_id: PMID:8538347
supporting_text: catalyses the interconversion of hormonally active cortisol
to inactive cortisone
- reference_id: PMID:8538347
supporting_text: NAD-dependent 11 beta-HSD activity was severely attenuated
in the stillbirth placenta compared with control placental tissue
- term:
id: GO:0070523
label: 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
evidence_type: IMP
original_reference_id: PMID:8538347
qualifier: enables
review:
summary: Experimental (IMP) annotation - the AME-causing R374X truncating mutation
severely attenuates NAD-dependent 11beta-HSD activity, confirming the enzyme's
core NAD+-dependent 11beta-hydroxysteroid dehydrogenase function.
action: ACCEPT
reason: Directly supported experimental molecular-function annotation; the loss-of-function
mutation abolishes the NAD-dependent dehydrogenase activity. Core molecular
function.
supported_by:
- reference_id: PMID:8538347
supporting_text: NAD-dependent 11 beta-HSD activity was severely attenuated
in the stillbirth placenta compared with control placental tissue
- term:
id: GO:0005789
label: endoplasmic reticulum membrane
evidence_type: TAS
original_reference_id: Reactome:R-HSA-194023
qualifier: located_in
review:
summary: Reactome TAS localization to the ER membrane, consistent with experimental
evidence that HSD11B2 is an ER-membrane-anchored enzyme (its N-terminal anchor
determines orientation in the ER membrane). Core cellular localization.
action: ACCEPT
reason: Well supported (Reactome plus experimental UniProt evidence); the enzyme
is an ER-membrane protein. Core cellular component.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: 'SUBCELLULAR LOCATION: Microsome'
- term:
id: GO:0005789
label: endoplasmic reticulum membrane
evidence_type: TAS
original_reference_id: Reactome:R-HSA-9759259
qualifier: located_in
review:
summary: Reactome TAS localization to the ER membrane (duplicate term id from a
second Reactome reaction). Consistent with the enzyme's ER-membrane residence.
action: ACCEPT
reason: Duplicate of the well-supported ER-membrane localization; correct core
cellular component.
supported_by:
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: 'SUBCELLULAR LOCATION: Microsome'
core_functions:
- description: NAD+-dependent 11beta-hydroxysteroid dehydrogenase that oxidizes active
11beta-hydroxyglucocorticoids (cortisol, corticosterone) to inactive 11-oxosteroids
(cortisone, 11-dehydrocorticosterone) on the endoplasmic reticulum membrane, thereby
inactivating glucocorticoids and, in aldosterone-target epithelia, protecting
the mineralocorticoid receptor from illicit activation by cortisol.
molecular_function:
id: GO:0070523
label: 11-beta-hydroxysteroid dehydrogenase (NAD+) activity
directly_involved_in:
- id: GO:0034650
label: cortisol metabolic process
- id: GO:0008211
label: glucocorticoid metabolic process
locations:
- id: GO:0005789
label: endoplasmic reticulum membrane
supported_by:
- reference_id: PMID:8538347
supporting_text: catalyses the interconversion of hormonally active cortisol to
inactive cortisone
- reference_id: file:human/HSD11B2/HSD11B2-uniprot.txt
supporting_text: Reaction=cortisol + NAD(+) = cortisone + NADH + H(+);
references:
- id: GO_REF:0000024
title: Manual transfer of experimentally-verified manual GO annotation data to orthologs
by curator judgment of sequence similarity
findings: []
- id: GO_REF:0000033
title: Annotation inferences using phylogenetic trees
findings: []
- id: GO_REF:0000044
title: Gene Ontology annotation based on UniProtKB/Swiss-Prot Subcellular Location
vocabulary mapping, accompanied by conservative changes to GO terms applied by
UniProt
findings: []
- id: GO_REF:0000107
title: Automatic transfer of experimentally verified manual GO annotation data to
orthologs using Ensembl Compara
findings: []
- id: GO_REF:0000116
title: Automatic Gene Ontology annotation based on Rhea mapping
findings: []
- id: GO_REF:0000117
title: Electronic Gene Ontology annotations created by ARBA machine learning models
findings: []
- id: GO_REF:0000120
title: Combined Automated Annotation using Multiple IEA Methods
findings: []
- id: PMID:8538347
title: Hypertension in the syndrome of apparent mineralocorticoid excess due to
mutation of the 11 beta-hydroxysteroid dehydrogenase type 2 gene.
findings: []
reference_review:
relevance: HIGH
correctness: VERIFIED
review_notes: PubMed-verified case report of an AME kindred with an R374X truncating
mutation showing severely attenuated NAD-dependent 11beta-HSD activity; directly
supports the enzyme's NAD+-dependent 11beta-HSD activity and its role in cortisol
metabolism and mineralocorticoid receptor specificity.
- id: Reactome:R-HSA-194023
title: HSD11B2,HSD11B1 dimer oxidise CORT to COR
findings: []
- id: Reactome:R-HSA-9759259
title: HSD11B2 dehydrogenates PREDL to PREDN
findings: []
- id: file:human/HSD11B2/HSD11B2-uniprot.txt
title: UniProtKB entry P80365 (DHI2_HUMAN), 11-beta-hydroxysteroid dehydrogenase
type 2
findings: []