GEMIN5

UniProt ID: A0A9L0R5P7
Organism: Equus caballus
Review Status: IN PROGRESS
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Gene Description

GEMIN5 is a conserved multidomain RNA-binding protein related to the mammalian snRNP-assembly and translation regulator. The selected horse model retains most of the protein but lacks a segment spanning the end of its N-terminal WD40 RNA-recognition module, leaving some RNA-binding and assembly functions uncertain. Cytoplasmic and nuclear localization are consistent with characterized GEMIN5 proteins.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0003730 mRNA 3'-UTR binding
IEA
GO_REF:0000117
UNDECIDED
Summary: The exact horse model has a deletion affecting the RNA-recognition region.
Reason: Human GEMIN5 binds the SMN 3β€²-UTR directly, but the selected horse sequence lacks human723–798 at the tandem-WD40 module boundary. ARBA does not resolve whether the modified module still supports the relevant RNA interaction. The gene-family function is well grounded; functionality of this selected model needs verification.
Supporting Evidence:
PMID:25911097
Gemin5 directly binds to the mature SMN 3β€²-UTR immediately upstream of the poly(A) tail.
file:HORSE/GEMIN5/GEMIN5-bioinformatics/RESULTS.md
The horse sequence lacks the aligned human segment 723–798.
file:HORSE/GEMIN5/GEMIN5-uniprot.txt
DR InterPro; IPR052640; Gemin-5.
GO:0005654 nucleoplasm
IEA
GO_REF:0000044
KEEP AS NON CORE
Summary: A nuclear gem-associated pool is plausible for the conserved GEMIN5 protein.
Reason: Human immunolocalization establishes this additional pool. The horse sequence retains the large GEMIN5 architecture and C-terminal interaction regions; the internal RNA-recognition deletion does not itself refute nuclear localization.
Supporting Evidence:
PMID:11714716
Immunolocalization studies demonstrate that Gemin5 is found in the cytoplasm and in the nucleus, where it colocalizes with SMN in gems.
file:HORSE/GEMIN5/GEMIN5-uniprot.txt
DR InterPro; IPR052640; Gemin-5.
file:HORSE/GEMIN5/GEMIN5-bioinformatics/RESULTS.md
share 89.2% identity among
GO:0005737 cytoplasm
IEA
GO_REF:0000044
ACCEPT
Summary: The conserved GEMIN5 protein is expected to occupy cytoplasmic pools.
Reason: The principal human localization and extensive sequence conservation support cytoplasmic residence, while specific RNA-binding activity requires separate evaluation of the internal deletion.
Supporting Evidence:
PMID:11714716
Immunolocalization studies demonstrate that Gemin5 is found in the cytoplasm and in the nucleus, where it colocalizes with SMN in gems.
file:HORSE/GEMIN5/GEMIN5-uniprot.txt
DR InterPro; IPR052640; Gemin-5.
file:HORSE/GEMIN5/GEMIN5-bioinformatics/RESULTS.md
share 89.2% identity among
GO:0097504 Gemini of Cajal bodies
IEA
GO_REF:0000044
KEEP AS NON CORE
Summary: A nuclear gem-associated pool is plausible for the conserved GEMIN5 protein.
Reason: Human immunolocalization establishes this additional pool. The horse sequence retains the large GEMIN5 architecture and C-terminal interaction regions; the internal RNA-recognition deletion does not itself refute nuclear localization.
Supporting Evidence:
PMID:11714716
Immunolocalization studies demonstrate that Gemin5 is found in the cytoplasm and in the nucleus, where it colocalizes with SMN in gems.
file:HORSE/GEMIN5/GEMIN5-uniprot.txt
DR InterPro; IPR052640; Gemin-5.
file:HORSE/GEMIN5/GEMIN5-bioinformatics/RESULTS.md
share 89.2% identity among

References

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External Prediction Reviews

These computational predictions are reviewed separately from the GOA annotation set used for this review. The assessments below are from this project and do not constitute official GO annotations or endorsement by GO/UniProt. They are not included in the existing annotation review above.

ProtNLM2 External predictions

View prediction review YAML Β· GEMIN5-protnlm-predictions-review.yaml Β· Review status: COMPLETE

The nuclear prediction is broad but supported. Four RNA-function predictions are uncertain for a horse model with a WD40-boundary deletion; protein-ubiquitination participation lacks a demonstrated mechanism.

Source documents: projects/PROTNLM_EVALUATION/mammal-benchmark/horse40-predictions.csv Β· projects/PROTNLM_EVALUATION/mammal-benchmark/predictions.jsonl.gz Β· projects/PROTNLM_EVALUATION/mammal-benchmark/paired-sequences/GEMIN5.json

Review score: 2 = concordant with evidence; 1 = uncertain; 0 = discordant with evidence. This is an assessment score, not a model probability.

GO:0000387 spliceosomal snRNP assembly GO_BP
UNC β€” Uncertain Review score: 1/2
Prediction method: ProtNLM2 Β· Version: UniProt API snapshot 2026-09-08
Review rationale: Human GEMIN5 studies establish snRNP assembly. The selected horse protein is a close GEMIN5 relative but lacks aligned human residues723–798, spanning the end of the tandem-WD40 RNA-recognition module and adjacent sequence. The intact gene-family role is supported; the deletion makes transfer of this specific functional claim to the selected model uncertain. The conserved C-terminal regions do not independently demonstrate that its RNA-recognition and assembly machinery remains functional.
Supporting Evidence:
GO:0016567 protein ubiquitination GO_BP
UNC β€” Uncertain Review score: 1/2
Prediction method: ProtNLM2 Β· Version: UniProt API snapshot 2026-09-08
Review rationale: The retrieved primary studies establish GEMIN5 RNA recognition, snRNP assembly and translation regulation. They do not establish a role executing or regulating protein ubiquitination. Being ubiquitinated, interacting with a ubiquitin-system protein, or changing proteostasis indirectly is insufficient for this process assignment. A direct mechanistic contribution to the ubiquitination process is needed; the absence of a catalytic ubiquitin-ligase domain alone would not refute noncatalytic participation.
Supporting Evidence:
  • PMID:27881600: "the WD40 domain of Gemin5 is both necessary and sufficient for binding the Sm site of pre-snRNAs"
  • PMID:25911097: "Gemin5 binding to the SMN 3β€²-UTR activates expression of SMN protein by increasing translation of the SMN mRNA."
  • file:HORSE/GEMIN5/GEMIN5-uniprot.txt: "DR InterPro; IPR052640; Gemin-5."
GO:0005634 nucleus GO_CC
LSP β€” Less precise than existing annotation Review score: 2/2
Prediction method: ProtNLM2 Β· Version: UniProt API snapshot 2026-09-08
Review rationale: Human imaging establishes a nuclear GEMIN5 pool, consistent with the conserved horse protein architecture. The frozen horse GOA already has the more specific nucleoplasm location, whose biological rationale is supported by the human imaging. The predicted nucleus term is therefore less specific; it does not imply GEMIN5 is primarily nuclear or prove that its altered RNA-binding module is functional.
Supporting Evidence:
GO:0000340 RNA 7-methylguanosine cap binding GO_MF
UNC β€” Uncertain Review score: 1/2
Prediction method: ProtNLM2 Β· Version: UniProt API snapshot 2026-09-08
Review rationale: Human GEMIN5 studies establish RNA cap binding. The selected horse protein is a close GEMIN5 relative but lacks aligned human residues723–798, spanning the end of the tandem-WD40 RNA-recognition module and adjacent sequence. The intact gene-family role is supported; the deletion makes transfer of this specific functional claim to the selected model uncertain. The conserved C-terminal regions do not independently demonstrate that its RNA-recognition and assembly machinery remains functional.
Supporting Evidence:
GO:0003730 mRNA 3'-UTR binding GO_MF
UNC β€” Uncertain Review score: 1/2
Prediction method: ProtNLM2 Β· Version: UniProt API snapshot 2026-09-08
Review rationale: Human GEMIN5 studies establish SMN mRNA 3β€²-UTR binding. The selected horse protein is a close GEMIN5 relative but lacks aligned human residues723–798, spanning the end of the tandem-WD40 RNA-recognition module and adjacent sequence. The intact gene-family role is supported; the deletion makes transfer of this specific functional claim to the selected model uncertain. The conserved C-terminal regions do not independently demonstrate that its RNA-recognition and assembly machinery remains functional.
Supporting Evidence:
GO:0006417 regulation of translation GO_BP
UNC β€” Uncertain Review score: 1/2
Prediction method: ProtNLM2 Β· Version: UniProt API snapshot 2026-09-08
Review rationale: Human GEMIN5 studies establish translation regulation. The selected horse protein is a close GEMIN5 relative but lacks aligned human residues723–798, spanning the end of the tandem-WD40 RNA-recognition module and adjacent sequence. The intact gene-family role is supported; the deletion makes transfer of this specific functional claim to the selected model uncertain. The conserved C-terminal regions do not independently demonstrate that its RNA-recognition and assembly machinery remains functional.
Supporting Evidence:

πŸ“š Additional Documentation

Notes

(GEMIN5-notes.md)

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Bioinformatics Results

(RESULTS.md)

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πŸ“„ View Raw YAML

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