nip7

UniProt ID: Q1MTQ9
Organism: Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Review Status: COMPLETE
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Gene Description

Nip7 is an RNA-binding ribosome-biogenesis factor with pre-PUA and PUA domains. It associates with nascent 60S ribosomal subunits in the nucleolus and supports assembly of the large-subunit preribosome. The fission-yeast protein is present in structurally characterized early pre-60S particles; it is an assembly factor rather than a constitutive structural protein of the mature ribosome.

Existing Annotations Review

GO Term Evidence Action Reason
GO:0003723 RNA binding
IEA
GO_REF:0000002
ACCEPT
Summary: Nip7 is an RNA-binding pre-60S assembly factor.
Reason: The conserved PUA RNA-binding architecture and direct presence of Q1MTQ9 in an early pre-60S particle support RNA binding in assembly. This is not an inference of kinase regulation from the broad mixed PANTHER family.
Supporting Evidence:
file:SCHPO/nip7/nip7-8ESQ-entities.json
"pdbx_description": "60S ribosome subunit biogenesis protein nip7"
file:SCHPO/nip7/nip7-uniprot.txt
DR InterPro; IPR002478; PUA.
GO:0003723 RNA binding
NAS
GO_REF:0000051
ACCEPT
Summary: Nip7 is an RNA-binding pre-60S assembly factor.
Reason: The conserved PUA RNA-binding architecture and direct presence of Q1MTQ9 in an early pre-60S particle support RNA binding in assembly. This is not an inference of kinase regulation from the broad mixed PANTHER family.
Supporting Evidence:
file:SCHPO/nip7/nip7-8ESQ-entities.json
"pdbx_description": "60S ribosome subunit biogenesis protein nip7"
file:SCHPO/nip7/nip7-uniprot.txt
DR InterPro; IPR002478; PUA.
GO:0005634 nucleus
HDA
PMID:16823372
ORFeome cloning and global analysis of protein localization ...
MODIFY
Summary: The core nuclear localization is the nucleolus.
Reason: The target nucleolar HDA annotation and early pre-60S complex establish a more specific site of action than nucleus.
Proposed replacements: nucleolus
Supporting Evidence:
file:SCHPO/nip7/nip7-uniprot.txt
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:16823372}. Nucleus, CC nucleolus {ECO:0000269|PubMed:16823372}.
GO:0005634 nucleus
IEA
GO_REF:0000002
MODIFY
Summary: The core nuclear localization is the nucleolus.
Reason: The target nucleolar HDA annotation and early pre-60S complex establish a more specific site of action than nucleus.
Proposed replacements: nucleolus
Supporting Evidence:
file:SCHPO/nip7/nip7-uniprot.txt
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:16823372}. Nucleus, CC nucleolus {ECO:0000269|PubMed:16823372}.
GO:0005730 nucleolus
HDA
PMID:16823372
ORFeome cloning and global analysis of protein localization ...
ACCEPT
Summary: Nip7 functions in nucleolar pre-60S assembly.
Reason: The target localization annotation and the primary pre-60S structural study are concordant. The cached localization atlas lacks full text, so the target imaging assignment is accepted as curated rather than independently re-read.
Supporting Evidence:
file:SCHPO/nip7/nip7-uniprot.txt
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:16823372}. Nucleus, CC nucleolus {ECO:0000269|PubMed:16823372}.
GO:0005730 nucleolus
IBA
GO_REF:0000033
ACCEPT
Summary: Nip7 functions in nucleolar pre-60S assembly.
Reason: The target localization annotation and the primary pre-60S structural study are concordant. The cached localization atlas lacks full text, so the target imaging assignment is accepted as curated rather than independently re-read.
Supporting Evidence:
file:SCHPO/nip7/nip7-uniprot.txt
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:16823372}. Nucleus, CC nucleolus {ECO:0000269|PubMed:16823372}.
GO:0005730 nucleolus
IEA
GO_REF:0000044
ACCEPT
Summary: Nip7 functions in nucleolar pre-60S assembly.
Reason: The target localization annotation and the primary pre-60S structural study are concordant. The cached localization atlas lacks full text, so the target imaging assignment is accepted as curated rather than independently re-read.
Supporting Evidence:
file:SCHPO/nip7/nip7-uniprot.txt
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:16823372}. Nucleus, CC nucleolus {ECO:0000269|PubMed:16823372}.
GO:0005737 cytoplasm
IEA
GO_REF:0000044
KEEP AS NON CORE
Summary: A cytoplasmic/cytosolic pool is compatible with the target localization survey.
Reason: Retain the observation as non-core; the directly characterized role is nucleolar large-subunit assembly, and cytosolic detection alone does not establish a separate translation function.
Supporting Evidence:
file:SCHPO/nip7/nip7-uniprot.txt
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:16823372}. Nucleus, CC nucleolus {ECO:0000269|PubMed:16823372}.
GO:0005829 cytosol
HDA
PMID:16823372
ORFeome cloning and global analysis of protein localization ...
KEEP AS NON CORE
Summary: A cytoplasmic/cytosolic pool is compatible with the target localization survey.
Reason: Retain the observation as non-core; the directly characterized role is nucleolar large-subunit assembly, and cytosolic detection alone does not establish a separate translation function.
Supporting Evidence:
file:SCHPO/nip7/nip7-uniprot.txt
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000269|PubMed:16823372}. Nucleus, CC nucleolus {ECO:0000269|PubMed:16823372}.
GO:0030684 preribosome
IDA
PMID:36423630
Chromatin localization of nucleophosmin organizes ribosome b...
MODIFY
Summary: Nip7 occurs in an early large-subunit preribosome.
Reason: RCSB entry 8ESQ links author chain l to exact accession Q1MTQ9. Although the paper foregrounds nucleophosmin, its deposited particle includes Nip7; the more specific pre-60S complex is appropriate.
Supporting Evidence:
file:SCHPO/nip7/nip7-8ESQ-entities.json
"pdbx_description": "60S ribosome subunit biogenesis protein nip7"
GO:0030687 preribosome, large subunit precursor
IBA
GO_REF:0000033
ACCEPT
Summary: Nip7 is part of the large-subunit preribosome.
Reason: The exact target occurs in the deposited early pre-60S particle, independently supporting the ancestral PAINT inference.
Supporting Evidence:
file:SCHPO/nip7/nip7-8ESQ-entities.json
"pdbx_description": "60S ribosome subunit biogenesis protein nip7"
GO:0042255 ribosome assembly
IEA
GO_REF:0000002
MODIFY
Summary: Nip7 supports assembly of the large-subunit preribosome.
Reason: The direct structural context resolves broad ribosome assembly/biogenesis to the early large-subunit precursor step.
Supporting Evidence:
file:SCHPO/nip7/nip7-8ESQ-entities.json
"pdbx_description": "60S ribosome subunit biogenesis protein nip7"
GO:0042273 ribosomal large subunit biogenesis
IBA
GO_REF:0000033
MODIFY
Summary: Nip7 supports assembly of the large-subunit preribosome.
Reason: The direct structural context resolves broad ribosome assembly/biogenesis to the early large-subunit precursor step.
Supporting Evidence:
file:SCHPO/nip7/nip7-8ESQ-entities.json
"pdbx_description": "60S ribosome subunit biogenesis protein nip7"
GO:1902626 assembly of large subunit precursor of preribosome
EXP
PMID:36423630
Chromatin localization of nucleophosmin organizes ribosome b...
ACCEPT
Summary: Nip7 contributes to assembly of the large-subunit precursor.
Reason: The primary study isolates and structures fission-yeast pre-60S particles; exact Q1MTQ9 is a component in 8ESQ. This supports the role independently of ARBA.
Supporting Evidence:
file:SCHPO/nip7/nip7-8ESQ-entities.json
"pdbx_description": "60S ribosome subunit biogenesis protein nip7"
GO:1902626 assembly of large subunit precursor of preribosome
IEA
GO_REF:0000117
ACCEPT
Summary: Nip7 contributes to assembly of the large-subunit precursor.
Reason: The primary study isolates and structures fission-yeast pre-60S particles; exact Q1MTQ9 is a component in 8ESQ. This supports the role independently of ARBA.
Supporting Evidence:
file:SCHPO/nip7/nip7-8ESQ-entities.json
"pdbx_description": "60S ribosome subunit biogenesis protein nip7"

Core Functions

Binds RNA within early pre-60S particles during large-subunit assembly.

Supporting Evidence:
  • file:SCHPO/nip7/nip7-8ESQ-entities.json
    "pdbx_description": "60S ribosome subunit biogenesis protein nip7"

References

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Deep Research

Falcon

(nip7-deep-research-falcon.md)

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πŸ“š Additional Documentation

Notes

(nip7-notes.md)

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