InnateDB: Systems Biology of the Innate Immune Response

Mus musculus Protein: Sip1

Summary

InnateDB Protein

IDBP-141804.6

Last Modified

2014-10-13 [Report errors or provide feedback]

Gene Symbol

Sip1

Protein Name

survival of motor neuron protein interacting protein 1

Synonyms

1700012N19Rik; Sip1;

Species

Mus musculus

Ensembl Protein

ENSMUSP00000021379

InnateDB Gene

IDBG-141802 (Sip1)

Protein Structure

UniProt Annotation

Function

The SMN complex plays a catalyst role in the assembly of small nuclear ribonucleoproteins (snRNPs), the building blocks of the spliceosome. Thereby, plays an important role in the splicing of cellular pre-mRNAs. Most spliceosomal snRNPs contain a common set of Sm proteins SNRPB, SNRPD1, SNRPD2, SNRPD3, SNRPE, SNRPF and SNRPG that assemble in a heptameric protein ring on the Sm site of the small nuclear RNA to form the core snRNP. In the cytosol, the Sm proteins SNRPD1, SNRPD2, SNRPE, SNRPF and SNRPG are trapped in an inactive 6S pICln-Sm complex by the chaperone CLNS1A that controls the assembly of the core snRNP. Dissociation by the SMN complex of CLNS1A from the trapped Sm proteins and their transfer to an SMN-Sm complex triggers the assembly of core snRNPs and their transport to the nucleus (By similarity). {ECO:0000250}.

Subcellular Localization

Nucleus, gem {ECO:0000250}. Cytoplasm {ECO:0000250}. Note=Localized in subnuclear structures next to coiled bodies, called gems, which are highly enriched in spliceosomal snRNPs. Also found in the cytoplasm (By similarity). {ECO:0000250}.

Disease Associations

Tissue Specificity

Comments

Interactions

Number of Interactions

This gene and/or its encoded proteins are associated with 5 experimentally validated interaction(s) in this database.
They are also associated with 22 interaction(s) predicted by orthology.

Experimentally validated
Total	5 [view]
Protein-Protein	5 [view]
Protein-DNA	0
Protein-RNA	0
DNA-DNA	0
RNA-RNA	0
DNA-RNA	0

Predicted by orthology
Total	22 [view]

Gene Ontology

Molecular Function

Accession	GO Term
GO:0005515	protein binding

Biological Process

GO:0000245	spliceosomal complex assembly
GO:0000387	spliceosomal snRNP assembly

Cellular Component

GO:0005622	intracellular
GO:0005634	nucleus
GO:0005681	spliceosomal complex
GO:0005730	nucleolus
GO:0005737	cytoplasm
GO:0005829	cytosol
GO:0032797	SMN complex
GO:0034719	SMN-Sm protein complex
GO:0097504	Gemini of coiled bodies