SNRPA1 small nuclear ribonucleoprotein polypeptide A' [Homo sapiens (human)] - Gene

Summary

Official Symbol: SNRPA1provided by HGNC
Official Full Name: small nuclear ribonucleoprotein polypeptide A'provided by HGNC
Primary source: HGNC:HGNC:11152
See related: Ensembl:ENSG00000131876 MIM:603521; AllianceGenome:HGNC:11152
Gene type: protein coding
RefSeq status: VALIDATED
Organism: Homo sapiens
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as: Lea1; U2A'
Summary: Enables RNA binding activity. Involved in mRNA splicing, via spliceosome and spermatogenesis. Located in nuclear speck. Part of U2-type catalytic step 2 spliceosome and U2-type precatalytic spliceosome. Implicated in connective tissue disease. [provided by Alliance of Genome Resources, Dec 2024]
Expression: Ubiquitous expression in bone marrow (RPKM 26.0), testis (RPKM 22.8) and 25 other tissues See more
Orthologs: mouse all
NEW: Try the new Gene table
Try the new Transcript table

Genomic context

Location:: 15q26.3

Exon count:: 9

Annotation release	Status	Assembly	Chr	Location
RS_2024_08	current	GRCh38.p14 (GCF_000001405.40)	15	NC_000015.10 (101281510..101295248, complement)
RS_2024_08	current	T2T-CHM13v2.0 (GCF_009914755.1)	15	NC_060939.1 (99036543..99050299, complement)
RS_2024_09	previous assembly	GRCh37.p13 (GCF_000001405.25)	15	NC_000015.9 (101821715..101835453, complement)

Chromosome 15 - NC_000015.10 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

Go to the top of the page Help

Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

Go to the top of the page Help

GeneRIFs: Gene References Into Functions

What's a GeneRIF?

High SNRPA1 expression leads to poor prognosis in patients with lung adenocarcinoma.
Title: High SNRPA1 expression leads to poor prognosis in patients with lung adenocarcinoma.
Splicing factor SNRPA associated with microvascular invasion promotes hepatocellular carcinoma metastasis through activating NOTCH1/Snail pathway and is mediated by circSEC62/miR-625-5p axis.
Title: Splicing factor SNRPA associated with microvascular invasion promotes hepatocellular carcinoma metastasis through activating NOTCH1/Snail pathway and is mediated by circSEC62/miR-625-5p axis.
A prometastatic splicing program regulated by SNRPA1 interactions with structured RNA elements.
Title: A prometastatic splicing program regulated by SNRPA1 interactions with structured RNA elements.
Identification of RNA-binding protein SNRPA1 for prognosis in prostate cancer.
Title: Identification of RNA-binding protein SNRPA1 for prognosis in prostate cancer.
mTOR up-regulation of SNRPA1 contributes to hepatocellular carcinoma development.
Title: mTOR up-regulation of SNRPA1 contributes to hepatocellular carcinoma development.
These novel findings identified new roles played by SNRPA1 in the progression of colorectal cancer.
Title: An oncogenic gene, SNRPA1, regulates PIK3R1, VEGFC, MKI67, CDK1 and other genes in colorectal cancer.
Data suggest that SNRPA1, SNRPD1, and PNN are key players in the regulation of pluripotency-specific spliceosome assembly and the acquisition and maintenance of pluripotency.
Title: The unique spliceosome signature of human pluripotent stem cells is mediated by SNRPA1, SNRPD1, and PNN.
Data suggest that protein-protein interactions localize U2A' (SNRPA1) to the U2 snRNP (U2 small nuclear ribonucleoprotein) and exclude it from the U1 snRNP, rather than to enhance U2 snRNA (U2 small nuclear RNA; RNU2-1) binding of U2B'' (SNRPB2).
Title: Binding affinity and cooperativity control U2B″/snRNA/U2A' RNP formation.
PMID:10811961 pertains mostly to salmon, but has some reference to human.
Title: Gene Structure of the U2 snRNP-Specific A' Protein Gene from Salmo salar: Alternative Transcripts Observed.

Submit: New GeneRIF Correction

Phenotypes

Go to the top of the page Help

Find tests for this gene in the NIH Genetic Testing Registry (GTR)

Review eQTL and phenotype association data in this region using PheGenI

EBI GWAS Catalog

Description
Common variants in left/right asymmetry genes and pathways are associated with relative hand skill. EBI GWAS Catalog EBI GWAS CatalogPubMed

Variation

Go to the top of the page Help

See variants in ClinVar

See studies and variants in dbVar

See Variation Viewer (GRCh37.p13)

See Variation Viewer (GRCh38)

HIV-1 interactions

Go to the top of the page Help

Replication interactions

Interaction	Pubs
Knockdown of small nuclear ribonucleoprotein polypeptide A' (SNRPA1) by siRNA inhibits the early stages of HIV-1 replication in 293T cells infected with VSV-G pseudotyped HIV-1	PubMed

Protein interactions

Protein	Gene	Interaction	Pubs
Rev	rev	Rev inhibits the binding of U2 small nuclear ribonucleoprotein within the spliceosome	PubMed
Tat	tat	Small nuclear ribonucleoprotein polypeptide A' (SNRPA1) is identified to interact with HIV-1 Tat mutant Nullbasic in HeLa cells by LC MS/MS	PubMed
	tat	U2 snRNPs interact with the HIV-1 Tat cofactor TAT-SF1 and stimulate transcription from the HIV-1 LTR promoter	PubMed

Go to the HIV-1, Human Interaction Database

Interactions

Go to the top of the page Help

Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

Go to the top of the page Help

Markers

Snrpa1 (e-PCR), detects polymorphism
- UniSTS:479275

SHGC-79848 (e-PCR)
- UniSTS:101424

D8S2279 (e-PCR)
- UniSTS:473907

L18426 (e-PCR)
- UniSTS:34648

D15S910 (e-PCR)
- UniSTS:70496

STS-AA011337 (e-PCR)
- UniSTS:47272

RH118954 (e-PCR)
- UniSTS:138239

Gene Ontology Provided by GOA

Function	Evidence Code	Pubs
enables RNA binding	HDA more info	PubMed
enables U2 snRNA binding	IBA Inferred from Biological aspect of Ancestor more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed

Process	Evidence Code	Pubs
involved_in RNA splicing	TAS Traceable Author Statement more info	PubMed
involved_in U2-type prespliceosome assembly	NAS Non-traceable Author Statement more info	PubMed
involved_in mRNA splicing, via spliceosome	IBA Inferred from Biological aspect of Ancestor more info
involved_in mRNA splicing, via spliceosome	IC Inferred by Curator more info	PubMed
involved_in mRNA splicing, via spliceosome	IDA Inferred from Direct Assay more info	PubMed
involved_in mRNA splicing, via spliceosome	NAS Non-traceable Author Statement more info	PubMed
involved_in spermatogenesis	IGI Inferred from Genetic Interaction more info	PubMed

Component	Evidence Code	Pubs
part_of U2 snRNP	IBA Inferred from Biological aspect of Ancestor more info
part_of U2 snRNP	NAS Non-traceable Author Statement more info	PubMed
part_of U2-type catalytic step 2 spliceosome	IDA Inferred from Direct Assay more info	PubMed
part_of U2-type precatalytic spliceosome	IDA Inferred from Direct Assay more info	PubMed
part_of U2-type spliceosomal complex	IDA Inferred from Direct Assay more info	PubMed
part_of catalytic step 2 spliceosome	IDA Inferred from Direct Assay more info	PubMed
located_in nuclear body	IDA Inferred from Direct Assay more info
located_in nuclear speck	IDA Inferred from Direct Assay more info
located_in nucleoplasm	IDA Inferred from Direct Assay more info
located_in nucleoplasm	TAS Traceable Author Statement more info
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	NAS Non-traceable Author Statement more info	PubMed
part_of small nuclear ribonucleoprotein complex	TAS Traceable Author Statement more info	PubMed
part_of spliceosomal complex	IDA Inferred from Direct Assay more info	PubMed
part_of spliceosomal complex	NAS Non-traceable Author Statement more info	PubMed

General protein information

Go to the top of the page Help

Preferred Names: U2 small nuclear ribonucleoprotein A'

Names: U2 small nuclear ribonucleoprotein polypeptide A'; U2 snRNP A'

NCBI Reference Sequences (RefSeq)

Go to the top of the page Help

NEW Try the new Transcript table

RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.