snRNP 70 mediates the splicing of pre-mRNA by binding to the loop I region of U1-snRNA. Participates in pre-mRNA splicing and exonic splicing complexes. A major ribonucleoprotein antigen recognized by the sera from patients with autoimmune diseases, such as systemic lupus erythematosus. Four alternatively spliced human isoforms have been described. The truncated isoforms (2-4) cannot bind U1-snRNA. Note: This description may include information from UniProtKB.
Protein type: RNA splicing; RNA-binding; Spliceosome
Chromosomal Location of Human Ortholog: 19q13.33
Cellular Component:  nuclear speck; nucleoplasm; nucleus; spliceosomal complex; U1 snRNP
Molecular Function:  protein binding; RNA binding; U1 snRNA binding
Biological Process:  mRNA splicing, via spliceosome; negative regulation of chaperone-mediated autophagy; negative regulation of protein refolding; positive regulation of mRNA splicing, via spliceosome; regulation of ATPase activity; regulation of RNA splicing
Reference #:  P08621 (UniProtKB)
Alt. Names/Synonyms: RNPU1Z; RPU1; RU17; small nuclear ribonucleoprotein 70kDa (U1); Snp1; SNRNP70; SNRP70; U1 small nuclear ribonucleoprotein 70 kDa; U1 snRNP 70 kDa; U1-70K; U170K; U1AP; U1AP1; U1RNP
Gene Symbols: SNRNP70
Molecular weight: 51,557 Da
Basal Isoelectric point: 9.94  Predict pI for various phosphorylation states
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snRNP 70

Protein Structure Not Found.


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