U1 small nuclear ribonucleoprotein component PRP42
UniProtKB accession: Q03776
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Go to UniProtKB: Q03776
UniProtKB description: Essential component of the U1 snRNP particle, which recognizes and binds the 5'-splice site of pre-mRNA. Together with other non-snRNP factors, U1 snRNP forms the spliceosomal commitment complex, that targets pre-mRNA to the splicing pathway. U1 snRNP is cotranscriptionally recruited to intron-containing genes. Required for U1 snRNP biogenesis.
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