UNIPROT #

P09651

PROTEIN NAME

hnRNP A1

SYNONYMS

HNRNPA 1 antibody; Helix destabilizing protein antibody; Helix-destabilizing protein antibody; Heterogeneous nuclear ribonucleoprotein A1 antibody; Heterogeneous nuclear ribonucleoprotein A1B protein antibody; Heterogeneous nuclear ribonucleoprotein B2 protein antibody; Heterogeneous nuclear ribonucleoprotein core protein A1 antibody; hnRNP A1 antibody; hnRNP core protein A1 antibody; HNRNPA1 antibody; HNRPA1 antibody; MGC102835 antibody; Nuclear ribonucleoprotein particle A1 protein antibody; ROA1_HUMAN antibody; Single strand DNA binding protein UP1 antibody; Single strand RNA binding protein antibody; Single-strand RNA-binding protein antibody

POST-TRANSLATIONAL MODIFICATION

Arg-194, Arg-206 and Arg-225 are dimethylated, probably to asymmetric dimethylarginine.; Sumoylated.

SUBCELLULAR LOCATION

Nucleus. Cytoplasm.

FUNCTION

Heterogeneous nuclear ribonucleoproteins (hnRNPs) constitute a set of poly-peptides that contribute to mRNA transcription and pre-mRNA processing as well as mature mRNA transport to the cytoplasm and translation. They also bind heterogeneous nuclear RNA (hnRNA), which are the transcripts produced by RNA polymerase II. There are approximately 20 known hnRNP proteins, and their complexes are the major constituents of the spliceosome. The majority of hnRNP protein components are localized to the nucleus; however some shuttle between the nucleus and the cytoplasm. The A/B subfamily of hnRNPs include A1, A2/B1, A3 and A0, and in Xenopus, hnRNP A1, A2 and A3 are ubiquitously expressed throughout development as well as in adult tissues. hnRNP A1 and A2/B1 regulate the processing of pre-mRNA by directly antagonizing the association of various splicing factors and by influencing the splice site selection on pre-mRNA. The hnRNP A0 gene is distinct from the other A/B family members, and it encodes a low-abundance protein, which is implicated in mRNA stability.