HnRNP A1 belongs to the A/B subfamily of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs). The hnRNPs are RNA binding proteins and they complex with heterogeneous nuclear RNA (hnRNA). These proteins are associated with pre mRNAs in the nucleus and appear to influence pre mRNA processing and other aspects of mRNA metabolism and transport. While all of the hnRNPs are present in the nucleus, some seem to shuttle between the nucleus and the cytoplasm. The hnRNP proteins have distinct nucleic acid binding properties. hnRNP A1 has two repeats of quasi RRM domains that bind to RNAs. It is one of the most abundant core proteins of hnRNP complexes and it is localized to the nucleoplasm. This protein, along with other hnRNP proteins, is exported from the nucleus, probably bound to mRNA, and is immediately re imported.
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Protein Aliases: HDP; HDP-1; Helix-destabilizing protein; Heterogeneous nuclear ribonucleoprotein A1; Heterogeneous nuclear ribonucleoprotein A1, N-terminally processed; heterogeneous nuclear ribonucleoprotein A1B protein; heterogeneous nuclear ribonucleoprotein B2 protein; heterogeneous nuclear ribonucleoprotein core protein A1; hnRNP A1; hnRNP A1-like 3; hnRNP core protein A1; hnRNP core protein A1-like 3; HNRNP-I; HNRNPI; HNRPA1MGC102835; HNRPI; MGC102835; nuclear ribonucleoprotein particle A1 protein; pPTB; PTB-1; PTB-T; PTB2; PTB3; PTB4; putative heterogeneous nuclear ribonucleoprotein A1-like 3; RP11-78J21.1; single-strand DNA-binding protein UP1; Single-strand RNA-binding protein; Single-strand-binding protein; Topoisomerase-inhibitor suppressed
Gene Aliases: ALS19; ALS20; Fli-2; Hdp; HDP-1; hnRNP A1; hnRNP-A1; HNRNPA1; HNRPA1; HNRPA1L3; IBMPFD3; Tis; UP 1