Heterogeneous nuclear ribonucleoprotein D0 (HNRNPD) also known as AU-rich element RNA-binding protein 1 (AUF1) is a protein that in humans is encoded by the HNRNPDgene.[1][2] Alternative splicing of this gene results in four transcript variants.
This gene belongs to the subfamily of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs). The hnRNPs are nucleic acid binding proteins and they complex with heterogeneous nuclear RNA (hnRNA). The interaction sites on the RNA are frequently biased towards particular sequence motifs.[3] 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. The protein encoded by this gene has two repeats of quasi-RRM domains that bind to RNAs. It localizes to both the nucleus and the cytoplasm. This protein is implicated in the regulation of mRNA stability.[2]
Interactions
HNRPD has been shown to interact with SAFB[4] and Hsp27.[5] AUF1 also has been reported to interact with mRNAs such as Mef2c mRNA.[6]
References
↑Dempsey LA, Li MJ, DePace A, Bray-Ward P, Maizels N (August 1998). "The human HNRPD locus maps to 4q21 and encodes a highly conserved protein". Genomics. 49 (3): 378–384. doi:10.1006/geno.1998.5237. PMID9615222.
↑Arao Y, Kuriyama R, Kayama F, Kato S (August 2000). "A nuclear matrix-associated factor, SAF-B, interacts with specific isoforms of AUF1/hnRNP D". Arch. Biochem. Biophys. 380 (2): 228–36. doi:10.1006/abbi.2000.1938. PMID10933876.
Kajita Y, Nakayama J, Aizawa M, Ishikawa F (1995). "The UUAG-specific RNA binding protein, heterogeneous nuclear ribonucleoprotein D0. Common modular structure and binding properties of the 2xRBD-Gly family". J. Biol. Chem. 270 (38): 22167–75. doi:10.1074/jbc.270.38.22167. PMID7673195.
Wagner BJ, Long L, Rao PN, Pettenati MJ, Brewer G (June 1996). "Localization and physical mapping of genes encoding the A+U-rich element RNA-binding protein AUF1 to human chromosomes 4 and X". Genomics. 34 (2): 219–22. doi:10.1006/geno.1996.0269. PMID8661052.
Wagner BJ, DeMaria CT, Sun Y, Wilson GM, Brewer G (March 1998). "Structure and genomic organization of the human AUF1 gene: alternative pre-mRNA splicing generates four protein isoforms". Genomics. 48 (2): 195–202. doi:10.1006/geno.1997.5142. PMID9521873.
Nagata T, Kurihara Y, Matsuda G, Saeki J, Kohno T, Yanagida Y, Ishikawa F, Uesugi S, Katahira M (March 1999). "Structure and interactions with RNA of the N-terminal UUAG-specific RNA-binding domain of hnRNP D0". J. Mol. Biol. 287 (2): 221–37. doi:10.1006/jmbi.1999.2616. PMID10080887.
Blaxall BC, Dwyer-Nield LD, Bauer AK, Bohlmeyer TJ, Malkinson AM, Port JD (June 2000). "Differential expression and localization of the mRNA binding proteins, AU-rich element mRNA binding protein (AUF1) and Hu antigen R (HuR), in neoplastic lung tissue". Mol. Carcinog. 28 (2): 76–83. doi:10.1002/1098-2744(200006)28:2<76::AID-MC3>3.0.CO;2-0. PMID10900464.
Moraes KC, Quaresma AJ, Maehnss K, Kobarg J (January 2003). "Identification and characterization of proteins that selectively interact with isoforms of the mRNA binding protein AUF1 (hnRNP D)". Biol. Chem. 384 (1): 25–37. doi:10.1515/BC.2003.004. PMID12674497.
Arao Y, Kuriyama R, Kayama F, Kato S (2000). "A nuclear matrix-associated factor, SAF-B, interacts with specific isoforms of AUF1/hnRNP D". Arch. Biochem. Biophys. 380 (2): 228–236. doi:10.1006/abbi.2000.1938. PMID10933876.
Grosset C, Chen CY, Xu N, Sonenberg N, Jacquemin-Sablon H, Shyu AB (September 2000). "A mechanism for translationally coupled mRNA turnover: interaction between the poly(A) tail and a c-fos RNA coding determinant via a protein complex". Cell. 103 (1): 29–40. doi:10.1016/S0092-8674(00)00102-1. PMID11051545.
Katahira M, Miyanoiri Y, Enokizono Y, Matsuda G, Nagata T, Ishikawa F, Uesugi S (August 2001). "Structure of the C-terminal RNA-binding domain of hnRNP D0 (AUF1), its interactions with RNA and DNA, and change in backbone dynamics upon complex formation with DNA". J. Mol. Biol. 311 (5): 973–88. doi:10.1006/jmbi.2001.4862. PMID11531333.
Lapucci A, Donnini M, Papucci L, Witort E, Tempestini A, Bevilacqua A, Nicolin A, Brewer G, Schiavone N, Capaccioli S (May 2002). "AUF1 Is a bcl-2 A + U-rich element-binding protein involved in bcl-2 mRNA destabilization during apoptosis". J. Biol. Chem. 277 (18): 16139–46. doi:10.1074/jbc.M201377200. PMID11856759.
Pioli PA, Hamilton BJ, Connolly JE, Brewer G, Rigby WF (September 2002). "Lactate dehydrogenase is an AU-rich element-binding protein that directly interacts with AUF1". J. Biol. Chem. 277 (38): 35738–45. doi:10.1074/jbc.M204002200. PMID12107167.
Shchors K, Yehiely F, Kular RK, Kotlo KU, Brewer G, Deiss LP (December 2002). "Cell death inhibiting RNA (CDIR) derived from a 3'-untranslated region binds AUF1 and heat shock protein 27". J. Biol. Chem. 277 (49): 47061–72. doi:10.1074/jbc.M202272200. PMID12356764.