PABPN1
外观
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PABPN1(PABP-2)全名为多聚腺苷酸结合核蛋白1(polyadenylate-binding nuclear protein 1),在人类基因组中由14号染色体编码,是一种多聚腺苷酸结合蛋白(PABP)[6][7]。此蛋白位于细胞核中,其N端有一卷曲螺旋结构域,中间为RNA识别基序(RRM),C端则有核定位序列[8]。在mRNA转录结束后即参与多腺苷酸化的反应,以N端与多聚腺苷酸聚合酶(PAP)结合,并以RRM与刚生成的多腺苷酸尾结合以促进多腺苷酸化进行[8],且可抑制细胞在较靠近终止密码子的多腺苷酸化讯号(PAS)以CPSF切割mRNA并加上多腺苷酸尾,促使其使用距离较远的多腺苷酸化讯号,因而形成较长的3'非转译区(3'UTR)[9]。
遗传疾病眼咽型肌营养不良(OPMD)即为PABPN1基因突变,使其N端多出了数个丙氨酸重复所致[10]。
参考文献
[编辑]- ^ 與PABPN1相關的疾病;在維基數據上查看/編輯參考.
- ^ 2.0 2.1 2.2 GRCh38: Ensembl release 89: ENSG00000100836 - Ensembl, May 2017
- ^ 3.0 3.1 3.2 GRCm38: Ensembl release 89: ENSMUSG00000022194 - Ensembl, May 2017
- ^ Human PubMed Reference:. National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ Mouse PubMed Reference:. National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ Brais B, Xie YG, Sanson M, Morgan K, Weissenbach J, Korczyn AD, Blumen SC, Fardeau M, Tomé FM, Bouchard JP. The oculopharyngeal muscular dystrophy locus maps to the region of the cardiac alpha and beta myosin heavy chain genes on chromosome 14q11.2-q13. Hum Mol Genet. Aug 1995, 4 (3): 429–34. PMID 7795598. doi:10.1093/hmg/4.3.429.
- ^ Entrez Gene: PABPN1 poly(A) binding protein, nuclear 1. [2021-05-03]. (原始内容存档于2010-03-06).
- ^ 8.0 8.1 Banerjee A, Apponi LH, Pavlath GK, Corbett AH. PABPN1: molecular function and muscle disease.. FEBS J. 2013, 280 (17): 4230–50. PMC 3786098
. PMID 23601051. doi:10.1111/febs.12294.
- ^ Jenal M, Elkon R, Loayza-Puch F, van Haaften G, Kühn U, Menzies FM; et al. The poly(A)-binding protein nuclear 1 suppresses alternative cleavage and polyadenylation sites.. Cell. 2012, 149 (3): 538–53. PMID 22502866. doi:10.1016/j.cell.2012.03.022.
- ^ Riaz M, Raz Y, van Putten M, Paniagua-Soriano G, Krom YD, Florea BI; et al. PABPN1-Dependent mRNA Processing Induces Muscle Wasting.. PLoS Genet. 2016, 12 (5): e1006031. PMC 4859507
. PMID 27152426. doi:10.1371/journal.pgen.1006031.
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