內輸蛋白亞基α-2

內輸蛋白亞基α-2英語:)是人體內的一種蛋白質,為內輸蛋白α的一種,由17號染色體上的KPNA2基因編碼。[5][6]

內輸蛋白亞基α-2
已知的結構
PDB直系同源搜索: PDBe RCSB
識別號
别名KPNA2;, IPOA1, QIP2, RCH1, SRP1alpha, Karyopherin alpha 2, SRP1-alpha, karyopherin subunit alpha 2
外部IDOMIM600685 MGI103561 HomoloGene1708 GeneCardsKPNA2
基因位置(人类)
染色体染色体17(人类)[1]
基因座17q24.2起始68,035,708 bp[1]
终止68,046,854 bp[1]
直系同源
物種人類小鼠
Entrez

3838

16647

Ensembl

ENSG00000182481

ENSMUSG00000018362

UniProt

P52292

P52293

mRNA序列

NM_002266、NM_001320611

NM_010655

蛋白序列

NP_001307540、NP_002257

NP_034785

基因位置(UCSC)Chr 17: 68.04 – 68.05 MbChr 11: 106.99 – 107 Mb
PubMed查找[3][4]
維基數據

功能

內輸蛋白亞基α-2參與了蛋白質由細胞質轉運進細胞核的過程,細胞質中,內輸蛋白α可結合具有核定位序列的蛋白質[7],接著再與內輸蛋白β結合而形成二聚體,後者可與核孔複合物互動,使二聚體和蛋白質一起進入細胞核中。入核後,內輸蛋白二聚體與Ran-GTP結合而將原本結合的蛋白質釋出,再回到細胞質中。此過程與Ran循環偶連,並需消耗能量[8]

除了協助蛋白質進入細胞核外,KPNA2可能也參與V(D)J重組[9]

交互作用

核轉運蛋白α-2會與以下的蛋白質產生交互作用

  • ADP-核糖基化因子樣蛋白4A[10]
  • 白細胞介素-2誘導性T細胞激酶[11]
  • 內輸蛋白亞基b-1[12][13][14]
  • 鋅指蛋白PLAG1[15]
  • ATP依賴性DNA螺旋酶Q1[16]
  • 絲氨酸/蘇氨酸蛋白激酶[17]

參考文獻

  1. GRCh38: Ensembl release 89: ENSG00000182481 - Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000018362 - Ensembl, May 2017
  3. . National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. . National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Cuomo CA, Kirch SA, Gyuris J, Brent R, Oettinger MA. . Proceedings of the National Academy of Sciences of the United States of America. Jun 1994, 91 (13): 6156–60. PMC 44157. PMID 8016130. doi:10.1073/pnas.91.13.6156.
  6. Weis K, Mattaj IW, Lamond AI. . Science. May 1995, 268 (5213): 1049–53. PMID 7754385. doi:10.1126/science.7754385.
  7. Moroianu, J; Blobel, G; Radu, A. . Proceedings of the National Academy of Sciences of the United States of America. 1995-03-14, 92 (6): 2008–2011. ISSN 0027-8424. PMC 42412. PMID 7892216. doi:10.1073/pnas.92.6.2008.
  8. Goldfarb, David S.; Corbett, Anita H.; Mason, D. Adam; Harreman, Michelle T.; Adam, Stephen A. . Trends in Cell Biology. 2004, 14 (9): 505–514. PMID 15350979. doi:10.1016/j.tcb.2004.07.016.
  9. . (原始内容存档于2010-12-05).
  10. Lin CY, Huang PH, Liao WL, Cheng HJ, Huang CF, Kuo JC, Patton WA, Massenburg D, Moss J, Lee FJ. . The Journal of Biological Chemistry. Dec 2000, 275 (48): 37815–23. PMID 10980193. doi:10.1074/jbc.M002470200.
  11. Perez-Villar JJ, O'Day K, Hewgill DH, Nadler SG, Kanner SB. . International Immunology. Oct 2001, 13 (10): 1265–74. PMID 11581171. doi:10.1093/intimm/13.10.1265.
  12. Nagoshi E, Yoneda Y. . Molecular and Cellular Biology. Apr 2001, 21 (8): 2779–89. PMC 86908. PMID 11283257. doi:10.1128/MCB.21.8.2779-2789.2001.
  13. Köhler M, Speck C, Christiansen M, Bischoff FR, Prehn S, Haller H, Görlich D, Hartmann E. . Molecular and Cellular Biology. Nov 1999, 19 (11): 7782–91. PMC 84838. PMID 10523667. doi:10.1128/mcb.19.11.7782.
  14. Kutay U, Bischoff FR, Kostka S, Kraft R, Görlich D. . Cell. Sep 1997, 90 (6): 1061–71. PMID 9323134. doi:10.1016/s0092-8674(00)80372-4.
  15. Braem CV, Kas K, Meyen E, Debiec-Rychter M, Van De Ven WJ, Voz ML. . The Journal of Biological Chemistry. May 2002, 277 (22): 19673–8. PMID 11882654. doi:10.1074/jbc.M112112200.
  16. Seki T, Tada S, Katada T, Enomoto T. . Biochemical and Biophysical Research Communications. May 1997, 234 (1): 48–53. PMID 9168958. doi:10.1006/bbrc.1997.6535.
  17. Maiyar AC, Leong ML, Firestone GL. . Molecular Biology of the Cell. Mar 2003, 14 (3): 1221–39. PMC 151592. PMID 12631736. doi:10.1091/mbc.E02-03-0170.

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