3uen

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Template:STRUCTURE 3uen

Contents

Crystal structure of TopBP1 BRCT4/5 domains

Template:ABSTRACT PUBMED 23891287

Function

[TOPB1_HUMAN] Required for DNA replication. Plays a role in the rescue of stalled replication forks and checkpoint control. Binds double-stranded DNA breaks and nicks as well as single-stranded DNA. Recruits the SWI/SNF chromatin remodeling complex to E2F1-responsive promoters. Down-regulates E2F1 activity and inhibits E2F1-dependent apoptosis during G1/S transition and after DNA damage. Induces a large increase in the kinase activity of ATR.[1] [2] [3] [4] [5] [6]

About this Structure

3uen is a 1 chain structure with sequence from Human. Full crystallographic information is available from OCA.

See Also

Reference

  • Leung CC, Sun L, Gong Z, Burkat M, Edwards R, Assmus M, Chen J, Glover JN. Structural insights into recognition of MDC1 by TopBP1 in DNA replication checkpoint control. Structure. 2013 Aug 6;21(8):1450-9. doi: 10.1016/j.str.2013.06.015. Epub 2013 Jul, 25. PMID:23891287 doi:http://dx.doi.org/10.1016/j.str.2013.06.015
  1. ↑ Yamane K, Tsuruo T. Conserved BRCT regions of TopBP1 and of the tumor suppressor BRCA1 bind strand breaks and termini of DNA. Oncogene. 1999 Sep 16;18(37):5194-203. PMID:10498869 doi:10.1038/sj.onc.1202922
  2. ↑ Makiniemi M, Hillukkala T, Tuusa J, Reini K, Vaara M, Huang D, Pospiech H, Majuri I, Westerling T, Makela TP, Syvaoja JE. BRCT domain-containing protein TopBP1 functions in DNA replication and damage response. J Biol Chem. 2001 Aug 10;276(32):30399-406. Epub 2001 Jun 6. PMID:11395493 doi:10.1074/jbc.M102245200
  3. ↑ Honda Y, Tojo M, Matsuzaki K, Anan T, Matsumoto M, Ando M, Saya H, Nakao M. Cooperation of HECT-domain ubiquitin ligase hHYD and DNA topoisomerase II-binding protein for DNA damage response. J Biol Chem. 2002 Feb 1;277(5):3599-605. Epub 2001 Nov 19. PMID:11714696 doi:10.1074/jbc.M104347200
  4. ↑ Liu K, Lin FT, Ruppert JM, Lin WC. Regulation of E2F1 by BRCT domain-containing protein TopBP1. Mol Cell Biol. 2003 May;23(9):3287-304. PMID:12697828
  5. ↑ Liu K, Luo Y, Lin FT, Lin WC. TopBP1 recruits Brg1/Brm to repress E2F1-induced apoptosis, a novel pRb-independent and E2F1-specific control for cell survival. Genes Dev. 2004 Mar 15;18(6):673-86. PMID:15075294 doi:10.1101/gad.1180204
  6. ↑ Kumagai A, Lee J, Yoo HY, Dunphy WG. TopBP1 activates the ATR-ATRIP complex. Cell. 2006 Mar 10;124(5):943-55. PMID:16530042 doi:10.1016/j.cell.2005.12.041

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