3q6s

<StructureSection load='3q6s' size='340' side='right' caption='[[3q6s]], [[Resolution|resolution]] 1.93&Aring;' scene=''>

<table><tr><td colspan='2'>[[3q6s]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3Q6S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3Q6S FirstGlance]. <br>

</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CBX1, CBX ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3q6s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3q6s OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3q6s RCSB], [http://www.ebi.ac.uk/pdbsum/3q6s PDBsum]</span></td></tr>

== Publication Abstract from PubMed ==

Human Shugoshin 1 (Sgo1) protects centromeric sister-chromatid cohesion during prophase and prevents premature sister-chromatid separation. Heterochromatin protein 1 (HP1) has been proposed to protect centromeric sister-chromatid cohesion by directly targeting Sgo1 to centromeres in mitosis. Here we show that HP1alpha is targeted to mitotic centromeres by INCENP, a subunit of the chromosome passenger complex (CPC). Biochemical and structural studies show that both HP1-INCENP and HP1-Sgo1 interactions require the binding of the HP1 chromo shadow domain to PXVXL/I motifs in INCENP or Sgo1, suggesting that the INCENP-bound, centromeric HP1alpha is incapable of recruiting Sgo1. Consistently, a Sgo1 mutant deficient in HP1 binding is functional in centromeric cohesion protection and localizes normally to centromeres in mitosis. By contrast, INCENP or Sgo1 mutants deficient in HP1 binding fail to localize to centromeres in interphase. Therefore, our results suggest that HP1 binding by INCENP or Sgo1 is dispensable for centromeric cohesion protection during mitosis of human cells, but might regulate yet uncharacterized interphase functions of CPC or Sgo1 at the centromeres.

 

Mitotic centromeric targeting of HP1 and its binding to Sgo1 are dispensable for sister-chromatid cohesion in human cells.,Kang J, Chaudhary J, Dong H, Kim S, Brautigam CA, Yu H Mol Biol Cell. 2011 Apr 15;22(8):1181-90. doi: 10.1091/mbc.E11-01-0009. Epub 2011, Feb 23. PMID:21346195<ref>PMID:21346195</ref>

 

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

[[Category: Brautigam, C A]]

[[Category: Chaudhary, J]]

[[Category: Yu, H]]

[[Category: Cell cycle]]

[[Category: Incenp]]