1sw6

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{{STRUCTURE_1sw6| PDB=1sw6 | SCENE= }}
{{STRUCTURE_1sw6| PDB=1sw6 | SCENE= }}
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'''S. CEREVISIAE SWI6 ANKYRIN-REPEAT FRAGMENT'''
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===S. CEREVISIAE SWI6 ANKYRIN-REPEAT FRAGMENT===
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==Overview==
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Swi6 is a 92,000 Mr protein common to two distinct transcriptional activation complexes (SBF and MBF) that coordinate gene expression at the G1-S boundary of the yeast cell cycle. The X-ray structure of a central 36,000 Mr fragment has been determined and refined at 2.1 A resolution. The structure reveals a basic framework of five ankyrin repeat modules that is elaborated through a series of helical insertions distinguishing it from structures of other ankyrin repeat proteins. A second domain contains an approximately 30-residue region of extended structure that interacts with the ankyrin repeat core over a substantial proportion of its surface. Conservation of residues buried by these interactions indicates that all members of the Swi6/Cdc10 family share a similar architecture. Several temperature-sensitive mutations within Swi6 and Cdc10 appear to disrupt these interdomain contacts rather than destabilize the ankyrin repeat core. The unusual domain arrangement may be crucial for the modulation of interactions with other co-regulatory molecules such as cyclin-CDK complexes, and has implications for the quaternary interactions within the multisubunit SBF and MBF transcription complexes.
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{{ABSTRACT_PUBMED_10048928}}
==About this Structure==
==About this Structure==
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[[Category: Cell-cycle]]
[[Category: Cell-cycle]]
[[Category: Transcription regulation]]
[[Category: Transcription regulation]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 09:12:38 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 13:02:49 2008''

Revision as of 10:02, 27 July 2008

Image:1sw6.png

Template:STRUCTURE 1sw6

S. CEREVISIAE SWI6 ANKYRIN-REPEAT FRAGMENT

Template:ABSTRACT PUBMED 10048928

About this Structure

1SW6 is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

X-ray structural analysis of the yeast cell cycle regulator Swi6 reveals variations of the ankyrin fold and has implications for Swi6 function., Foord R, Taylor IA, Sedgwick SG, Smerdon SJ, Nat Struct Biol. 1999 Feb;6(2):157-65. PMID:10048928

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