1kp8

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{{STRUCTURE_1kp8| PDB=1kp8 | SCENE= }}
{{STRUCTURE_1kp8| PDB=1kp8 | SCENE= }}
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'''Structural Basis for GroEL-assisted Protein Folding from the Crystal Structure of (GroEL-KMgATP)14 at 2.0 A Resolution'''
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===Structural Basis for GroEL-assisted Protein Folding from the Crystal Structure of (GroEL-KMgATP)14 at 2.0 A Resolution===
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==Overview==
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Nucleotide regulates the affinity of the bacterial chaperonin GroEL for protein substrates. GroEL binds protein substrates with high affinity in the absence of ATP and with low affinity in its presence. We report the crystal structure of (GroEL-KMgATP)(14) refined to 2.0 A resolution in which the ATP triphosphate moiety is directly coordinated by both K(+) and Mg(2+). Upon the binding of KMgATP, we observe previously unnoticed domain rotations and a 102 degrees rotation of the apical domain surface helix I. Two major consequences are a large lateral displacement of, and a dramatic reduction of hydrophobicity in, the apical domain surface. These results provide a basis for the nucleotide-dependent regulation of protein substrate binding and suggest a mechanism for GroEL-assisted protein folding by forced unfolding.
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{{ABSTRACT_PUBMED_12654267}}
==About this Structure==
==About this Structure==
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[[Category: Chaperonin]]
[[Category: Chaperonin]]
[[Category: Groel]]
[[Category: Groel]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:00:18 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 10:41:48 2008''

Revision as of 07:41, 2 July 2008

Image:1kp8.png

Template:STRUCTURE 1kp8

Structural Basis for GroEL-assisted Protein Folding from the Crystal Structure of (GroEL-KMgATP)14 at 2.0 A Resolution

Template:ABSTRACT PUBMED 12654267

About this Structure

1KP8 is a Single protein structure of sequence from Escherichia coli. This structure supersedes the now removed PDB entry 1der. Full crystallographic information is available from OCA.

Reference

Structural basis for GroEL-assisted protein folding from the crystal structure of (GroEL-KMgATP)14 at 2.0A resolution., Wang J, Boisvert DC, J Mol Biol. 2003 Apr 4;327(4):843-55. PMID:12654267

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