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1exk

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[[Image:1exk.jpg|left|200px]]
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{{STRUCTURE_1exk| PDB=1exk | SCENE= }}
{{STRUCTURE_1exk| PDB=1exk | SCENE= }}
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'''SOLUTION STRUCTURE OF THE CYSTEINE-RICH DOMAIN OF THE ESCHERICHIA COLI CHAPERONE PROTEIN DNAJ.'''
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===SOLUTION STRUCTURE OF THE CYSTEINE-RICH DOMAIN OF THE ESCHERICHIA COLI CHAPERONE PROTEIN DNAJ.===
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==Overview==
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The solution structure of the cysteine-rich (CR) domain of Escherichia coli DnaJ has been solved by NMR methods. The structure of a 79 residue CR domain construct shows a novel fold with an overall V-shaped extended beta-hairpin topology. The CR domain is characterized by four C-X-X-C-X-G-X-G sequence motifs that bind two zinc ions. Residues in these two zinc modules show strong similarities in the grouping of resonances in the (15)N-(1)H HSQC spectrum and display pseudo-symmetry of the motifs in the calculated structures. The conformation of the cysteine residues coordinated to the zinc ion resembles that of the rubredoxin-knuckle, but there are significant differences in hydrogen bonding patterns in the two motifs. Zinc (15)N-(1)H HSQC titrations indicate that the fold of the isolated DnaJ CR domain is zinc-dependent and that one zinc module folds before the other. The C-X-X-C-X-G-X-G sequence motif is highly conserved in CR domains from a wide variety of species. The three-dimensional structure of the E. coli CR domain indicates that this sequence conservation is likely to result in a conserved structural motif.
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(as it appears on PubMed at http://www.pubmed.gov), where 10891270 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10891270}}
==About this Structure==
==About this Structure==
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1EXK is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EXK OCA].
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1EXK is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EXK OCA].
==Reference==
==Reference==
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[[Category: Extended beta-hairpin]]
[[Category: Extended beta-hairpin]]
[[Category: Zinc-binding motif]]
[[Category: Zinc-binding motif]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 15:38:29 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 02:10:31 2008''

Revision as of 23:10, 30 June 2008

Template:STRUCTURE 1exk

SOLUTION STRUCTURE OF THE CYSTEINE-RICH DOMAIN OF THE ESCHERICHIA COLI CHAPERONE PROTEIN DNAJ.

Template:ABSTRACT PUBMED 10891270

About this Structure

1EXK is a Single protein structure of sequence from Escherichia coli. Full experimental information is available from OCA.

Reference

Solution structure of the cysteine-rich domain of the Escherichia coli chaperone protein DnaJ., Martinez-Yamout M, Legge GB, Zhang O, Wright PE, Dyson HJ, J Mol Biol. 2000 Jul 21;300(4):805-18. PMID:10891270

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