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1cma

From Proteopedia

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{{STRUCTURE_1cma| PDB=1cma | SCENE= }}
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'''MET REPRESSOR/DNA COMPLEX + S-ADENOSYL-METHIONINE'''
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===MET REPRESSOR/DNA COMPLEX + S-ADENOSYL-METHIONINE===
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==Overview==
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The crystal structure of the met repressor-operator complex shows two dimeric repressor molecules bound to adjacent sites 8 base pairs apart on an 18-base-pair DNA fragment. Sequence specificity is achieved by insertion of double-stranded antiparallel protein beta-ribbons into the major groove of B-form DNA, with direct hydrogen-bonding between amino-acid side chains and the base pairs. The repressor also recognizes sequence-dependent distortion or flexibility of the operator phosphate backbone, conferring specificity even for inaccessible base pairs.
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{{ABSTRACT_PUBMED_1406951}}
==About this Structure==
==About this Structure==
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[[Category: Double helix]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:53:10 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 20:56:37 2008''

Revision as of 17:56, 30 June 2008


PDB ID 1cma

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1cma, resolution 2.80Å ()
Ligands:
Resources: FirstGlance, OCA, RCSB, PDBsum
Coordinates: save as pdb, mmCIF, xml



MET REPRESSOR/DNA COMPLEX + S-ADENOSYL-METHIONINE

Template:ABSTRACT PUBMED 1406951

About this Structure

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

Reference

Crystal structure of the met repressor-operator complex at 2.8 A resolution reveals DNA recognition by beta-strands., Somers WS, Phillips SE, Nature. 1992 Oct 1;359(6394):387-93. PMID:1406951

Page seeded by OCA on Mon Jun 30 20:56:37 2008

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