2o20: Difference between revisions

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[[Image:2o20.gif|left|200px]]
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{{STRUCTURE_2o20|  PDB=2o20  |  SCENE=  }}  
{{STRUCTURE_2o20|  PDB=2o20  |  SCENE=  }}  


'''Crystal structure of transcription regulator CcpA of Lactococcus lactis'''
===Crystal structure of transcription regulator CcpA of Lactococcus lactis===




==Overview==
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Catabolite control protein A (CcpA) functions as master transcriptional regulator of carbon catabolism in Firmicutes. It belongs to the family of bacterial repressor/regulator proteins. Here, the crystal structure of the 76 kDa homodimeric CcpA protein from Lactococcus lactis subsp. lactis IL1403 is presented at 1.9 A resolution in the absence of cognate DNA. The phases were derived by molecular replacement and the structure was refined to crystallographic R and R(free) factors of 0.177 and 0.211, respectively. The presence of a sulfate molecule in the direct vicinity of a putative effector-binding site in the monomer allowed the derivation of a model for the possible binding of small organic effector molecules.
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{{ABSTRACT_PUBMED_17372346}}


==About this Structure==
==About this Structure==
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[[Category: Helix-turn-helix]]
[[Category: Helix-turn-helix]]
[[Category: Transcriptional regulator]]
[[Category: Transcriptional regulator]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Jun  5 10:08:26 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 09:09:42 2008''
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