2O20

Crystal structure of transcription regulator CcpA of Lactococcus lactis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.177 

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This is version 1.2 of the entry. See complete history


Literature

Structure of the transcription regulator CcpA from Lactococcus lactis

Loll, B.Kowalczyk, M.Alings, C.Chieduch, A.Bardowski, J.Saenger, W.Biesiadka, J.

(2007) Acta Crystallogr D Biol Crystallogr 63: 431-436

  • DOI: 10.1107/S0907444907000546
  • Primary Citation of Related Structures:  
    2O20

  • PubMed Abstract: 
  • 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 f ...

    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.


    Organizational Affiliation

    Institute for Chemistry and Biochemistry/Crystallography, Freie Universität Berlin, Takustrasse 6, D-14195 Berlin, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Catabolite control protein A ABCDEFGH332Lactococcus lactisMutation(s): 1 
Gene Names: ccpA
Find proteins for Q9CF33 (Lactococcus lactis subsp. lactis (strain IL1403))
Explore Q9CF33 
Go to UniProtKB:  Q9CF33
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.756α = 90
b = 74.267β = 102.36
c = 160.302γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-03-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance