2CGP

CATABOLITE GENE ACTIVATOR PROTEIN/DNA COMPLEX, ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.296 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure of a CAP-DNA complex having two cAMP molecules bound to each monomer.

Passner, J.M.Steitz, T.A.

(1997) Proc.Natl.Acad.Sci.USA 94: 2843-2847


  • PubMed Abstract: 
  • The 2.2 A resolution crystal structure of the Escherichia coli catabolite gene activator protein (CAP) complexed with cAMP and a 46-bp DNA fragment reveals a second cAMP molecule bound to each protein monomer. The second cAMP is in the syn conformati ...

    The 2.2 A resolution crystal structure of the Escherichia coli catabolite gene activator protein (CAP) complexed with cAMP and a 46-bp DNA fragment reveals a second cAMP molecule bound to each protein monomer. The second cAMP is in the syn conformation and is located on the DNA binding domain interacting with the helix-turn-helix, a beta-hairpin from the regulatory domain and the DNA (via water molecules). The presence of this second cAMP site resolves the apparent discrepancy between the NMR and x-ray data on the conformation of cAMP, and explains the cAMP concentration-dependent behaviors of the protein. In addition, this site's close proximity to mutations affecting transcriptional activation and its water-mediated interactions with a DNA recognition residue (E181) and DNA raise the possibility that this site has biological relevance.


    Related Citations: 
    • Crystal Structure of a CAP-DNA Complex: The DNA is Bent by 90 Degrees
      Schultz, S.C.,Shields, G.C.,Steitz, T.A.
      (1991) Science 253: 1001


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06511, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (CATABOLITE GENE ACTIVATOR PROTEIN)
A
210Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: crp (cap, csm)
Find proteins for P0ACJ8 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ACJ8
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(*GP*TP*CP*AP*CP*AP*TP*TP*AP*AP*T)-3')B11N/A
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (5'-D(*AP*TP*TP*AP*AP*TP*GP*TP*GP*AP*CP*AP*TP*AP*T)-3')C15N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CMP
Query on CMP

Download SDF File 
Download CCD File 
A
ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE
CYCLIC AMP; CAMP
C10 H12 N5 O6 P
IVOMOUWHDPKRLL-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.296 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 79.190α = 90.00
b = 79.190β = 90.00
c = 140.400γ = 120.00
Software Package:
Software NamePurpose
X-PLORrefinement
SCALEPACKdata scaling
DENZOdata reduction
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-02-04
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance