3KCC

Crystal structure of D138L mutant of Catabolite Gene Activator Protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.66 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The 1.6A resolution structure of activated D138L mutant of catabolite gene activator protein with two cAMP bound in each monomer

Tao, W.B.Gao, Z.Q.Gao, Z.Y.Zhou, J.H.Huang, Z.X.Dong, Y.H.Yu, S.N.

(2011) Int.J.Biol.Macromol. 48: 459-465

  • DOI: 10.1016/j.ijbiomac.2011.01.009

  • PubMed Abstract: 
  • The X-ray crystal structure of the cAMP-liganded D138L mutant of Escherichia coli catabolite gene activator protein (CAP) was determined at a resolution of 1.66Å. This high resolution crystal structure reveals four cAMP binding sites in the homodimer ...

    The X-ray crystal structure of the cAMP-liganded D138L mutant of Escherichia coli catabolite gene activator protein (CAP) was determined at a resolution of 1.66Å. This high resolution crystal structure reveals four cAMP binding sites in the homodimer. Two anti conformations of cAMPs (anti-cAMP) locate between the β-barrel and the C-helix of each subunit; two syn conformations of cAMPs (syn-cAMP) bind on the surface of the C-terminal domain. With two syn-cAMP molecules bound, the D138L CAP is highly symmetrical with both subunits assuming a "closed" conformation. These differences make the hinge region of the mutant more flexible. Protease susceptibility measurements indicate that D138L is more susceptible to proteases than that of wild type (WT) CAP. The results of protein dynamic experiments (H/D exchange measurements) indicate that the structure of D138L mutant is more dynamic than that of WT CAP, which may impact the recognition of specific DNA sequences.


    Organizational Affiliation

    Department of Chemistry and Institutes of Biomedical Science, Fudan University, Shanghai 200433, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Catabolite gene activator
A, B
260Escherichia coli (strain K12)Mutation(s): 1 
Gene Names: crp (cap, csm)
Find proteins for P0ACJ8 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ACJ8
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CMP
Query on CMP

Download SDF File 
Download CCD File 
A, B
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: 1.66 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.204 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 45.536α = 90.00
b = 102.222β = 110.93
c = 53.912γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
HKL-2000data scaling
PHENIXrefinement
HKL-2000data reduction
CNSphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Source and taxonomy, Version format compliance
  • Version 1.2: 2011-08-10
    Type: Database references