1BBO

HIGH-RESOLUTION SOLUTION STRUCTURE OF THE DOUBLE CYS2*HIS2 ZINC FINGER FROM THE HUMAN ENHANCER BINDING PROTEIN MBP-1


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 60 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

High-resolution solution structure of the double Cys2His2 zinc finger from the human enhancer binding protein MBP-1.

Omichinski, J.G.Clore, G.M.Robien, M.Sakaguchi, K.Appella, E.Gronenborn, A.M.

(1992) Biochemistry 31: 3907-3917


  • PubMed Abstract: 
  • The high-resolution three-dimensional structure of a synthetic 57-residue peptide comprising the double zinc finger of the human enhancer binding protein MBP-1 has been determined in solution by nuclear magnetic resonance spectroscopy on the basis of ...

    The high-resolution three-dimensional structure of a synthetic 57-residue peptide comprising the double zinc finger of the human enhancer binding protein MBP-1 has been determined in solution by nuclear magnetic resonance spectroscopy on the basis of 1280 experimental restraints. A total of 30 simulated annealing structures were calculated. The backbone atomic root-mean-square distributions about the mean coordinate positions are 0.32 and 0.33 A for the N- and C-terminal fingers, respectively, and the corresponding values for all atoms, excluding disordered surface side chains, are 0.36 and 0.40 A. Each finger comprises an irregular antiparallel sheet and a helix, with the zinc tetrahedrally coordinated to two cysteines and two histidines. The overall structure is nonglobular in nature, and the angle between the long axes of the helices is 47 +/- 5 degrees. The long axis of the antiparallel sheet in the N-terminal finger is approximately parallel to that of the helix in the C-terminal finger. Comparison of this structure with the X-ray structure of the Zif-268 triple finger complexed with DNA indicates that the relative orientation of the individual zinc fingers is clearly distinct in the two cases. This difference can be attributed to the presence of a long Lys side chain in the C-terminal finger of MBP-1 at position 40, instead of a short Ala or Ser side chain at the equivalent position in Zif-268. This finding suggests that different contacts may be involved in the binding of the zinc fingers of MBP-1 and Zif-268 to DNA, consistent with the findings from methylation interference experiments that the two fingers of MBP-1 contact 10 base pairs, while the three fingers of Zif-268 contact only 9 base pairs.


    Organizational Affiliation

    Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HUMAN ENHANCER-BINDING PROTEIN MBP-1
A
57Homo sapiensMutation(s): 0 
Gene Names: HIVEP1 (ZNF40)
Find proteins for P15822 (Homo sapiens)
Go to Gene View: HIVEP1
Go to UniProtKB:  P15822
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ABA
Query on ABA
A
L-PEPTIDE LINKINGC4 H9 N O2ALA
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 60 
  • Olderado: 1BBO Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance