1TM6

NMR Structure of the Free Zinc Binding C-terminal Domain of SecA


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy,target function 

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This is version 1.2 of the entry. See complete history


Literature

NMR structure of the C-terminal domain of SecA in the free state

Matousek, W.M.Alexandrescu, A.T.

(2004) Biochim Biophys Acta 1702: 163-171

  • DOI: 10.1016/j.bbapap.2004.08.012
  • Primary Citation of Related Structures:  
    1TM6

  • PubMed Abstract: 
  • SecA is an integral component of the prokaryotic Sec preprotein secretory translocase system. We report here the solution NMR structure of a fragment corresponding to the C-terminal domain of Escherichia coli SecA. In the presence of Zn2+, the fragment adopts a shortened version of the classic betabetaalpha zinc finger fold ...

    SecA is an integral component of the prokaryotic Sec preprotein secretory translocase system. We report here the solution NMR structure of a fragment corresponding to the C-terminal domain of Escherichia coli SecA. In the presence of Zn2+, the fragment adopts a shortened version of the classic betabetaalpha zinc finger fold. The isolated C-terminal domain shows substantial differences from the X-ray structure of a homologous SecA domain bound to the chaperone-like cofactor SecB. The differences between the structures of the free and bound forms suggest that binding to SecB causes a perturbation of the C-terminal domain's intrinsically favored betabetaalpha fold.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of Connecticut, 91 North Eagleville Road, U-3125, Storrs, CT 06269-3125, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Preprotein translocase secA subunitA22Escherichia coliMutation(s): 0 
UniProt
Find proteins for P10408 (Escherichia coli (strain K12))
Explore P10408 
Go to UniProtKB:  P10408
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with acceptable covalent geometry,structures with favorable non-bond energy,structures with the least restraint violations,structures with the lowest energy,target function 
  • OLDERADO: 1TM6 Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-10-12
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance