2CDX

STRUCTURE OF COBRA CARDIOTOXIN CTXI AS DERIVED FROM NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY AND DISTANCE GEOMETRY CALCULATIONS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 11 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of cobra cardiotoxin CTX I as derived from nuclear magnetic resonance spectroscopy and distance geometry calculations.

Jahnke, W.Mierke, D.F.Beress, L.Kessler, H.

(1994) J Mol Biol 240: 445-458

  • DOI: 10.1006/jmbi.1994.1460
  • Primary Citation of Related Structures:  
    2CDX

  • PubMed Abstract: 
  • The structure of cardiotoxin CTX I from Naja naja atra has been investigated by NMR spectroscopy. Sequence specific resonance assignments have been obtained for all backbone protons as well as for most side-chain protons. Distance geometry calculations were carried out using a metric matrix DG program ...

    The structure of cardiotoxin CTX I from Naja naja atra has been investigated by NMR spectroscopy. Sequence specific resonance assignments have been obtained for all backbone protons as well as for most side-chain protons. Distance geometry calculations were carried out using a metric matrix DG program. A total of 715 NOE constraints, 27 phi angle constraints and a list of the hydrogen bond donors were used for the metric matrix DG calculations and refinement. The average pairwise r.m.s.d. of the resulting structures was 1.01 A for the backbone heavy atoms, and 1.69 A for all heavy atoms. The protein is rich in beta structure and consists of a large triple-stranded, antiparallel beta sheet as well as a short double-stranded, antiparallel beta sheet. Non-regular hydrogen bonding is found between side-chains of the carboxy-terminal end and the rest of the core region. The structure is discussed in terms of evolutionary aspects as well as recent investigations about the biological function and active site.


    Organizational Affiliation

    Institut für Organische Chemie und Biochemie, TU München, Garching, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CARDIOTOXIN CTX IA60Naja atraMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P60304 (Naja atra)
Explore P60304 
Go to UniProtKB:  P60304
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 11 
  • OLDERADO: 2CDX Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-11-30
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other