1DEN

PROTEINASE INHIBITOR HOMOLOGUES AS POTASSIUM CHANNEL BLOCKERS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 29 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Proteinase inhibitor homologues as potassium channel blockers.

Lancelin, J.M.Foray, M.F.Poncin, M.Hollecker, M.Marion, D.

(1994) Nat.Struct.Mol.Biol. 1: 246-250

  • Primary Citation of Related Structures:  1DEM

  • PubMed Abstract: 
  • We report here the NMR structure of dendrotoxin I, a powerful potassium channel blocker from the venom of the African Elapidae snake Dendroaspis polylepis polylepis (black mamba), calculated from an experimentally-derived set of 719 geometric restrai ...

    We report here the NMR structure of dendrotoxin I, a powerful potassium channel blocker from the venom of the African Elapidae snake Dendroaspis polylepis polylepis (black mamba), calculated from an experimentally-derived set of 719 geometric restraints. The backbone of the toxin superimposes on bovine pancreatic trypsin inhibitor (BPTI) with a root-mean-square deviation of < 1.7 A. The surface electrostatic potential calculated for dendrotoxin I and BPTI, reveal an important difference which might account for the differences in function of the two proteins. These proteins may provide examples of adaptation for specific and diverse biological functions while at the same time maintaining the overall three-dimensional structure of a common ancestor.


    Related Citations: 
    • Sequence-Specific 1H-NMR Assignment and Secondary Structure of Black Mamba Dendrotoxin I, a Highly Selective Blocker of Voltage-Gated Potassium Channels
      Foray, M.-F.,Lancelin, J.-M.,Hollecker, M.,Marion, D.
      (1993) Eur.J.Biochem. 211: 813


    Organizational Affiliation

    Institute de Biologie Structurale CEA-CNRS, Grenoble, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DENDROTOXIN I
A
60Dendroaspis polylepis polylepisN/A
Find proteins for P00979 (Dendroaspis polylepis polylepis)
Go to UniProtKB:  P00979
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 29 
  • Olderado: 1DEN Olderado
Software Package:
Software NamePurpose
AMBERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-05-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance