6PNW | pdb_00006pnw

X-RAY STRUCTURE OF ERABUTOXIN C, A DIMERIC NEUROTOXIN

• PDB DOI: https://doi.org/10.2210/pdb6PNW/pdb

• Classification: TOXIN
• Organism(s): Laticauda semifasciata
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2019-07-03 Released: 2019-07-24 
• Deposition Author(s): Corfield, P.W.R., Low, B.W.
• Funding Organization(s): National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 
  0.161 (Depositor), 0.180 (DCC) 

Starting Model: experimental

Literature

The Structure Of Erabutoxin C At 2.1A Resolution

Corfield, P.W.R., Low, B.W.

(1992) Am Cryst Assoc ,abstr Papers (annual Meeting) 

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 13.73 kDa 
• Atom Count: 1,101 
• Modeled Residue Count: 124 
• Deposited Residue Count: 124 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Erabutoxin c	A, B	62	Laticauda semifasciata	Mutation(s): 0  Membrane Entity: Yes
UniProt
Find proteins for Q7T2I5 (Laticauda semifasciata) Explore Q7T2I5  Go to UniProtKB:  Q7T2I5

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work:  0.161 (Depositor), 0.180 (DCC) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.6	α = 90
b = 53.75	β = 90
c = 40.99	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement
REFPK	data processing
SORTAV	data scaling
SORTVA	data reduction
TFORM	phasing
FRFS	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-07-24 
Deposition Author(s): Corfield, P.W.R., Low, B.W.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)	United States	NS22719
National Institutes of Health/National Institute of Neurological Disorders and Stroke (NIH/NINDS)	United States	NS07747

Revision History  

• Version 1.0: 2019-07-24
  Type: Initial release
  
• Version 1.1: 2019-12-18
  Changes: Author supporting evidence
• Version 1.2: 2023-10-11
  Changes: Data collection, Database references, Refinement description
• Version 1.3: 2024-11-20
  Changes: Structure summary