1NXB | pdb_00001nxb

STRUCTURE AND FUNCTION OF SNAKE VENOM CURARIMIMETIC NEUROTOXINS

• PDB DOI: https://doi.org/10.2210/pdb1NXB/pdb

• Classification: NEUROTOXIN (POST-SYNAPTIC)
• Organism(s): Laticauda semifasciata
• Mutation(s): No 


• Deposited: 1980-08-08 Released: 1981-01-27 
• Deposition Author(s): Tsernoglou, D., Petsko, G.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.38 Å

Literature

Structure and function of snake venom curarimimetic neurotoxins.

Tsernoglou, D., Petsko, G.A., Hudson, R.A.

(1978) Mol Pharmacol 14: 710-716

• PubMed: 683181 
• Primary Citation of Related Structures:  
  1NXB

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 7.07 kDa 
• Atom Count: 543 
• Modeled Residue Count: 62 
• Deposited Residue Count: 62 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NEUROTOXIN B	A	62	Laticauda semifasciata	Mutation(s): 0
UniProt
Find proteins for Q90VW1 (Laticauda semifasciata) Explore Q90VW1  Go to UniProtKB:  Q90VW1

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A], C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.38 Å

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.9	α = 90
b = 46.6	β = 90
c = 21.3	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1981-01-27 
Deposition Author(s): Tsernoglou, D., Petsko, G.A.

Revision History  

• Version 1.0: 1981-01-27
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-12-25
  Changes: Advisory, Data collection, Database references, Derived calculations, Structure summary