ISDA

Deposition Date 1994-09-26

Release Date 1995-05-08

Last Version Date 2024-10-30

Entry Detail

PDB ID:

1NTN

Keywords:

POSTSYNAPTIC NEUROTOXIN

Title:

THE CRYSTAL STRUCTURE OF NEUROTOXIN-I FROM NAJA NAJA OXIANA AT 1.9 ANGSTROMS RESOLUTION

Biological Source:

Source Organism:

Naja oxiana (Taxon ID: 8657)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.90 Å

R-Value Observed:

0.19

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:NEUROTOXIN I
Chain IDs:A
Chain Length:72
Number of Molecules:1
Biological Source:Naja oxiana

UniProt ID:P01382 Pfam ID:PF21947

Primary Citation

Three-dimensional structure of neurotoxin-1 from Naja naja oxiana venom at 1.9 A resolution.

Nickitenko, A.V, Michailov, A.M, Betzel, C, Wilson, K.S, Nickitenko, A.V, Mikhailov, A.M, Betzel, C, Wilson, K.S, Mikhailov, A.M, Nickitenko, A.V, Chetverina, E.V, Trakhanov, S.D, Vainshtein, B.K, Mikhailov, A.M, Nickitenko, A.V, Trakhanov, S.D, Vainshtein, B.K, Chetverina, E.V.Show

Febs Lett. 320 111 117 (1993)

PMID: 8458425 DOI: 10.1016/0014-5793(93)80073-4

Abstact

Neurotoxin-1 from Naja naja oxiana venom (NTX-1) has been crystallized by vapor diffusion in sitting drops. The crystals have cell dimensions of a = 25.2 A, b = 75.6 A, c = 35.9 A, and are in space group P2(1)2(1)2(1). Three-dimensional data to 1.9 A have been recorded by a Syntex P2(1) automatic diffractometer. The atomic structure of the toxin has been determined by molecular replacement using the alpha-cobratoxin (alpha-CTX) as the search model. The position of 534 non-hydrogen protein atoms have been determined. The model contains 65 water molecules. Refinement has led to an R-factor of 19.3% at 1.9 A resolution. The secondary and tertiary structures of NTX-1 have been analyzed and a comparison with structure of the alpha-CTX has been made.

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