1A2A	Presynaptic Neurotoxin	date	Dec 25, 1997
title	Agkistrotoxin, A Phospholipase A2-Type Presynaptic Neurotoxi Agkistrodon Halys Pallas
authors	L.Tang, Y.Zhou, Z.Lin
compound		source
Molecule: Phospholipase A2 Chain: A, B, C, D, E, F, G, H Synonym: Agkistrotoxin, Atx Ec: 3.1.1.4		Organism_scientific: Gloydius Halys Organism_common: Halys Viper Organism_taxid: 8714
symmetry	Space Group: P 1 21 1	R_factor 0.207 R_Free 0.285
crystal cell	length a length b length c angle alpha angle beta angle gamma 108.950 85.227 71.054 90.00 109.66 90.00
method	X-Ray Diffraction	resolution	2.80 Å
ligand	CL	enzyme	Hydrolase E.C.3.1.1.4 BRENDA
related structures	by homologous chain: 1BJJ
Gene Ontology	Chain Function Process Component F, A, E, B, H, C, D, G toxin activity
Primary reference	Crystal structure of agkistrodotoxin, a phospholipase A2-type presynaptic neurotoxin from agkistrodon halys pallas., Tang L, Zhou YC, Lin ZJ, J Mol Biol 1998 Sep 11;282(1):1-11. PMID:9733637

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (159 Kb) [Save to disk] Biological Unit Coordinates (1a2a.pdb1.gz) 21 Kb Biological Unit Coordinates (1a2a.pdb2.gz) 21 Kb Biological Unit Coordinates (1a2a.pdb3.gz) 21 Kb Biological Unit Coordinates (1a2a.pdb4.gz) 21 Kb Biological Unit Coordinates (1a2a.pdb5.gz) 21 Kb Biological Unit Coordinates (1a2a.pdb6.gz) 21 Kb Biological Unit Coordinates (1a2a.pdb7.gz) 21 Kb Biological Unit Coordinates (1a2a.pdb8.gz) 21 Kb LPC: Ligand-Protein Contacts for 1A2A CSU: Contacts of Structural Units for 1A2A Likely Quarternary Molecular Structure file(s) for 1A2A Structure Factors (173 Kb) Retrieve 1A2A in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A2A from S2C, [Save to disk] Re-refined 1a2a structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1A2A in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 1A2A

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1A2A, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a2aa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1a2ab_, region B [Jmol] [rasmolscript] [script source]     - Domain d1a2ac_, region C [Jmol] [rasmolscript] [script source]     - Domain d1a2ad_, region D [Jmol] [rasmolscript] [script source]     - Domain d1a2ae_, region E [Jmol] [rasmolscript] [script source]     - Domain d1a2af_, region F [Jmol] [rasmolscript] [script source]     - Domain d1a2ag_, region G [Jmol] [rasmolscript] [script source]     - Domain d1a2ah_, region H [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1a2a_F] [1a2a_A] [1a2a_H] [1a2a_E] [1a2a] [1a2a_C] [1a2a_D] [1a2a_B] [1a2a_G] SWISS-PROT database: [P14421] Domain organization of [PA23_AGKHP] by SWISSPFAM Domain found in 1A2A: [PA2c ] by SMART

Other resources with information on 1A2A

Community annotation for 1A2A at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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