1GPK	Hydrolase	date	Nov 05, 2001
title	Structure Of Acetylcholinesterase Complex With (+)-Huperzine Resolution
authors	H.Dvir, M.Harel, M.Chetrit, I.Silman, J.L.Sussman
compound		source
Molecule: Acetylcholinesterase Chain: A Fragment: Residues 22-558 Synonym: Ache Ec: 3.1.1.7		Organism_scientific: Torpedo Californica Organism_common: Pacific Electric Ray Organism_taxid: 7787 Variant: G2 Form Organ: Electric Organ Tissue: Electroplaque Other_details: Purified From The Electric Organ
symmetry	Space Group: P 31 2 1	R_factor 0.189 R_Free 0.214
crystal cell	length a length b length c angle alpha angle beta angle gamma 111.421 111.421 137.145 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.10 Å
ligand	HUP, NAG BindingDB	enzyme	Hydrolase E.C.3.1.1.7 BRENDA
related structures	by homologous chain: 1E66, 1QIF
Gene Ontology	Chain Function Process Component A acetylcholine catabolic proc...
Primary reference	X-ray structures of Torpedo californica acetylcholinesterase complexed with (+)-huperzine A and (-)-huperzine B: structural evidence for an active site rearrangement., Dvir H, Jiang HL, Wong DM, Harel M, Chetrit M, He XC, Jin GY, Yu GL, Tang XC, Silman I, Bai DL, Sussman JL, Biochemistry 2002 Sep 3;41(35):10810-8. PMID:12196020

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (103 Kb) [Save to disk] Biological Unit Coordinates (1gpk.pdb1.gz) 190 Kb LPC: Ligand-Protein Contacts for 1GPK CSU: Contacts of Structural Units for 1GPK Likely Quarternary Molecular Structure file(s) for 1GPK Structure Factors (419 Kb) Retrieve 1GPK in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1GPK from S2C, [Save to disk] Re-refined 1gpk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1GPK 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 1GPK

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1GPK, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1gpka_, region A [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: [1gpk_A] [1gpk] SWISS-PROT database: [P04058] Domain organization of [ACES_TORCA] by SWISSPFAM

Other resources with information on 1GPK

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

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