1EA5	Hydrolase	date	Nov 06, 2000
title	Native Acetylcholinesterase (E.C. 3.1.1.7) From Torpedo Cali 1.8a Resolution
authors	M.Harel, M.Weik, I.Silman, J.L.Sussman
compound		source
Molecule: Acetylcholinesterase Chain: A 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
symmetry	Space Group: P 31 2 1	R_factor 0.185 R_Free 0.205
crystal cell	length a length b length c angle alpha angle beta angle gamma 111.573 111.573 137.587 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	NAG	enzyme	Hydrolase E.C.3.1.1.7 BRENDA
related structures	by homologous chain: 1W6R
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] (110 Kb) [Save to disk] Biological Unit Coordinates (1ea5.pdb1.gz) 203 Kb LPC: Ligand-Protein Contacts for 1EA5 CSU: Contacts of Structural Units for 1EA5 Likely Quarternary Molecular Structure file(s) for 1EA5 Structure Factors (620 Kb) Retrieve 1EA5 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1EA5 from S2C, [Save to disk] Re-refined 1ea5 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1EA5 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 1EA5

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 1EA5, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ea5a_, 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: [1ea5_A] [1ea5] SWISS-PROT database: [P04058] Domain organization of [ACES_TORCA] by SWISSPFAM

Other resources with information on 1EA5

Community annotation for 1EA5 at PDBWiki (http://pdbwiki.org) LED, table of lipase structures from Lipase Engineering Database. MMDB (Entrez's Structure Database)

Movements, Movies and Images

Domain movements in 1EA5 from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

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