3GCT	Hydrolase Peptide	date	Sep 04, 1990
title	Structure Of Gamma-Chymotrypsin In The Range Ph 2.0 To P Suggests That Gamma-Chymotrypsin Is A Covalent Acyl-Enzyme Low Ph
authors	M.M.Dixon, B.W.Matthews
compound		source
Molecule: Gamma-Chymotrypsin A Chain: E Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
Molecule: Gamma-Chymotrypsin A Chain: F Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
Molecule: Gamma-Chymotrypsin A Chain: G Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
Molecule: Unk Pro Gly Ala Tyr Peptide Chain: B
symmetry	Space Group: P 42 21 2	R_factor 0.173 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 70.000 70.000 97.700 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.60 Å
ligand	SO4	enzyme	Hydrolase E.C.3.4.21.1 BRENDA
related structures	by homologous chain: 1AB9, 1GGD
Gene Ontology	Chain Function Process Component F G
Primary reference	Structure of gamma-chymotrypsin in the range pH 2.0 to pH 10.5 suggests that gamma-chymotrypsin is a covalent acyl-enzyme adduct at low pH., Dixon MM, Brennan RG, Matthews BW, Int J Biol Macromol 1991 Apr;13(2):89-96. PMID:1888717

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (45 Kb) [Save to disk] Biological Unit Coordinates (3gct.pdb1.gz) 79 Kb Biological Unit Coordinates (3gct.pdb2.gz) 40 Kb LPC: Ligand-Protein Contacts for 3GCT CSU: Contacts of Structural Units for 3GCT Likely Quarternary Molecular Structure file(s) for 3GCT Structure Factors (154 Kb) Retrieve 3GCT in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3GCT from S2C, [Save to disk] Re-refined 3gct structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3GCT 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 3GCT

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 3GCT, from MSDmotif at EBI Genome occurence of 3GCT's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d3gcta_, 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: [3gct_B] [3gct_G] [3gct_F] [3gct_E] [3gct] SWISS-PROT database: [P00766] Domain organization of [CTRA_BOVIN] by SWISSPFAM Domain found in 3GCT: [Tryp_SPc ] by SMART

Other resources with information on 3GCT

Community annotation for 3GCT at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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