6CHA	Hydrolase (Serine Proteinase)	date	Feb 06, 1987
title	Structure Of A Tetrahedral Transition State Complex Of Alpha-Chymotrypsin At 1.8-Angstroms Resolution
authors	A.Tulinsky, R.A.Blevins
compound		source
Molecule: Alpha-Chymotrypsin A Chain: A, E Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
Molecule: Alpha-Chymotrypsin A Chain: B, F Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
Molecule: Alpha-Chymotrypsin A Chain: C, G Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
symmetry	Space Group: P 1 21 1	R_factor R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 49.270 67.160 65.910 90.00 101.68 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	PBA BindingDB	enzyme	Hydrolase E.C.3.4.21.1 BRENDA
related structures	by homologous chain: 1P2N, 1T8M
Gene Ontology	Chain Function Process Component C, G F, B
Primary reference	Structure of a tetrahedral transition state complex of alpha-chymotrypsin dimer at 1.8-A resolution., Tulinsky A, Blevins RA, J Biol Chem 1987 Jun 5;262(16):7737-43. PMID:3584139

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (81 Kb) [Save to disk] Biological Unit Coordinates (6cha.pdb1.gz) 75 Kb LPC: Ligand-Protein Contacts for 6CHA CSU: Contacts of Structural Units for 6CHA Likely Quarternary Molecular Structure file(s) for 6CHA Retrieve 6CHA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 6CHA from S2C, [Save to disk]

View 6CHA 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 6CHA

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 6CHA, from MSDmotif at EBI Genome occurence of 6CHA's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d6chaa_, region A [Jmol] [rasmolscript] [script source]     - Domain d6chab_, region B [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: [6cha_F] [6cha_G] [6cha_C] [6cha_E] [6cha_A] [6cha] [6cha_B] SWISS-PROT database: [P00766] Domain organization of [CTRA_BOVIN] by SWISSPFAM Domain found in 6CHA: [Tryp_SPc ] by SMART

Other resources with information on 6CHA

Community annotation for 6CHA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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