2CHA	Hydrolase (Serine Proteinase)	date	Jan 01, 1975
title	The Structure Of Crystalline Alpha-Chymotrypsin, V.The Atom Structure Of Tosyl-Alpha-Chymotrypsin At 2 Angstroms Resolu
authors	J.J.Birktoft, D.M.Blow
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 49.100 67.400 65.900 90.00 101.70 90.00
method	X-Ray Diffraction	resolution	2.00 Å
ligand	TSU	enzyme	Hydrolase E.C.3.4.21.1 BRENDA
note	2CHA (Molecule of the Month:pdb46, pdb142)
Gene Ontology	Chain Function Process Component C, G F, B
Primary reference	Structure of crystalline -chymotrypsin. V. The atomic structure of tosyl- -chymotrypsin at 2 A resolution., Birktoft JJ, Blow DM, J Mol Biol 1972 Jul 21;68(2):187-240. PMID:5069789

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (67 Kb) [Save to disk] Biological Unit Coordinates (2cha.pdb1.gz) 61 Kb LPC: Ligand-Protein Contacts for 2CHA CSU: Contacts of Structural Units for 2CHA Likely Quarternary Molecular Structure file(s) for 2CHA Retrieve 2CHA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2CHA from S2C, [Save to disk]

View 2CHA 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 2CHA

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2CHA, from MSDmotif at EBI Genome occurence of 2CHA's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d2cha__, region [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: [2cha_A] [2cha_C] [2cha_E] [2cha] [2cha_B] [2cha_G] [2cha_F] SWISS-PROT database: [P00766] Domain organization of [CTRA_BOVIN] by SWISSPFAM Domain found in 2CHA: [Tryp_SPc ] by SMART

Other resources with information on 2CHA

Community annotation for 2CHA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Images from IMB Jena Image Library of Biological Macromolecules.

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