1CHO	Hydrolase Hydrolase Inhibitor	date	Mar 04, 1988
title	Crystal And Molecular Structures Of The Complex Of Alpha-Ch With Its Inhibitor Turkey Ovomucoid Third Domain At 1.8 Ang Resolution
authors	M.Fujinaga, A.R.Sielecki, R.J.Read, W.Ardelt, M.Laskowskijunior, M.N.G.James
compound		source
Molecule: Alpha-Chymotrypsin A Chain: E Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
Molecule: Alpha-Chymotrypsin A Chain: F Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
Molecule: Alpha-Chymotrypsin A Chain: G Ec: 3.4.21.1		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913
Molecule: Turkey Ovomucoid Third Domain (Omtky3) Chain: I		Organism_scientific: Meleagris Gallopavo Organism_common: Turkey Organism_taxid: 9103
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 44.920 54.520 57.180 90.00 103.90 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand		enzyme	Hydrolase E.C.3.4.21.1 BRENDA
related structures	by homologous chain: 1CT0, 1P2M, 1PPF, 2GCT
Gene Ontology	Chain Function Process Component F G I
Primary reference	Crystal and molecular structures of the complex of alpha-chymotrypsin with its inhibitor turkey ovomucoid third domain at 1.8 A resolution., Fujinaga M, Sielecki AR, Read RJ, Ardelt W, Laskowski M Jr, James MN, J Mol Biol 1987 May 20;195(2):397-418. PMID:3477645

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (52 Kb) [Save to disk] Biological Unit Coordinates (1cho.pdb1.gz) 49 Kb CSU: Contacts of Structural Units for 1CHO Likely Quarternary Molecular Structure file(s) for 1CHO Retrieve 1CHO in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1CHO from S2C, [Save to disk]

View 1CHO 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 1CHO

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1CHO, from MSDmotif at EBI Genome occurence of 1CHO's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1choe_, region E [Jmol] [rasmolscript] [script source]     - Domain d1choi_, region I [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: [1cho_I] [1cho] [1cho_G] [1cho_E] [1cho_F] SWISS-PROT database: [P00766] [P68390] Domain organization of [CTRA_BOVIN] [IOVO_MELGA] by SWISSPFAM Domains found in 1CHO: [KAZAL] [Tryp_SPc ] by SMART

Other resources with information on 1CHO

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

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