3CPO	Isomerase	date	Mar 31, 2008
title	Crystal Structure Of Ketosteroid Isomerase D40n With Bound 2 Fluorophenol
authors	J.M.M.Caaveiro, B.Pybus, D.Ringe, G.Petsko
compound		source
Molecule: Delta(5)-3-Ketosteroid Isomerase Chain: A Synonym: Steroid Delta-Isomerase Ec: 5.3.3.1 Engineered: Yes Mutation: Yes		Organism_scientific: Pseudomonas Putida Organism_taxid: 303 Gene: Ksi Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pkk
symmetry	Space Group: C 2 2 21	R_factor 0.166 R_Free 0.200
crystal cell	length a length b length c angle alpha angle beta angle gamma 35.347 95.013 72.376 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.24 Å
ligand	FP2	enzyme	Isomerase E.C.5.3.3.1 BRENDA
Gene Ontology	Chain Function Process Component A
Primary reference	Testing geometrical discrimination within an enzyme active site: constrained hydrogen bonding in the ketosteroid isomerase oxyanion hole., Sigala PA, Kraut DA, Caaveiro JM, Pybus B, Ruben EA, Ringe D, Petsko GA, Herschlag D, J Am Chem Soc. 2008 Oct 15;130(41):13696-708. Epub 2008 Sep 23. PMID:18808119

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (51 Kb) [Save to disk] Biological Unit Coordinates (3cpo.pdb1.gz) 90 Kb LPC: Ligand-Protein Contacts for 3CPO CSU: Contacts of Structural Units for 3CPO Likely Quarternary Molecular Structure file(s) for 3CPO Structure Factors (468 Kb) Retrieve 3CPO in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3CPO from S2C, [Save to disk] Re-refined 3cpo structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3CPO 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 3CPO

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 3CPO, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3cpo] [3cpo_A] SWISS-PROT database: [P07445] Domain organization of [SDIS_PSEPU] by SWISSPFAM

Other resources with information on 3CPO

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

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