2INX	Isomerase	date	Oct 09, 2006
title	Crystal Structure Of Ketosteroid Isomerase D40n From Pseudom Putida (Pksi) With Bound 2,6-Difluorophenol
authors	J.M.Martinez Caaveiro, B.Pybus, D.Ringe, G.A.Petsko, P.Sigala, D. D.Herschlag
compound		source
Molecule: Steroid Delta-Isomerase Chain: A Synonym: Delta-5-3-Ketosteroid Isomerase Ec: 5.3.3.1 Engineered: Yes Mutation: Yes		Organism_scientific: Pseudomonas Putida Organism_taxid: 303 Gene: Ksi Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid
symmetry	Space Group: C 2 2 21	R_factor 0.185 R_Free 0.234
crystal cell	length a length b length c angle alpha angle beta angle gamma 35.114 94.887 72.424 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.50 Å
ligand	FFP	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] (50 Kb) [Save to disk] Biological Unit Coordinates (2inx.pdb1.gz) 88 Kb LPC: Ligand-Protein Contacts for 2INX CSU: Contacts of Structural Units for 2INX Likely Quarternary Molecular Structure file(s) for 2INX Structure Factors (135 Kb) Retrieve 2INX in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2INX from S2C, [Save to disk] Re-refined 2inx structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2INX 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 2INX

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 2INX, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2inx] [2inx_A] SWISS-PROT database: [P07445] Domain organization of [SDIS_PSEPU] by SWISSPFAM

Other resources with information on 2INX

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

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