1K41	Isomerase	date	Oct 05, 2001
title	Crystal Structure Of Ksi Y57s Mutant
authors	S.S.Cha, B.H.Oh, G.H.Nam, D.S.Jang, T.H.Lee, K.Y.Choi
compound		source
Molecule: Ketosteroid Isomerase Chain: A, B Synonym: Steroid Delta-Isomerase Ec: 5.3.3.1 Engineered: Yes Mutation: Yes		Organism_scientific: Pseudomonas Putida Organism_taxid: 303 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: C 1 2 1	R_factor 0.235 R_Free 0.315
crystal cell	length a length b length c angle alpha angle beta angle gamma 88.889 73.135 51.156 90.00 89.85 90.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand		enzyme	Isomerase E.C.5.3.3.1 BRENDA
related structures	by homologous chain: 1VZZ, 1W01
Gene Ontology	Chain Function Process Component A, B
Primary reference	Maintenance of alpha-helical structures by phenyl rings in the active-site tyrosine triad contributes to catalysis and stability of ketosteroid isomerase from Pseudomonas putida biotype B., Nam GH, Jang DS, Cha SS, Lee TH, Kim DH, Hong BH, Yun YS, Oh BH, Choi KY, Biochemistry 2001 Nov 13;40(45):13529-37. PMID:11695900

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (43 Kb) [Save to disk] Biological Unit Coordinates (1k41.pdb1.gz) 39 Kb CSU: Contacts of Structural Units for 1K41 Likely Quarternary Molecular Structure file(s) for 1K41 Retrieve 1K41 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1K41 from S2C, [Save to disk]

View 1K41 in 3D

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Visual 3D analysis of 1K41

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1K41, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1k41a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1k41b_, 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: [1k41] [1k41_B] [1k41_A] SWISS-PROT database: [P07445] Domain organization of [SDIS_PSEPU] by SWISSPFAM

Other resources with information on 1K41

Community annotation for 1K41 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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