1BUQ	Isomerase	date	Sep 04, 1998
title	Solution Structure Of Delta-5-3-Ketosteroid Isomerase Comple The Steroid 19-Nortestosterone-Hemisuccinate
authors	M.A.Massiah, C.Abeygunawardana, A.G.Gittis, A.S.Mildvan
compound		source
Molecule: Protein (3-Ketosteroid Isomerase-19-Nortestostero Hemisuccinate); Chain: A, B Synonym: Ksi Ec: 5.3.3.1 Engineered: Yes Mutation: Yes Other_details: Ksi Complexed With 19-Nortestosterone-Hemisu Substrate Analog.		Organism_scientific: Comamonas Testosteroni Organism_taxid: 285 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_cell_line: Bl21de3 Expression_system_vector_type: Bacterial Expression_system_vector: E.Coli Expression_system_plasmid: Pet-25b Other_details: Pet-25b+Gene
method	Solution NMR
ligand	NTH	enzyme	Isomerase E.C.5.3.3.1 BRENDA
related structures	by homologous chain: 1ISK
Gene Ontology	Chain Function Process Component A, B
Primary reference	Solution structure of Delta 5-3-ketosteroid isomerase complexed with the steroid 19-nortestosterone hemisuccinate., Massiah MA, Abeygunawardana C, Gittis AG, Mildvan AS, Biochemistry 1998 Oct 20;37(42):14701-12. PMID:9778345

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (971 Kb) [Save to disk] Biological Unit Coordinates (1buq.pdb1.gz) 64 Kb LPC: Ligand-Protein Contacts for 1BUQ CSU: Contacts of Structural Units for 1BUQ Original NMR restraints for 1BUQ from PDB Retrieve 1BUQ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1BUQ from S2C, [Save to disk]

View 1BUQ in 3D

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Visual 3D analysis of 1BUQ

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1BUQ, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1buqa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1buqb_, 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: [1buq_A] [1buq] [1buq_B] SWISS-PROT database: [P00947] Domain organization of [SDIS_COMTE] by SWISSPFAM

Other resources with information on 1BUQ

Community annotation for 1BUQ at PDBWiki (http://pdbwiki.org) NMR Ensemble (OLDERADO: core, domain and representative structure database) MMDB (Entrez's Structure Database)

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