1OAS	Lyase	date	Jan 29, 1999
title	O-Acetylserine Sulfhydrylase From Salmonella Typhimurium
authors	P.Burkhard, G.S.J.Rao, E.Hohenester, K.D.Schnackerz, P.F.Cook, J.N.Jansonius
compound		source
Molecule: O-Acetylserine Sulfhydrylase Chain: A, B Synonym: Cystein Synthase Ec: 4.2.99.8 Engineered: Yes		Organism_scientific: Salmonella Typhimurium Organism_taxid: 602 Expression_system: Salmonella Typhimurium Expression_system_taxid: 602
symmetry	Space Group: P 21 21 21	R_factor 0.172 R_Free 0.200
crystal cell	length a length b length c angle alpha angle beta angle gamma 54.600 98.200 145.400 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	PLP	enzyme	Lyase E.C.4.2.99.8 BRENDA
related structures	by homologous chain: 1D6S, 1FCJ
Gene Ontology	Chain Function Process Component A, B
Primary reference	Three-dimensional structure of O-acetylserine sulfhydrylase from Salmonella typhimurium., Burkhard P, Rao GS, Hohenester E, Schnackerz KD, Cook PF, Jansonius JN, J Mol Biol 1998;283(1):121-33. PMID:9761678

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (108 Kb) [Save to disk] Biological Unit Coordinates (1oas.pdb1.gz) 103 Kb LPC: Ligand-Protein Contacts for 1OAS CSU: Contacts of Structural Units for 1OAS Likely Quarternary Molecular Structure file(s) for 1OAS Structure Factors (322 Kb) Retrieve 1OAS in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1OAS from S2C, [Save to disk] Re-refined 1oas structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1OAS 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 1OAS

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 1OAS, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1oasa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1oasb_, 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: [1oas] [1oas_B] [1oas_A] SWISS-PROT database: [P0A1E3] Domain organization of [CYSK_SALTY] by SWISSPFAM

Other resources with information on 1OAS

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

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Images from IMB Jena Image Library of Biological Macromolecules.

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