1A5S	Complex (Lyase Inhibitor)	date	Feb 17, 1998
title	Crystal Structure Of Wild-Type Tryptophan Synthase Complexed Fluoroindole Propanol Phosphate And L-Ser Bound As Amino Ac The Beta Site
authors	T.R.Schneider, E.Gerhardt, M.Lee, P.H.Liang, K.S.Anderson, I.Sch
compound		source
Molecule: Tryptophan Synthase (Alpha Chain) Chain: A Ec: 4.2.1.20 Engineered: Yes		Organism_scientific: Salmonella Typhimurium Organism_taxid: 602 Cell_line: Cb149 Gene: Trpatrpb Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Pstb7
Molecule: Tryptophan Synthase (Beta Chain) Chain: B Ec: 4.2.1.20 Engineered: Yes		Organism_scientific: Salmonella Typhimurium Organism_taxid: 602 Cell_line: Cb149 Gene: Trpatrpb Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Pstb7
symmetry	Space Group: C 1 2 1	R_factor 0.177 R_Free 0.247
crystal cell	length a length b length c angle alpha angle beta angle gamma 182.700 60.800 67.500 90.00 94.60 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	FIP, NA, PLP, SER	enzyme	Lyase E.C.4.2.1.20 BRENDA
related structures	by homologous chain: 1A50, 1WQ5, 2WSY
Gene Ontology	Chain Function Process Component A B
Primary reference	Loop closure and intersubunit communication in tryptophan synthase., Schneider TR, Gerhardt E, Lee M, Liang PH, Anderson KS, Schlichting I, Biochemistry 1998 Apr 21;37(16):5394-406. PMID:9548921

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (105 Kb) [Save to disk] Biological Unit Coordinates (1a5s.pdb1.gz) 198 Kb LPC: Ligand-Protein Contacts for 1A5S CSU: Contacts of Structural Units for 1A5S Likely Quarternary Molecular Structure file(s) for 1A5S Structure Factors (248 Kb) Retrieve 1A5S in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A5S from S2C, [Save to disk] Re-refined 1a5s structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1A5S 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 1A5S

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 1A5S, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a5sa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1a5sb_, 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: [1a5s_B] [1a5s_A] [1a5s] SWISS-PROT database: [P00929] [P0A2K1] Domain organization of [TRPA_SALTY] [TRPB_SALTY] by SWISSPFAM

Other resources with information on 1A5S

Community annotation for 1A5S at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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