1A5A	Lyase	date	Feb 12, 1998
title	Cryo-Crystallography Of A True Substrate, Indole-3-Glycerol Bound To A Mutant (Alphad60n) Tryptophan Synthase Alpha2bet Reveals The Correct Orientation Of Active Site Alpha Glu 49
authors	S.Rhee, E.W.Miles, D.R.Davies
compound		source
Molecule: Tryptophan Synthase (Alpha Chain) Chain: A Ec: 4.2.1.20 Engineered: Yes Mutation: Yes		Organism_scientific: Salmonella Typhimurium Organism_taxid: 602 Cell_line: Cb149 Gene: Trpatrpb Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_cell_line: Cb149 Expression_system_plasmid: Pstb7 Expression_system_gene: Trpatrpb
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_cell_line: Cb149 Expression_system_plasmid: Pstb7 Expression_system_gene: Trpatrpb
symmetry	Space Group: C 1 2 1	R_factor 0.238 R_Free 0.298
crystal cell	length a length b length c angle alpha angle beta angle gamma 183.500 59.400 67.300 90.00 94.60 90.00
method	X-Ray Diffraction	resolution	1.90 Å
ligand	K, PLP	enzyme	Lyase E.C.4.2.1.20 BRENDA
related structures	by homologous chain: 1BEU, 1CW2
Gene Ontology	Chain Function Process Component A B
Primary reference	Cryo-crystallography of a true substrate, indole-3-glycerol phosphate, bound to a mutant (alphaD60N) tryptophan synthase alpha2beta2 complex reveals the correct orientation of active site alphaGlu49., Rhee S, Miles EW, Davies DR, J Biol Chem 1998 Apr 10;273(15):8553-5. PMID:9535826

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (111 Kb) [Save to disk] Biological Unit Coordinates (1a5a.pdb1.gz) 208 Kb LPC: Ligand-Protein Contacts for 1A5A CSU: Contacts of Structural Units for 1A5A Likely Quarternary Molecular Structure file(s) for 1A5A Structure Factors (317 Kb) Retrieve 1A5A in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1A5A from S2C, [Save to disk] Re-refined 1a5a structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1A5A 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 1A5A

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 1A5A, from MSDmotif at EBI Genome occurence of 1A5A's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1a5aa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1a5ab_, 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: [1a5a_A] [1a5a] [1a5a_B] SWISS-PROT database: [P00929] [P0A2K1] Domain organization of [TRPA_SALTY] [TRPB_SALTY] by SWISSPFAM

Other resources with information on 1A5A

Community annotation for 1A5A at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

Movements, Movies and Images

Domain movements in 1A5A from the Database of Macromolecular Movements. Images from IMB Jena Image Library of Biological Macromolecules.

You may enter another PDB ID code

Go [Back], to the [PDB Lite page], to the [OCA Search page] or to the [PDB Home page]

---

OCA© by Jaime Prilusky, 1996-2014,2022 Bioinformatics Unit Weizmann Institute of Science

---