1TTQ	Carbon-Oxygen Lyase	date	Oct 11, 1995
title	Tryptophan Synthase (E.C.4.2.1.20) In The Presence Of Potass Room Temperature
authors	S.Rhee, K.Parris, S.Ahmed, E.W.Miles, D.R.Davies
compound		source
Molecule: Tryptophan Synthase Chain: A Ec: 4.2.1.20 Engineered: Yes Other_details: Structure In The Presence Of Potassium		Organism_scientific: Salmonella Typhimurium Organism_taxid: 602 Strain: Tb2211 Gene: Trpatrpbtrpc Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Psth8 Expression_system_gene: Trpatrpbtrpc
Molecule: Tryptophan Synthase Chain: B Ec: 4.2.1.20 Engineered: Yes Other_details: Structure In The Presence Of Potassium		Organism_scientific: Salmonella Typhimurium Organism_taxid: 602 Strain: Tb2211 Gene: Trpatrpbtrpc Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: Psth8 Expression_system_gene: Trpatrpbtrpc
symmetry	Space Group: C 1 2 1	R_factor 0.217 R_Free 0.285
crystal cell	length a length b length c angle alpha angle beta angle gamma 185.000 61.300 67.700 90.00 94.70 90.00
method	X-Ray Diffraction	resolution	2.00 Å
ligand	K, PLP	enzyme	Lyase E.C.4.2.1.20 BRENDA
related structures	by homologous chain: 1A5B, 1CW2
Gene Ontology	Chain Function Process Component A B
Primary reference	Exchange of K+ or Cs+ for Na+ induces local and long-range changes in the three-dimensional structure of the tryptophan synthase alpha2beta2 complex., Rhee S, Parris KD, Ahmed SA, Miles EW, Davies DR, Biochemistry 1996 Apr 2;35(13):4211-21. PMID:8672457

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (107 Kb) [Save to disk] Biological Unit Coordinates (1ttq.pdb1.gz) 201 Kb LPC: Ligand-Protein Contacts for 1TTQ CSU: Contacts of Structural Units for 1TTQ Likely Quarternary Molecular Structure file(s) for 1TTQ Structure Factors (216 Kb) Retrieve 1TTQ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1TTQ from S2C, [Save to disk] Re-refined 1ttq structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1TTQ 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 1TTQ

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 1TTQ, from MSDmotif at EBI Genome occurence of 1TTQ's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ttqa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1ttqb_, 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: [1ttq_B] [1ttq] [1ttq_A] SWISS-PROT database: [P00929] [P0A2K1] Domain organization of [TRPA_SALTY] [TRPB_SALTY] by SWISSPFAM

Other resources with information on 1TTQ

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

Movements, Movies and Images

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

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