1XFF	Transferase	date	Sep 14, 2004
title	Glutaminase Domain Of Glucosamine 6-Phosphate Synthase Compl Glutamate
authors	M.N.Isupov, A.Teplyakov
compound		source
Molecule: Glucosamine--Fructose-6-Phosphate Aminotransferas [Isomerizing]; Chain: A, B Fragment: Glutaminase Domain Synonym: Hexosephosphate Aminotransferase; D-Fructose-6-Pho Amidotransferase; Gfat; L-Glutamine-D-Fructose-6-Phosphate Amidotransferase; Glucosamine-6-Phosphate Synthase; Ec: 2.6.1.16 Engineered: Yes Other_details: Inhibited By L-Glutamate		Organism_scientific: Escherichia Coli Organism_taxid: 562 Strain: 3000hfr Atcc: 25257 Gene: Glms Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pgm10a
symmetry	Space Group: P 21 21 21	R_factor 0.161 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 70.380 82.520 86.050 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.80 Å
ligand	ACT, GLU, NA	enzyme	Transferase E.C.2.6.1.16 BRENDA
note	1XFF supersedes 1GDO
related structures	by homologous chain: 1XFG
Primary reference	Substrate binding is required for assembly of the active conformation of the catalytic site in Ntn amidotransferases: evidence from the 1.8 A crystal structure of the glutaminase domain of glucosamine 6-phosphate synthase., Isupov MN, Obmolova G, Butterworth S, Badet-Denisot MA, Badet B, Polikarpov I, Littlechild JA, Teplyakov A, Structure 1996 Jul 15;4(7):801-10. PMID:8805567

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (86 Kb) [Save to disk] Biological Unit Coordinates (1xff.pdb1.gz) 81 Kb LPC: Ligand-Protein Contacts for 1XFF CSU: Contacts of Structural Units for 1XFF Likely Quarternary Molecular Structure file(s) for 1XFF Structure Factors (337 Kb) Retrieve 1XFF in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1XFF from S2C, [Save to disk] Re-refined 1xff structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1XFF 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 1XFF

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 1XFF, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1xffa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1xffb_, 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: [1xff_B] [1xff] [1xff_A] SWISS-PROT database: [P17169] Domain organization of [GLMS_ECOLI] by SWISSPFAM

Other resources with information on 1XFF

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

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