1B4X	Transferase	date	Dec 30, 1998
title	Aspartate Aminotransferase From E. Coli, C191s Mutation, Wit Maleate
authors	C.J.Jeffery, L.M.Gloss, G.A.Petsko, D.Ringe
compound		source
Molecule: Aspartate Aminotransferase Chain: A Fragment: Complete Subunit Ec: 2.6.1.1 Engineered: Yes Mutation: Yes Other_details: Pyridoxal Phosphate Cofactor Covalently Boun 258 Via Schiff Base Linkage		Organism_scientific: Escherichia Coli Organism_taxid: 562 Cellular_location: Cytoplasm Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_cellular_location: Cytoplasm Expression_system_vector_type: Plasmid
symmetry	Space Group: C 2 2 21	R_factor 0.207 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 157.130 86.690 79.870 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.45 Å
ligand	MAE, PLP	enzyme	Transferase E.C.2.6.1.1 BRENDA
related structures	by homologous chain: 1CZC, 5EAA
Gene Ontology	Chain Function Process Component A
Primary reference	The role of residues outside the active site: structural basis for function of C191 mutants of Escherichia coli aspartate aminotransferase., Jeffery CJ, Gloss LM, Petsko GA, Ringe D, Protein Eng 2000 Feb;13(2):105-12. PMID:10708649

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (67 Kb) [Save to disk] Biological Unit Coordinates (1b4x.pdb1.gz) 124 Kb LPC: Ligand-Protein Contacts for 1B4X CSU: Contacts of Structural Units for 1B4X Likely Quarternary Molecular Structure file(s) for 1B4X Retrieve 1B4X in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1B4X from S2C, [Save to disk]

View 1B4X 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 1B4X

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1B4X, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1b4xa_, region A [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: [1b4x_A] [1b4x] SWISS-PROT database: [P00509] Domain organization of [AAT_ECOLI] by SWISSPFAM

Other resources with information on 1B4X

Community annotation for 1B4X at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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