4ECA	Hydrolase	date	Feb 21, 1997
title	Asparaginase From E. Coli, Mutant T89v With Covalently Bound
authors	G.J.Palm, J.Lubkowski, A.Wlodawer
compound		source
Molecule: L-Asparagine Amidohydrolase Chain: A, B, C, D Synonym: Asparaginase Ec: 3.5.1.1 Engineered: Yes Mutation: Yes Other_details: Thr 12 Is Acylated By Aspartic Acid In Each		Organism_scientific: Escherichia Coli Organism_taxid: 83333 Strain: K12 Cellular_location: Periplasmatic Gene: Ansb Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Cu1783 Expression_system_cellular_location: Periplasmatic Expression_system_plasmid: Ptwe1 Expression_system_gene: Ansb
symmetry	Space Group: P 21 21 21	R_factor 0.181 R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 95.000 126.200 155.700 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	AEI	enzyme	Hydrolase E.C.3.5.1.1 BRENDA
related structures	by homologous chain: 1JAZ, 1NNS
Gene Ontology	Chain Function Process Component A, D, C, B
Primary reference	A covalently bound catalytic intermediate in Escherichia coli asparaginase: crystal structure of a Thr-89-Val mutant., Palm GJ, Lubkowski J, Derst C, Schleper S, Rohm KH, Wlodawer A, FEBS Lett 1996 Jul 22;390(2):211-6. PMID:8706862

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (211 Kb) [Save to disk] Biological Unit Coordinates (4eca.pdb1.gz) 206 Kb LPC: Ligand-Protein Contacts for 4ECA CSU: Contacts of Structural Units for 4ECA Likely Quarternary Molecular Structure file(s) for 4ECA Structure Factors (600 Kb) Retrieve 4ECA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 4ECA from S2C, [Save to disk] Re-refined 4eca structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 4ECA 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 4ECA

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 4ECA, from MSDmotif at EBI Genome occurence of 4ECA's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d4ecaa_, region A [Jmol] [rasmolscript] [script source]     - Domain d4ecab_, region B [Jmol] [rasmolscript] [script source]     - Domain d4ecac_, region C [Jmol] [rasmolscript] [script source]     - Domain d4ecad_, region D [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: [4eca] [4eca_D] [4eca_A] [4eca_C] [4eca_B] SWISS-PROT database: [P00805] Domain organization of [ASPG2_ECOLI] by SWISSPFAM Domain found in 4ECA: [Asparaginase ] by SMART

Other resources with information on 4ECA

Community annotation for 4ECA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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