11AS	Ligase	date	Dec 02, 1997
title	Asparagine Synthetase Mutant C51a, C315a Complexed With L-As
authors	T.Nakatsu, H.Kato, J.Oda
compound		source
Molecule: Asparagine Synthetase Chain: A, B Ec: 6.3.1.1 Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli K12 Organism_taxid: 83333 Strain: K-12 Gene: Asna Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Jm109 Expression_system_vector: Puc18 Expression_system_plasmid: Punad37 Cys-Free Expression_system_gene: Asna
symmetry	Space Group: P 1 21 1	R_factor 0.155 R_Free 0.253
crystal cell	length a length b length c angle alpha angle beta angle gamma 52.900 126.200 52.780 90.00 105.34 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand	ASN	enzyme	Ligase E.C.6.3.1.1 BRENDA
related structures	by homologous chain: 12AS
Gene Ontology	Chain Function Process Component A, B
Primary reference	Crystal structure of asparagine synthetase reveals a close evolutionary relationship to class II aminoacyl-tRNA synthetase., Nakatsu T, Kato H, Oda J, Nat Struct Biol 1998 Jan;5(1):15-9. PMID:9437423

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (106 Kb) [Save to disk] Biological Unit Coordinates (11as.pdb1.gz) 101 Kb LPC: Ligand-Protein Contacts for 11AS CSU: Contacts of Structural Units for 11AS Likely Quarternary Molecular Structure file(s) for 11AS Retrieve 11AS in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 11AS from S2C, [Save to disk]

View 11AS 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 11AS

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 11AS, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d11asa_, region A [Jmol] [rasmolscript] [script source]     - Domain d11asb_, 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: [11as_B] [11as] [11as_A] SWISS-PROT database: [P00963] Domain organization of [ASNA_ECOLI] by SWISSPFAM

Other resources with information on 11AS

Community annotation for 11AS at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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