3I12	Ligase	date	Jun 25, 2009
title	The Crystal Structure Of The D-Alanyl-Alanine Synthetase A F Salmonella Enterica Subsp. Enterica Serovar Typhimurium Str
authors	R.Zhang, N.Maltseva, L.Papazisi, W.Anderson, A.Joachimiak, Center Structural Genomics Of Infectious Diseases (Csgid)
compound		source
Molecule: D-Alanine-D-Alanine Ligase A Chain: A, B, C, D Synonym: D-Alanylalanine Synthetase A, D-Ala-D-Ala Ligase A Ec: 6.3.2.4 Engineered: Yes		Organism_scientific: Salmonella Typhimurium Organism_taxid: 90371 Strain: Lt2' Gene: Ddla, Stm0380 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pmcsg19c
symmetry	Space Group: P 21 21 21	R_factor 0.197 R_Free 0.249
crystal cell	length a length b length c angle alpha angle beta angle gamma 85.153 85.813 230.893 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	ADP	enzyme	Ligase E.C.6.3.2.4 BRENDA
Gene Ontology	Chain Function Process Component A, D, C, B

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (225 Kb) [Save to disk] Biological Unit Coordinates (3i12.pdb1.gz) 111 Kb Biological Unit Coordinates (3i12.pdb2.gz) 111 Kb LPC: Ligand-Protein Contacts for 3I12 CSU: Contacts of Structural Units for 3I12 Structure Factors (648 Kb) Retrieve 3I12 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3I12 from S2C, [Save to disk] Re-refined 3i12 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3I12 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 3I12

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 3I12, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3i12_B] [3i12_C] [3i12_A] [3i12_D] [3i12] SWISS-PROT database: [P0A1F0] Domain organization of [DDLA_SALTY] by SWISSPFAM

Other resources with information on 3I12

Community annotation for 3I12 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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