3I12

The crystal structure of the D-alanyl-alanine synthetase A from Salmonella enterica subsp. enterica serovar Typhimurium str. LT2

• PDB DOI: https://doi.org/10.2210/pdb3I12/pdb

• Classification: LIGASE
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2009-06-25 Released: 2009-08-18 
• Deposition Author(s): Zhang, R., Maltseva, N., Papazisi, L., Anderson, W., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.249 
• R-Value Work: 0.197 
• R-Value Observed: 0.200 

Literature

The crystal structure of the D-alanyl-alanine synthetase A from Salmonella enterica subsp. enterica serovar Typhimurium str. LT2

Zhang, R., Maltseva, N., Papazisi, L., Anderson, W., Joachimiak, A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 159.29 kDa 
• Atom Count: 11,104 
• Modelled Residue Count: 1,409 
• Deposited Residue Count: 1,456 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
D-alanine-D-alanine ligase A	A, B, C, D	364	Salmonella enterica subsp. enterica serovar Typhimurium	Mutation(s): 0  Gene Names: ddlA, STM0380 EC: 6.3.2.4
UniProt
Find proteins for P0A1F0 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P0A1F0  Go to UniProtKB:  P0A1F0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ADP	E [auth A], F [auth B], G [auth C], H [auth D]	ADENOSINE-5'-DIPHOSPHATE C10 H15 N5 O10 P2 XTWYTFMLZFPYCI-KQYNXXCUSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.249 
• R-Value Work: 0.197 
• R-Value Observed: 0.200 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.153	α = 90
b = 85.813	β = 90
c = 230.893	γ = 90

Software Package:

Software Name	Purpose
SBC-Collect	data collection
HKL-3000	phasing
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-08-18 
Deposition Author(s): Zhang, R., Maltseva, N., Papazisi, L., Anderson, W., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

Revision History  

• Version 1.0: 2009-08-18
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2024-02-21
  Changes: Data collection, Database references, Derived calculations