3RAC

Crystal Structure of Histidine--tRNA ligase subunit from Alicyclobacillus acidocaldarius subsp. acidocaldarius DSM 446.

• PDB DOI: https://doi.org/10.2210/pdb3RAC/pdb

• Classification: LIGASE
• Organism(s): Alicyclobacillus acidocaldarius subsp. acidocaldarius DSM 446
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2011-03-27 Released: 2011-09-14 
• Deposition Author(s): Wu, R., Bedean, J., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 
  0.239 (Depositor), 0.260 (DCC) 
• R-Value Work: 
  0.189 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.192 (Depositor) 

Literature

Crystal Strucutre of Histidine--tRNA ligase subunit from Alicyclobacillus acidocaldarius subsp. acidocaldarius DSM 446.

Wu, R., Bedean, J., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

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)

Macromolecule Content

• Total Structure Weight: 41.41 kDa 
• Atom Count: 2,759 
• Modelled Residue Count: 339 
• Deposited Residue Count: 373 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Histidine-tRNA ligase	A	373	Alicyclobacillus acidocaldarius subsp. acidocaldarius DSM 446	Mutation(s): 0  Gene Names: Aaci_0923 EC: 6.1.1.21
UniProt
Find proteins for C8WUX4 (Alicyclobacillus acidocaldarius subsp. acidocaldarius (strain ATCC 27009 / DSM 446 / BCRC 14685 / JCM 5260 / KCTC 1825 / NBRC 15652 / NCIMB 11725 / NRRL B-14509 / 104-IA)) Explore C8WUX4  Go to UniProtKB:  C8WUX4

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LMR	B [auth A]	(2S)-2-hydroxybutanedioic acid C4 H6 O5 BJEPYKJPYRNKOW-REOHCLBHSA-N
GOL	G [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ACY	E [auth A], F [auth A]	ACETIC ACID C2 H4 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-N
NA	C [auth A], D [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free:  0.239 (Depositor), 0.260 (DCC) 
• R-Value Work:  0.189 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.192 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.276	α = 90
b = 69.276	β = 90
c = 177.643	γ = 90

Software Package:

Software Name	Purpose
HKL-3000	data collection
MLPHARE	phasing
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-09-14 
Deposition Author(s): Wu, R., Bedean, J., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2011-09-14
  Type: Initial release
  
• Version 1.1: 2012-09-12
  Changes: Database references, Structure summary
• Version 1.2: 2020-09-09
  Changes: Database references, Derived calculations, Structure summary
• Version 1.3: 2024-02-21
  Changes: Data collection, Database references