1UBC

Structure of Reca Protein

• PDB DOI: https://doi.org/10.2210/pdb1UBC/pdb

• Classification: RECOMBINATION
• Organism(s): Mycolicibacterium smegmatis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-04-04 Released: 2003-07-22 
• Deposition Author(s): Datta, S., Krishna, R., Ganesh, N., Chandra, N.R., Muniyappa, K., Vijayan, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.80 Å
• R-Value Free: 0.308 
• R-Value Work: 0.242 
• R-Value Observed: 0.242 

Starting Model: experimental

Literature

Crystal Structures of Mycobacterium smegmatis RecA and Its Nucleotide Complexes

Datta, S., Krishna, R., Ganesh, N., Chandra, N.R., Muniyappa, K., Vijayan, M.

(2003) J Bacteriol 185: 4280-4284

• PubMed: 12837805 
• DOI: https://doi.org/10.1128/JB.185.14.4280-4284.2003
• Primary Citation of Related Structures:  
  1UBC, 1UBE, 1UBF, 1UBG


• PubMed Abstract: 
  

  The crystal structures of Mycobacterium smegmatis RecA (RecA(Ms)) and its complexes with ADP, ATPgammaS, and dATP show that RecA(Ms) has an expanded binding site like that in Mycobacterium tuberculosis RecA, although there are small differences between the proteins in their modes of nucleotide binding. Nucleotide binding is invariably accompanied by the movement of Gln 196, which appears to provide the trigger for transmitting the effect of nucleotide binding to the DNA-binding loops. These observations provide a framework for exploring the known properties of the RecA proteins.

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Organizational Affiliation: 

Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560 012, India.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 37.34 kDa 
• Atom Count: 2,246 
• Modelled Residue Count: 303 
• Deposited Residue Count: 349 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RecA	A	349	Mycolicibacterium smegmatis	Mutation(s): 0
UniProt
Find proteins for Q59560 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155)) Explore Q59560  Go to UniProtKB:  Q59560

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.80 Å
• R-Value Free: 0.308 
• R-Value Work: 0.242 
• R-Value Observed: 0.242 
• Space Group: P 6₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 103.441	α = 90
b = 103.441	β = 90
c = 71.765	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-07-22 
Deposition Author(s): Datta, S., Krishna, R., Ganesh, N., Chandra, N.R., Muniyappa, K., Vijayan, M.

Revision History  

• Version 1.0: 2003-07-22
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-10-25
  Changes: Data collection, Database references, Refinement description