1BM9 | pdb_00001bm9

REPLICATION TERMINATOR PROTEIN FROM BACILLUS SUBTILIS

• PDB DOI: https://doi.org/10.2210/pdb1BM9/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Bacillus subtilis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1998-07-29 Released: 1999-01-06 
• Deposition Author(s): Bussiere, D.E., Bastia, D., White, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 
  0.281 (Depositor) 
• R-Value Work: 
  0.206 (Depositor) 
• R-Value Observed: 
  0.206 (Depositor) 

Literature

Crystal structure of the replication terminator protein from B. subtilis at 2.6 A.

Bussiere, D.E., Bastia, D., White, S.W.

(1995) Cell 80: 651-660

• PubMed: 7867072 
• DOI: https://doi.org/10.1016/0092-8674(95)90519-7
• Primary Citation Related Structures: 
  1BM9


• PubMed Abstract: 
  

  The crystal structure of the replication terminator protein (RTP) of B. subtilis has been determined at 2.6 A resolution. As previously suggested by both biochemical and biophysical studies, the molecule exists as a symmetric dimer and is in the alpha + beta protein-folding class. The protein has several uncommon features, including an antiparallel coiled-coil, which serves as the dimerization domain, and both an alpha-helix and a beta-ribbon suitably positioned to interact with the major and minor grooves of B-DNA. A site has been identified on the surface of RTP that is biochemically and positionally suitable for interaction with the replication-specific helicase. Other features of the structure are consistent with the polar contrahelicase mechanism of the protein. A model of the interaction between RTP and its cognate DNA is presented.

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Organizational Affiliation: 
• Department of Microbiology, Duke University Medical Center, Durham, North Carolina 27710.

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,PQS (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,PQS (software)

Macromolecule Content 

• Total Structure Weight: 29.09 kDa 
• Atom Count: 2,183 
• Modeled Residue Count: 240 
• Deposited Residue Count: 244 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
REPLICATION TERMINATOR PROTEIN	A, B	122	Bacillus subtilis	Mutation(s): 0  Gene Names: RTP
UniProt
Find proteins for P0CI76 (Bacillus subtilis (strain 168)) Explore P0CI76  Go to UniProtKB:  P0CI76

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free:  0.281 (Depositor) 
• R-Value Work:  0.206 (Depositor) 
• R-Value Observed: 0.206 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 77.191	α = 90
b = 52.686	β = 90.52
c = 70.583	γ = 90

Software Package:

Software Name	Purpose
PHASES	phasing
CNS	refinement
R-AXIS	data reduction
R-AXIS	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-01-06 
Deposition Author(s): Bussiere, D.E., Bastia, D., White, S.

Revision History  

• Version 1.0: 1999-01-06
  Type: Initial release
  
• Version 1.1: 2008-03-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Structure summary