Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

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

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 139.91 kDa 
• Atom Count: 9,751 
• Modelled Residue Count: 1,202 
• Deposited Residue Count: 1,204 
• Unique protein chains: 2

 1F51

A TRANSIENT INTERACTION BETWEEN TWO PHOSPHORELAY PROTEINS TRAPPED IN A CRYSTAL LATTICE REVEALS THE MECHANISM OF MOLECULAR RECOGNITION AND PHOSPHOTRANSFER IN SINGAL TRANSDUCTION

• PDB DOI:  https://doi.org/10.2210/pdb1F51/pdb

• Classification: TRANSFERASE
• Organism(s): Bacillus subtilis
• Mutation(s): No 


• Deposited: 2000-06-11 Released: 2000-08-23 
• Deposition Author(s): Zapf, J., Sen, U., Madhusudan, M., Hoch, J.A., Varughese, K.I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.268 
• R-Value Work: 0.228 
• R-Value Observed: 0.229 

Literature

A transient interaction between two phosphorelay proteins trapped in a crystal lattice reveals the mechanism of molecular recognition and phosphotransfer in signal transduction.

Zapf, J., Sen, U., Madhusudan, M., Hoch, J.A., Varughese, K.I.

(2000) Structure 8: 851-862

• PubMed: 10997904 
• DOI: https://doi.org/10.1016/s0969-2126(00)00174-x
• Primary Citation of Related Structures:  
  1F51


• PubMed Abstract: 
  

Spo0F and Spo0B specifically exchange a phosphoryl group in a central step of the phosphorelay signal transduction system that controls sporulation in Bacilli. Spo0F belongs to the superfamily of response regulator proteins and is one of 34 such proteins in Bacillus subtilis. Spo0B is structurally similar to the phosphohistidine domain of histidine kinases, such as EnvZ, and exchanges a phosphoryl group between His30 and Asp54 on Spo0F. Information at the molecular level on the interaction between response regulators and phosphohistidine domains is necessary to develop a rationale for how phospho-signaling fidelity is maintained in two-component systems.

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Organizational Affiliation: 

Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SPORULATION INITIATION PHOSPHOTRANSFERASE B	A, B, C, D	182	Bacillus subtilis	Mutation(s): 0  EC: 2.7
UniProt
Find proteins for P06535 (Bacillus subtilis (strain 168)) Explore P06535  Go to UniProtKB:  P06535

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
SPORULATION INITIATION PHOSPHOTRANSFERASE F	E, F, G, H	119	Bacillus subtilis	Mutation(s): 0  EC: 2.7
UniProt
Find proteins for P06628 (Bacillus subtilis (strain 168)) Explore P06628  Go to UniProtKB:  P06628

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MG	I [auth E], J [auth F], K [auth H]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.268 
• R-Value Work: 0.228 
• R-Value Observed: 0.229 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 72.974	α = 90
b = 117.774	β = 90
c = 170.736	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-08-23 
Deposition Author(s): Zapf, J., Sen, U., Madhusudan, M., Hoch, J.A., Varughese, K.I.

Revision History  

• Version 1.0: 2000-08-23
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance