Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 4.33 kDa 
• Atom Count: 302 
• Modelled Residue Count: 40 
• Deposited Residue Count: 40 
• Unique protein chains: 1

1GP8

NMR SOLUTION STRUCTURE OF THE COAT PROTEIN-BINDING DOMAIN OF BACTERIOPHAGE P22 SCAFFOLDING PROTEIN

• PDB DOI: 10.2210/pdb1GP8/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Salmonella virus P22
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-05-11 Released: 1999-05-17 
• Deposition Author(s): Sun, Y., Parker, M.H., Weigele, P., Casjens, S., Prevelige Jr., P.E., Krishna, N.R.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 35 
• Selection Criteria: LEAST RESTRAINT VIOLATION 

Literature

Structure of the coat protein-binding domain of the scaffolding protein from a double-stranded DNA virus.

Sun, Y., Parker, M.H., Weigele, P., Casjens, S., Prevelige Jr., P.E., Krishna, N.R.

(2000) J Mol Biol 297: 1195-1202

• PubMed: 10764583 
• DOI: 10.1006/jmbi.2000.3620
• Primary Citation of Related Structures:  
  1GP8, 2GP8


• PubMed Abstract: 
  

Scaffolding proteins are required for high fidelity assembly of most high T number dsDNA viruses such as the large bacteriophages, and the herpesvirus family. They function by transiently binding and positioning the coat protein subunits during capsid assembly. In both bacteriophage P22 and the herpesviruses the extreme scaffold C terminus is highly charged, is predicted to be an amphipathic alpha-helix, and is sufficient to bind the coat protein, suggesting a common mode of action. NMR studies show that the coat protein-binding domain of P22 scaffolding protein exhibits a helix-loop-helix motif stabilized by a hydrophobic core. One face of the motif is characterized by a high density of positive charges that could interact with the coat protein through electrostatic interactions. Results from previous studies with a truncation fragment and the observed salt sensitivity of the assembly process are explained by the NMR structure.

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Organizational Affiliation: 

Comprehensive Cancer Center, Birmingham, AL, 35294, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (SCAFFOLDING PROTEIN)	A	40	Salmonella virus P22	Mutation(s): 0  Gene Names: 8
UniProt
Find proteins for P26748 (Salmonella phage P22) Explore P26748  Go to UniProtKB:  P26748

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 35 
• Selection Criteria: LEAST RESTRAINT VIOLATION 
• OLDERADO: 1GP8 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-05-11 
• Released Date: 1999-05-17 
Deposition Author(s): Sun, Y., Parker, M.H., Weigele, P., Casjens, S., Prevelige Jr., P.E., Krishna, N.R.

Revision History  

• Version 1.0: 1999-05-17
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2022-02-23
  Changes: Database references, Derived calculations