Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

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

Macromolecule Content

• Total Structure Weight: 60.84 kDa 
• Atom Count: 4407 
• Modelled Residue Count: 543 
• Deposited Residue Count: 554 
• Unique protein chains: 1

1TYX

TITLE OF TAILSPIKE-PROTEIN

• DOI: 10.2210/pdb1TYX/pdb

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


• Deposited: 1996-07-26 Released: 1997-07-23 
• Deposition Author(s): Steinbacher, S., Huber, R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Work: 0.183 
• R-Value Observed: 0.183 

Literature

Crystal structure of phage P22 tailspike protein complexed with Salmonella sp. O-antigen receptors.

Steinbacher, S., Baxa, U., Miller, S., Weintraub, A., Seckler, R., Huber, R.

(1996) Proc Natl Acad Sci U S A 93: 10584-10588

• PubMed: 8855221 
• DOI: 10.1073/pnas.93.20.10584
• Primary Citation of Related Structures:  
  1TYU, 1TYX, 1TYW, 1TYV


• PubMed Abstract: 
  

The O-antigenic repeating units of lipopolysaccharides from Salmonella serogroups A, B, and D1 serve as receptors for the phage P22 tailspike protein, which also has receptor destroying endoglycosidase (endorhamnosidase) activity, integrating the functions of both hemagglutinin and neuraminidase in influenza virus. Crystal structures of the tailspike protein in complex with oligosaccharides, comprising two O-antigenic repeating units from Salmonella typhimurium, Salmonella enteritidis, and Salmonella typhi 253Ty were determined at 1.8 A resolution. The active-site topology with Asp-392, Asp-395, and Glu-359 as catalytic residues was identified. Kinetics of binding and cleavage suggest a role of the receptor destroying endorhamnosidase activity primarily for detachment of newly assembled phages.

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Related Citations: 

• Interactions of Phage P22 Tails with Their Cellular Receptor, Salmonella O-Antigen Polysaccharide
  Baxa, U., Steinbacher, S., Miller, S., Weintraub, A., Huber, R., Seckler, R.
  (1996) Biophys J 71: 2040

• Crystal Structure of P22 Tailspike Protein: Interdigitated Subunits in a Thermostable Trimer
  Steinbacher, S., Seckler, R., Miller, S., Steipe, B., Huber, R., Reinemer, P.
  (1994) Science 265: 383

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Organizational Affiliation: 

Abteilung Strukturforschung, Max-Planck-Institut für Biochemie, Martinsried, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TAILSPIKE PROTEIN	A	554	Salmonella virus P22	Mutation(s): 0  Gene Names: PHAGE P22 GENE 9, 9 EC: 3.2.1
Find proteins for P12528 (Salmonella phage P22) Explore P12528  Go to UniProtKB:  P12528

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
alpha-D-galactopyranose-(1-2)-[alpha-D-Abequopyranose-(1-3)]alpha-D-mannopyranose-(1-4)-alpha-L-rhamnopyranose-(1-3)-alpha-D-galactopyranose-(1-2)-[alpha-D-Abequopyranose-(1-3)]alpha-D-mannopyranose-(1-4)-alpha-L-rhamnopyranose	B	8		N/A

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Work: 0.183 
• R-Value Observed: 0.183 
• Space Group: P 2₁ 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 120.9	α = 90
b = 120.9	β = 90
c = 120.9	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
MOSFLM	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1996-07-26 
• Released Date: 1997-07-23 
Deposition Author(s): Steinbacher, S., Huber, R.

Revision History  

• Version 1.0: 1997-07-23
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Other, Structure summary