Biological Assembly 1  

 3D View: Structure

Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Hetero 6-mer - A3B3 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 33.58 kDa 
• Atom Count: 2430 
• Modelled Residue Count: 309 
• Deposited Residue Count: 309 
• Unique protein chains: 2

1KAC

KNOB DOMAIN FROM ADENOVIRUS SEROTYPE 12 IN COMPLEX WITH DOMAIN 1 OF ITS CELLULAR RECEPTOR CAR

• DOI: 10.2210/pdb1KAC/pdb

• Classification: Viral protein/receptor
• Organism(s): Human adenovirus 12, Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-05-05 Released: 1999-11-24 
• Deposition Author(s): Bewley, M.C., Springer, K., Zhang, Y.B., Freimuth, P., Flanagan, J.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.250 
• R-Value Work: 0.220 
• R-Value Observed: 0.220 

Literature

Structural analysis of the mechanism of adenovirus binding to its human cellular receptor, CAR.

Bewley, M.C., Springer, K., Zhang, Y.B., Freimuth, P., Flanagan, J.M.

(1999) Science 286: 1579-1583

• PubMed: 10567268 
• DOI: 10.1126/science.286.5444.1579
• Primary Citation of Related Structures:  
  1KAC, 1NOB


• PubMed Abstract: 
  

Binding of virus particles to specific host cell surface receptors is known to be an obligatory step in infection even though the molecular basis for these interactions is not well characterized. The crystal structure of the adenovirus fiber knob domain in complex with domain I of its human cellular receptor, coxsackie and adenovirus receptor (CAR), is presented here. Surface-exposed loops on knob contact one face of CAR, forming a high-affinity complex. Topology mismatches between interacting surfaces create interfacial solvent-filled cavities and channels that may be targets for antiviral drug therapy. The structure identifies key determinants of binding specificity, which may suggest ways to modify the tropism of adenovirus-based gene therapy vectors.

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Organizational Affiliation: 

Biology Department, Brookhaven National Laboratory, Upton, NY 11973, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (FIBER KNOB PROTEIN)	A	185	Human adenovirus 12	Mutation(s): 0  Gene Names: L5
Find proteins for P36711 (Human adenovirus A serotype 12) Explore P36711  Go to UniProtKB:  P36711

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (COXSACKIE VIRUS AND ADENOVIRUS RECEPTOR)	B	124	Homo sapiens	Mutation(s): 0  Gene Names: CXADR, CAR
Find proteins for P78310 (Homo sapiens) Explore P78310  Go to UniProtKB:  P78310
NIH Common Fund Data Resources
PHAROS:  P78310 GTEx:  ENSG00000154639

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.250 
• R-Value Work: 0.220 
• R-Value Observed: 0.220 
• Space Group: P 4₃ 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 167.85	α = 90
b = 167.85	β = 90
c = 167.85	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CCP4	model building
AMoRE	phasing
CNS	refinement
CCP4	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-05-05 
• Released Date: 1999-11-24 
Deposition Author(s): Bewley, M.C., Springer, K., Zhang, Y.B., Freimuth, P., Flanagan, J.M.

Revision History  

• Version 1.0: 1999-11-24
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance