Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - ABC Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer -A2B 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 60494.20 
• Atom Count: 4245 
• Residue Count: 554 
• Unique protein chains: 3

1XGR

Structure for antibody HyHEL-63 Y33I mutant complexed with hen egg lysozyme

• DOI: 10.2210/pdb1XGR/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Gallus gallus
• Expression System: Escherichia coli


• Deposited: 2004-09-17 Released: 2005-09-06 
• Deposition Author(s): Li, Y., Huang, Y., Swaminathan, C.P., Smith-Gill, S.J., Mariuzza, R.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.1 Å
• R-Value Free: 0.304 
• R-Value Work: 0.250 

Literature

Magnitude of the hydrophobic effect at central versus peripheral sites in protein-protein interfaces

Li, Y., Huang, Y., Swaminathan, C.P., Smith-Gill, S.J., Mariuzza, R.A.

(2005) Structure 13: 297-307

• PubMed: 15698573 
• DOI: 10.1016/j.str.2004.12.012
• Primary Citation of Related Structures:  
  1XGU, 1XGT, 1XGQ, 1XGP


• PubMed Abstract: 
  

Hydrophobic interactions are essential for stabilizing protein-protein complexes, whose interfaces generally consist of a central cluster of hot spot residues surrounded by less important peripheral residues. According to the O-ring hypothesis, a condition for high affinity binding is solvent exclusion from interacting residues. This hypothesis predicts that the hydrophobicity at the center is significantly greater than at the periphery, which we estimated at 21 cal mol(-1) A(-2). To measure the hydrophobicity at the center, structures of an antigen-antibody complex where a buried phenylalanine was replaced by smaller hydrophobic residues were determined. By correlating structural changes with binding free energies, we estimate the hydrophobicity at this central site to be 46 cal mol(-1) A(-2), twice that at the periphery. This context dependence of the hydrophobic effect explains the clustering of hot spots at interface centers and has implications for hot spot prediction and the design of small molecule inhibitors.

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Organizational Affiliation: 

Center for Advanced Research in Biotechnology, W.M. Keck Laboratory for Structural Biology, University of Maryland Biotechnology Institute, 9600 Gudelsky Drive, Rockville, Maryland 20859, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
antibody kappa light chain	A	215	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
antibody kappa heavy chain	B	210	N/A	Mutation(s): 0
Protein Feature View is not available: No corresponding UniProt sequence found.

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
Lysozyme C	C	129	Gallus gallus	Mutation(s): 0  Gene Names: LYZ EC: 3.2.1.17
Find proteins for P00698 (Gallus gallus) Go to Gene View: LYZ Go to UniProtKB:  P00698

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.1 Å
• R-Value Free: 0.304 
• R-Value Work: 0.250 
• Space Group: P 4₂ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 90.316	α = 90.00
b = 90.316	β = 90.00
c = 150.592	γ = 90.00

Software Package:

Software Name	Purpose
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-09-17 
• Released Date: 2005-09-06 
• Deposition Author(s): Li, Y., Huang, Y., Swaminathan, C.P., Smith-Gill, S.J., Mariuzza, R.A.

Revision History 

• Version 1.0: 2005-09-06
  Type: Initial release
• Version 1.1: 2007-10-21
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2013-10-02
  Type: Source and taxonomy, Structure summary