1HKL

FREE AND LIGANDED FORM OF AN ESTEROLYTIC CATALYTIC ANTIBODY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.68 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structures of the free and liganded form of an esterolytic catalytic antibody.

Wedemayer, G.J.Wang, L.H.Patten, P.A.Schultz, P.G.Stevens, R.C.

(1997) J Mol Biol 268: 390-400

  • DOI: 10.1006/jmbi.1997.0974
  • Primary Citation of Related Structures:  
    1HKL

  • PubMed Abstract: 
  • The crystal structure of the esterase catalytic antibody 48G7 has been determined in the presence of hapten at 2.0 A resolution and in the absence of hapten at 2.7 A resolution. The root-mean-square difference between the two structures is 0.6 A for ...

    The crystal structure of the esterase catalytic antibody 48G7 has been determined in the presence of hapten at 2.0 A resolution and in the absence of hapten at 2.7 A resolution. The root-mean-square difference between the two structures is 0.6 A for the variable domain and 0.7 A for the constant domain. Comparison of the active site shows that no significant changes occur upon hapten binding as main-chain and side-chain displacements are negligible. Complex formation occurs as hapten fits into a pre-formed pocket about 10 A deep. Although 151 water molecules were modeled into the 48G7-hapten structure, none are bound in the active site. Comparison of the 48G7 structures with those of other published ester hydrolysis antibodies illustrates an emerging theme used by esterolytic antibodies in binding their (nitro-)phenyl haptens and in hydrolysing their cognate esters and carbonates: hapten is bound with the aryl end buried deep in the binding pocket, and the phosphonate moiety is responsible for the majority of the binding energy to the antibody-hapten interaction.


    Related Citations: 
    • The Immunological Evolution of Catalysis
      Patten, P.A., Gray, N.S., Yang, P.L., Marks, C.B., Wedemayer, G.J., Boniface, J.J., Stevens, R.C., Schultz, P.G.
      (1996) Science 271: 1086
    • A Genetic Approach to the Generation of Antibodies with Enhanced Catalytic Activities
      Lesley, S.A., Patten, P.A., Schultz, P.G.
      (1993) Proc Natl Acad Sci U S A 90: 1160

    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Chemistry, University of California, Berkeley 94720, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
48G7 FABL214Homo sapiensMutation(s): 0 
Gene Names: IGKC
Find proteins for P01834 (Homo sapiens)
Explore P01834 
Go to UniProtKB:  P01834
NIH Common Fund Data Resources
PHAROS  P01834
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
48G7 FABH217Homo sapiensMutation(s): 0 
Gene Names: IGHG1
Find proteins for P01857 (Homo sapiens)
Explore P01857 
Go to UniProtKB:  P01857
NIH Common Fund Data Resources
PHAROS  P01857
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.68 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.184 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.69α = 90
b = 44.49β = 121.75
c = 84.95γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-03-12
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance