1A4J

DIELS ALDER CATALYTIC ANTIBODY GERMLINE PRECURSOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.229 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Immunological origins of binding and catalysis in a Diels-Alderase antibody.

Romesberg, F.E.Spiller, B.Schultz, P.G.Stevens, R.C.

(1998) Science 279: 1929-1933

  • DOI: 10.1126/science.279.5358.1929
  • Primary Citation of Related Structures:  
    1A4K, 1A4J

  • PubMed Abstract: 
  • The three-dimensional structure of an antibody (39-A11) that catalyzes a Diels-Alder reaction has been determined. The structure suggests that the antibody catalyzes this pericyclic reaction through a combination of packing and hydrogen-bonding interacti ...

    The three-dimensional structure of an antibody (39-A11) that catalyzes a Diels-Alder reaction has been determined. The structure suggests that the antibody catalyzes this pericyclic reaction through a combination of packing and hydrogen-bonding interactions that control the relative geometries of the bound substrates and electronic distribution in the dienophile. A single somatic mutation, serine-91 of the light chain to valine, is largely responsible for the increase in affinity and catalytic activity of the affinity-matured antibody. Structural and functional studies of the germ-line precursor suggest that 39-A11 and related antibodies derive from a family of germ-line genes that have been selected throughout evolution for the ability of the encoded proteins to form a polyspecific combining site. Germ line-encoded antibodies of this type, which can rapidly evolve into high-affinity receptors for a broad range of structures, may help to expand the binding potential associated with the structural diversity of the primary antibody repertoire.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
IMMUNOGLOBULIN, DIELS ALDER CATALYTIC ANTIBODY (LIGHT CHAIN) AL217Mus musculusMutation(s): 0 
Find proteins for P01834 (Homo sapiens)
Explore P01834 
Go to UniProtKB:  P01834
NIH Common Fund Data Resources
PHAROS:  P01834
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
IMMUNOGLOBULIN, DIELS ALDER CATALYTIC ANTIBODY (HEAVY CHAIN) BH219Mus musculusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.229 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 158.9α = 90
b = 49.33β = 108.74
c = 145γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-05-13
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance