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identifier: 1903119
description:
epitope description:5-[(2-aminobenzimidazol-6-yl)amino]-5-oxopentanoic acid zwitterion
host organism:Mus musculus
antibody name:13G5 Glu(L34)Gln
aggregation:
instance of dataset
availability:
available
primaryPublications: 19846764
authorizations:
registration not required
accessURL: http://www.iedb.org/reference/1019658
landingPage: http://www.iedb.org/assay/1903119
type:
Literature
publicationVenue:
Proc Natl Acad Sci U S A
dates:
2009
study type: b cell assays
subject species:
fullName:
Erik W Debler
Roger Mü
ller
Donald Hilvert
Ian A Wilson
method:
x-ray crystallography
name:
An aspartate and a water molecule mediate efficient acid-base catalysis in a tailored antibody pocket.
description:
The crystal structure of catalytic antibody Fab 13G5 Glu(L34)Gln in complex with the epitope was determined by molecular replacement. Position 34 of the antibody light chain is in the active site, but does not directly interact with bound ligand and is not essential. The ionization state of the residue nevertheless affects antibody activity. Antibody mutant 13G5 Glu(L34)Gln has a broader pH optimum for the elimination reaction.

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