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identifier: 1852738
description:
epitope description:Y44, K45, K87, R123, T125, E126, D131, G132, H133, H134, S135, E136, D147, T149, R153, R155, Y174, E176, S177, K178, A179, H180
antigen name:Sonic hedgehog protein
host organism:Mus musculus
antibody name:ch5E1
aggregation:
instance of dataset
availability:
available
primaryPublications: 20504762
authorizations:
registration not required
accessURL: http://www.iedb.org/reference/1022197
landingPage: http://www.iedb.org/assay/1852738
type:
Literature
publicationVenue:
J Biol Chem
dates:
2010
study type: b cell assays
subject species: Homo sapiens
fullName:
Henry R Maun
Xiaohui Wen
Andreas Lingel
Frederic J de Sauvage
Robert A Lazarus
Suzie J Scales
Sarah G Hymowitz
method:
bio-layer interferometry assay
name:
Hedgehog pathway antagonist 5E1 binds hedgehog at the pseudo-active site.
description:
Epitope residues are calculated from the structure [PDB: 3MXW] as the antigen residues at 4 Å
distance from the antibody.
The epitope specific Fab ch5E1 bound to Sonic hedgehog (Shh) with an affinity of 6.94 nM, as measured by biolayer interferometry. Addition of Ca2+ improved the affinity to 1.12 nM and Ca2+ plus Zn2+ further improved the affinity to 0.31 nM. The increase in affinity was mainly due to a decrease in the dissociation rate constant.

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