Discovery of 3-Aminobenzyloxycarbonyl as an N-Terminal Group Conferring High Affinity to the Minimal Phosphopeptide Sequence Recognized by the Grb2-SH2 Domain
- 1 October 1997
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of Medicinal Chemistry
- Vol. 40 (22) , 3551-3556
- https://doi.org/10.1021/jm9702185
Abstract
The observation that anthranilic acid as N-terminal group produces a dramatic increase of the binding affinity of the phosphopeptide sequence Glu-pTyr-Ile-Asn for the Grb2-SH2 domain was rationalized by molecular modeling. The model, which invokes a stacking interaction between the N-terminal group and the SH2 domain residue Arg αA2, was subsequently used to design the 3-aminobenzyloxycarbonyl N-terminal group. The latter confers high affinity (IC50 = 65 nM in an ELISA assay) to the minimal sequence pTyr-Ile-Asn recognized by the Grb2-SH2 domain.Keywords
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