Publication Date:
2007-06-01
Description:
We studied the interaction of the artificial 12-aa proline-rich peptide PD1 with the SH3 domain of the hematopoietic cell kinase Hck and the peptide's potency in competitively displacing HIV-1 Nef from the Hck SH3 domain. PD1 was obtained from a phage display screen and exhibits exceptional affinity for the Hck SH3 domain (Kd=0.23 μM). Competition experiments using NMR spectroscopy demonstrate that the peptide even displaces Nef from Hck SH3 and allow for estimation of the Nef-Hck SH3 dissociation constant (Kd=0.44 μM), the strongest SH3 ligand interaction known so far. Consequences of this study for novel antiviral concepts are discussed.
Print ISSN:
1431-6730
Electronic ISSN:
1437-4315
Topics:
Biology
,
Chemistry and Pharmacology
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