Table 1. Peptide numbering, sequence, inhibition constants, and binding energy as determined by fluorescence polarization (FP). The variable residues at the p+3 position are highlighted in bold. IC₅₀ values were obtained from competitive binding experiments, converted to K_i according to the Coleska-Wang equation⁴², and ΔG calculated from the relationship, ΔG = RT ln K_i. Each value represents an average of 4 separate experiments.

#	Peptide Sequence	Ki (μM)	ΔG (kcal·mol−1)
1	pYTPEP	1.3 ± 0.6	−7.95 ± 0.21
2	pYTPAP	18.1 ± 5.7	−6.53 ± 0.22
3	pYTPPP	5.0 ± 2.2	−7.32 ± 0.30