Table 1.

Binding Affinity of the Breast Tissue-Specific Conjugate (3B) for APaseP^a

Peptide Conjugate	KD (M)
(3B)	723 ± 3 nM
Bradykinin	15.3 ± 8 μM
(1B)	430 ± 5 nM
Brain Homing Peptide	NB

^aLinked reactions were performed with the breast tissue specific conjugate injected over a C1-sensor chip with immobilized XPNEP1, APaseP human recombinant protein. A 0–20 μM titration of the breast tissue specific conjugate (3B) in solution was injected over the prepared biosensor surface at a flow rate of 100 μL/min. The K_D results are presented as mean ± SEM. NB = no binding