... (hCt) analogues reveal a critical role of sequence 17–21 for the oligomerization state and bioactivity of hCt Athanasios Kazantzis1, Michaela Waldner1, John W. Taylor2 and Aphrodite Kapurniotu11Physiological-chemical ... 3,respectively, and als o a linear control peptide for 1a ,analogue 1b.Conformational analyses by CD: studies of hCt and the analogues in aqueous buffer, pH 7.4CD spectra of hCt and analogues 1–6 ... tudies, the receptor binding a nities, and the hypocalcemic potencies in vivo of hCt, sCt, analogues 1–6 and/ or the partial sequence analogues 1a, 1b, 2a, and 3a. The CD data of the partial sequence...