Effects of C-terminal deletions on cTnI-cTnT and cTni-cTnC interactions. Mammalian two-hydrid was utilized to determine disruptions in the interactions between different cTnI's and wild-type cTnT. * P < 0.05 (n=4-6). A) Effect of C-terminus deletion mutations in cTnI on interactions with cTnC. B) Interactions between cTnI deletion mutations and wild-type cTnC. * P < 0.05, ** P < 0.001 (n=4). C) Control experiments to determine the interactions between empty vectors and different combinations of pACT and pBIND vectors. A, cTnC (pACT) and wild-type cTnI (pBIND), B, pACT and pBIND, C, cTnC (pACT) and pBIND, pACT and wild-type cTnI (pBIND). Data are expressed as mean ± SEM.