... ATnI130)252, and ATnI232)292did not migrate into the gels, while free ATnI-52K and ATnI1)128exhibited a band near the origin and at the middle of the gel, respectively. The bands corresponding to the ... SDS ⁄ PAGE. Lanes a and d, in the absence of both TnC and Ca2+; lanes b and e, in the presence of TnC and the absence of Ca2+; lanes c and f, in the presence of bothTnC and Ca2+. Ac, actin; ... interact with the N- and C-domains, respectively, of TnC [18,19]. The inhibitory region is known to interact with both the N- and C-domains, but preferentially with the C-domain [18,20,31]. In the...