Title : Effect of rigor and cycling cross-bridges on the structure of troponin C and on the Ca2+ affinity of the Ca2+-specific regulatory sites in skinned rabbit psoas fibers.

Pub. Date : 1987 Oct 5

PMID : 3654633






3 Functional Relationships(s)
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1 The flourescence of incorporated dansylaziridine-labeled TnC was enhanced by the binding of Ca2+ to the Ca2+-specific (regulatory) sites of TnC and was measured simultaneously with force (Zot, H.G., Guth, K., and Potter, J.D. dansylaziridine tenascin Oryctolagus cuniculus
2 The flourescence of incorporated dansylaziridine-labeled TnC was enhanced by the binding of Ca2+ to the Ca2+-specific (regulatory) sites of TnC and was measured simultaneously with force (Zot, H.G., Guth, K., and Potter, J.D. dansylaziridine tenascin Oryctolagus cuniculus
3 Various myosin cross-bridge states also altered the fluorescence of dansylaziridine-labeled TnC in the filament, with cycling cross-bridges having a greater effect than rigor cross-bridges; and in both cases, there was an additional effect of Ca2+. dansylaziridine tenascin Oryctolagus cuniculus