when the reconstituted troponin was complexed with f-actin-tropomyosin , flash irradiation of the reconstituted then filament yielded the cross-linked products of tnc-tni , tni-tnt , and tni-actin in the presence ans absence of calcium , indicating that tni is in contact with tnc , tnt , and actin in the thin filament complex irrespective of calcium concentration .
C0041199
troponin
C0077404
tnt