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Effects of troponin-I plus-C on the binding of troponin-T and its fragments to alpha-tropomyosin. Ca2+ sensitivity and cooperativity
1983
Journal of Biological Chemistry
The binding of troponin-I to tropomyosin, as well as its effects on the binding of troponin-T and its fragments T1 (residues 1-158) and T2 (residues 159-259) to tropomyosin, have been studied using immobilized alpha-tropomyosin. When applied alone, troponin-I exhibited weak interaction with tropomyosin and was eluted with a NaCl gradient at 0.12 M. Intact troponin-T was eluted at 0.40 M NaCl, while its fragment T1 was eluted from site 1 (near the COOH terminus of tropomyosin) at 0.32 M,
pmid:6822572
fatcat:nsnf5muahvfnroo6j7fxbyetji