Title : Cardiac troponin C as a target protein for a novel calcium sensitizing drug, levosimendan.

Pub. Date : 1995 Sep

PMID : 8523447






7 Functional Relationships(s)
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1 Cardiac troponin C as a target protein for a novel calcium sensitizing drug, levosimendan. Simendan troponin C1, slow skeletal and cardiac type Homo sapiens
2 The role of cardiac troponin C (cTnC) as a target protein for the calcium sensitization by levosimendan, pimobendan, MCI-154 and EMD 53998 was evaluated using purified recombinant human cTnC. Simendan troponin C1, slow skeletal and cardiac type Homo sapiens
3 The role of cardiac troponin C (cTnC) as a target protein for the calcium sensitization by levosimendan, pimobendan, MCI-154 and EMD 53998 was evaluated using purified recombinant human cTnC. Simendan troponin C1, slow skeletal and cardiac type Homo sapiens
4 Only levosimendan showed calcium-dependent and to a lesser extent magnesium-dependent retention in the cTnC column. Simendan troponin C1, slow skeletal and cardiac type Homo sapiens
5 The findings indicate that levosimendan binds both to the N-terminal and C-terminal domains of cTnC. Simendan troponin C1, slow skeletal and cardiac type Homo sapiens
6 In agreement with this, only levosimendan shifted the calcium-induced fluorescence curve of dansylated cTnC to the left. Simendan troponin C1, slow skeletal and cardiac type Homo sapiens
7 In conclusion, it is suggested that the mechanism of calcium sensitizing effect of levosimendan, unlike that of the other calcium sensitizers, is based on calcium-dependent binding to the N-terminal domain of cTnC. Simendan troponin C1, slow skeletal and cardiac type Homo sapiens