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Proteins of the Troponin Complex
Laboratory Medicine, 1992 The troponin complex is a group of three protein subunits located on the thin filament of the contractile apparatus. These three subunits—troponin T, troponin I, and troponin C—different in genetic and protein structure, act together to regulate muscle contraction.
H. Katus +3 more
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Protein kinase C phosphomimetics alter thin filament Ca2+ binding properties. [PDF]
PLoS ONE, 2014 Adrenergic stimulation modulates cardiac function by altering the phosphorylation status of several cardiac proteins. The Troponin complex, which is the Ca(2+) sensor for cardiac contraction, is a hot spot for adrenergic phosphorylation. While the effect
Bin Liu +3 more
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Hypertrophic Cardiomyopathy Mutations of Troponin Reveal Details of Striated Muscle Regulation
Frontiers in Physiology, 2022 Striated muscle contraction is inhibited by the actin associated proteins tropomyosin, troponin T, troponin I and troponin C. Binding of Ca2+ to troponin C relieves this inhibition by changing contacts among the regulatory components and ultimately ...
J. M. Chalovich, L. Zhu, D. Johnson
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Frontiers in Physiology, 2022 Small molecule cardiac troponin activators could potentially enhance cardiac muscle contraction in the treatment of systolic heart failure. We designed a small molecule, RPI-194, to bind cardiac/slow skeletal muscle troponin (Cardiac muscle and slow ...
Zabed Mahmud +13 more
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NMR analysis of cardiac troponin C‐troponin I complexes: effects of phosphorylation [PDF]
FEBS Letters, 1999 Phosphorylation of the cardiac specific amino‐terminus of troponin I has been demonstrated to reduce the Ca2+ affinity of the cardiac troponin C regulatory site. Recombinant N‐terminal cardiac troponin I proteins, cardiac troponin I(33–80), cardiac troponin I(1–80), cardiac troponin I(1–80)DD and cardiac troponin I(1–80)pp, phosphorylated by protein ...
Finley, Natosha +10 more
openaire +3 more sources
Monoclonal Antibodies as Probes to Study Ligand-Induced Conformations of Troponin Subunits
Frontiers in Physiology, 2022 Striated muscle contraction and relaxation is regulated by Ca2+ at the myofilament level via conformational modulations of the troponin complex. To understand the structure–function relationship of troponin in normal muscle and in myopathies, it is ...
Monica Rasmussen +2 more
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Scientific Reports, 2023 The large unmet demand for new heart failure therapeutics is widely acknowledged. Over the last decades the contractile myofilaments themselves have emerged as an attractive target for the development of new therapeutics for both systolic and diastolic ...
Priyanka Parijat +6 more
doaj +1 more source
Frontiers in Medicine, 2022 BackgroundChronic kidney disease has emerged as a significant independent risk factor for cardiovascular disease. Cardiovascular calcification is an active process involving a complex interaction of inducers and inhibitors.
Kamal M. Okasha +17 more
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The Solution Structure of a Cardiac Troponin C−Troponin I−Troponin T Complex Shows a Somewhat Compact Troponin C Interacting with an Extended Troponin I−Troponin T Component [PDF]
Biochemistry, 2002 We have investigated the structure of the cTnC-cTnI-cTnT(198-298) calcium-saturated, ternary cardiac troponin complex by small-angle scattering with contrast variation. Shape restoration was also applied to the scattering information resulting from the deuterated cTnC subunit, the unlabeled cTnI-cTnT(198-298) subunits, and the entire complex.
William T, Heller +4 more
openaire +2 more sources