FUNCTION: Contractile protein that plays a role in heart development and function (PubMed:23365102, PubMed:32453731). Following phosphorylation, plays a role in cross-bridge cycling kinetics and cardiac muscle contraction by increasing myosin lever arm stiffness and promoting myosin head diffusion; ...
FUNCTION: Contractile protein that plays a role in heart development and function (PubMed:23365102, PubMed:32453731). Following phosphorylation, plays a role in cross-bridge cycling kinetics and cardiac muscle contraction by increasing myosin lever arm stiffness and promoting myosin head diffusion; as a consequence of the increase in maximum contraction force and calcium sensitivity of contraction force. These events altogether slow down myosin kinetics and prolong duty cycle resulting in accumulated myosins being cooperatively recruited to actin binding sites to sustain thin filament activation as a means to fine-tune myofilament calcium sensitivity to force (By similarity). During cardiogenesis plays an early role in cardiac contractility by promoting cardiac myofibril assembly (By similarity). {ECO:0000250|UniProtKB:P08733, ECO:0000269|PubMed:23365102, ECO:0000269|PubMed:32453731}.
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GO - Biological processes (BP):
cardiac muscle contraction [GO:0060048]; cardiac myofibril assembly [GO:0055003]; heart contraction [GO:0060047]; heart development [GO:0007507]; muscle cell fate specification [GO:0042694]; negative regulation of cell growth [GO:0030308]; positive regulation of the force of heart contraction [GO:00...
cardiac muscle contraction [GO:0060048]; cardiac myofibril assembly [GO:0055003]; heart contraction [GO:0060047]; heart development [GO:0007507]; muscle cell fate specification [GO:0042694]; negative regulation of cell growth [GO:0030308]; positive regulation of the force of heart contraction [GO:0098735]; regulation of striated muscle contraction [GO:0006942]; regulation of the force of heart contraction [GO:0002026]; ventricular cardiac muscle tissue morphogenesis [GO:0055010]
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GO - Molecular function (MF):
actin monomer binding [GO:0003785]; calcium ion binding [GO:0005509]; myosin heavy chain binding [GO:0032036]; structural constituent of muscle [GO:0008307]...
actin monomer binding [GO:0003785]; calcium ion binding [GO:0005509]; myosin heavy chain binding [GO:0032036]; structural constituent of muscle [GO:0008307]
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GO - Cellular component (CC):
A band [GO:0031672]; cardiac myofibril [GO:0097512]; cytoplasm [GO:0005737]; cytoskeleton [GO:0005856]; cytosol [GO:0005829]; myofibril [GO:0030016]; myosin complex [GO:0016459]; sarcomere [GO:0030017]...
A band [GO:0031672]; cardiac myofibril [GO:0097512]; cytoplasm [GO:0005737]; cytoskeleton [GO:0005856]; cytosol [GO:0005829]; myofibril [GO:0030016]; myosin complex [GO:0016459]; sarcomere [GO:0030017]
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