Artikel ; Online: Force and kinetics of fast and slow muscle myosin determined with a synthetic sarcomere-like nanomachine.
Communications biology
2024 Band 7, Heft 1, Seite(n) 361
Abstract: Myosin II is the muscle molecular motor that works in two bipolar arrays in each thick filament of the striated (skeletal and cardiac) muscle, converting the chemical energy into steady force and shortening by cyclic ATP-driven interactions with the ... ...
| Abstract | Myosin II is the muscle molecular motor that works in two bipolar arrays in each thick filament of the striated (skeletal and cardiac) muscle, converting the chemical energy into steady force and shortening by cyclic ATP-driven interactions with the nearby actin filaments. Different isoforms of the myosin motor in the skeletal muscles account for the different functional requirements of the slow muscles (primarily responsible for the posture) and fast muscles (responsible for voluntary movements). To clarify the molecular basis of the differences, here the isoform-dependent mechanokinetic parameters underpinning the force of slow and fast muscles are defined with a unidimensional synthetic nanomachine powered by pure myosin isoforms from either slow or fast rabbit skeletal muscle. Data fitting with a stochastic model provides a self-consistent estimate of all the mechanokinetic properties of the motor ensemble including the motor force, the fraction of actin-attached motors and the rate of transition through the attachment-detachment cycle. The achievements in this paper set the stage for any future study on the emergent mechanokinetic properties of an ensemble of myosin molecules either engineered or purified from mutant animal models or human biopsies. |
|---|---|
| Mesh-Begriff(e) | Animals ; Humans ; Rabbits ; Sarcomeres ; Muscle Contraction/physiology ; Myosins ; Muscle, Skeletal/physiology ; Protein Isoforms/chemistry |
| Chemische Substanzen | Myosins (EC 3.6.4.1) ; Protein Isoforms |
| Sprache | Englisch |
| Erscheinungsdatum | 2024-03-23 |
| Erscheinungsland | England |
| Dokumenttyp | Journal Article |
| ISSN | 2399-3642 |
| ISSN (online) | 2399-3642 |
| DOI | 10.1038/s42003-024-06033-8 |
| Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
Zusatzmaterialien
Kategorien
Über subito bestellen
Dieser Service ist kostenpflichtig (siehe Lieferbedingungen von subito). Bestellungen, die einen Artikel nebst Supplementary Material umfassen, werden grundsätzlich wie mehrfache Bestellungen bearbeitet. Gebühren fallen in diesen Fällen für jede einzelne Bestellung an.
Fernleihe an ZB MED
Sie können sich den gewünschten Titel als lokale Nutzerin oder lokaler Nutzer von ZB MED direkt an den Standort Köln schicken lassen.