What is the clinical evidence from this study?

Study design: Review. Population: Skeletal muscle molecular motor (myosin).

What question did this study set out to answer?

The aim is to explore the evolution of understanding regarding the molecular mechanisms of muscle contraction mediated by myosin.

September 9, 2021AJP Advances in Physiology EducationOpen Access

Investigation of the molecular motor of muscle: from generating life in a test tube to myosin structure over beers

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Key result

Sixty years of investigation revealed that the molecular motor of muscle operates by the tilting of the myosin lever arm, rather than the globular head, to generate the driving force for contraction.

Design

Review

Authors

JRJack A. RallThe Ohio State University

Discussion

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Implication

This historical review traces the evolution of our understanding of muscle contraction, culminating in the discovery that the myosin lever arm tilting generates the driving force.

Key Points

The aim is to explore the evolution of understanding regarding the molecular mechanisms of muscle contraction mediated by myosin.
Historical review spanning 60 years from the 1940s to the 1990s
Examination of molecular structures and interaction between myosin and actin
Analysis of in vitro motility assays and genetic modifications of myosin.
The atomic structure of the myosin cross bridge was published in 1993, revealing a globular head and a long tail.
Genetic techniques that extended the lever arm enhanced the movement of myosin, demonstrating the lever arm's role in contraction.
The movement is propelled by tilting of the lever arm rather than the globular head.

PICO

Population

Skeletal muscle molecular motor (myosin)

This historical review traces the evolution of our understanding of muscle contraction, culminating in the discovery that the myosin lever arm tilting generates the driving force.

Cite This Study

Jack A. Rall (2021) conducted a review in Skeletal muscle molecular motor (myosin). Sixty years of investigation revealed that the molecular motor of muscle operates by the tilting of the myosin lever arm, rather than the globular head, to generate the driving force for contraction.

synapsesocial.com/papers/6a20aa717cf5d95c4e72e241 https://doi.org/10.1152/advan.00077.2021

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Implication

This historical review traces the evolution of our understanding of muscle contraction, culminating in the discovery that the myosin lever arm tilting generates the driving force.

Investigation of the molecular motor of muscle: from generating life in a test tube to myosin structure over beers

Discussion

Member takes

Implication

Key Points

PICO

Cite This Study

Investigation of the molecular motor of muscle: from generating life in a test tube to myosin structure over beers

Discussion

Member takes

Implication

Key Points

PICO

Cite This Study

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