What does this research mean for the field?

The bending stiffness of actin filaments is wave-vector-dependent, which explains historical discrepancies between static and dynamic persistence length measurements, and this stiffness decreases upon the binding of tropomyosin. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

March 10, 1993EPL (Europhysics Letters)

Direct Measurement of the Wave-Vector-Dependent Bending Stiffness of Freely Flickering Actin Filaments

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Population

Fluorescence-labelled actin filaments

Comparison

Binding of tropomyosin vs Unbound actin filaments

Design

Preclinical

Authors

JKJosef A. KäsLeipzig University HSHelmut H. StreyStony Brook University MBM. BärmannGoethe University Frankfurt

Discussion

Member takes

Implication

Does not yet alter cardiac mechanics understanding; hypothesis-generating for thin filament models in sarcomeres.

Structured PICO

Population

Fluorescence-labelled actin filaments

Intervention

Binding of tropomyosin

Comparator

Unbound actin filaments

Outcome

Wave-vector-dependent bending elastic modulus (kc) and persistence length (Lp)

The study demonstrates that actin filament stiffness is wave-vector-dependent, explaining discrepancies between static and dynamic measurements of persistence length, and shows that tropomyosin binding decreases bending elasticity.

Cite This Study

Käs et al. (1993) studied this question.

synapsesocial.com/papers/6a1d4ffd1024216094052c88 https://doi.org/10.1209/0295-5075/21/8/012

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Direct Measurement of the Wave-Vector-Dependent Bending Stiffness of Freely Flickering Actin Filaments

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Direct Measurement of the Wave-Vector-Dependent Bending Stiffness of Freely Flickering Actin Filaments

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Also Consider

Also Consider