Myofilament length dependent activation

PP de Tombe, RD Mateja, K Tachampa, YA Mou… - Journal of molecular and …, 2010 - Elsevier
The Frank–Starling law of the heart describes the interrelationship between end-diastolic
volume and cardiac ejection volume, a regulatory system that operates on a beat-to-beat …

Cardiac MyBP-C regulates the rate and force of contraction in mammalian myocardium

RL Moss, DP Fitzsimons, JC Ralphe - Circulation research, 2015 - Am Heart Assoc
Cardiac myosin–binding protein-C (cMyBP-C) is a thick filament-associated protein that
seems to contribute to the regulation of cardiac contraction through interactions with either …

The structure of the native cardiac thin filament at systolic Ca2+ levels

CM Risi, I Pepper, B Belknap… - Proceedings of the …, 2021 - National Acad Sciences
Every heartbeat relies on cyclical interactions between myosin thick and actin thin filaments
orchestrated by rising and falling Ca2+ levels. Thin filaments are comprised of two actin …

The sliding filament theory since Andrew Huxley: multiscale and multidisciplinary muscle research

JD Powers, SA Malingen, M Regnier… - Annual review of …, 2021 - annualreviews.org
Two groundbreaking papers published in 1954 laid out the theory of the mechanism of
muscle contraction based on force-generating interactions between myofilaments in the …

The Frank–Starling mechanism in vertebrate cardiac myocytes

HA Shiels, E White - Journal of Experimental Biology, 2008 - journals.biologists.com
SUMMARY The Frank–Starling law of the heart applies to all classes of vertebrates. It
describes how stretch of cardiac muscle, up to an optimum length, increases contractility …

Cardiac remodeling in fish: strategies to maintain heart function during temperature change

JM Klaiman, AJ Fenna, HA Shiels, J Macri, TE Gillis - PloS one, 2011 - journals.plos.org
Rainbow trout remain active in waters that seasonally change between 4° C and 20° C. To
explore how these fish are able to maintain cardiac function over this temperature range we …

High-resolution cryo-EM structure of the junction region of the native cardiac thin filament in relaxed state

CM Risi, B Belknap, HD White, K Dryden, JR Pinto… - PNAS …, 2023 - academic.oup.com
Cardiac contraction depends on molecular interactions among sarcomeric proteins
coordinated by the rising and falling intracellular Ca2+ levels. Cardiac thin filament (cTF) …

Coupling of adjacent tropomyosins enhances cross-bridge-mediated cooperative activation in a markov model of the cardiac thin filament

SG Campbell, FV Lionetti, KS Campbell… - Biophysical journal, 2010 - cell.com
We developed a Markov model of cardiac thin filament activation that accounts for
interactions among nearest-neighbor regulatory units (RUs) in a spatially explicit manner …

Cardiac function and modulation of sarcomeric function by length

LM Hanft, FS Korte, KS McDonald - Cardiovascular research, 2008 - academic.oup.com
Abstract The Frank–Starling relationship provides beat-to-beat regulation of ventricular
function by matching ventricular input and output. This review addresses the subcellular …

Calcium binding kinetics of troponin C strongly modulate cooperative activation and tension kinetics in cardiac muscle

KL Kreutziger, N Piroddi, JT McMichael, C Tesi… - Journal of molecular and …, 2011 - Elsevier
Tension development and relaxation in cardiac muscle are regulated at the thin filament via
Ca2+ binding to cardiac troponin C (cTnC) and strong cross-bridge binding. However, the …