Results 31 to 40 of about 19,828 (252)

The conserved transmembrane proteoglycan Perdido/Kon-tiki is essential for myofibrillogenesis and sarcomeric structure in Drosophila

open access: yes, 2014
M.B. was funded by a Wellcome Trust Senior Investigator Award to P. Lawrence (WT096645MA).Muscle differentiation requires the assembly of high-order structures called myofibrils, composed of sarcomeres.
Estrada, B   +3 more
core   +1 more source

Independent regulation of Z-lines and M-lines during sarcomere assembly in cardiac myocytes revealed by the automatic image analysis software sarcApp

open access: yeseLife, 2023
Sarcomeres are the basic contractile units within cardiac myocytes, and the collective shortening of sarcomeres aligned along myofibrils generates the force driving the heartbeat.
Abigail C Neininger-Castro   +7 more
doaj   +1 more source

Myofibrils of skeletal muscle: the activity coefficient of orthophosphate.

open access: yes, 1997
In the myofibrils of skeletal muscle, at 22°C, pH 7.1 and at the physiological protein osmotic pressure of 1.8 x 105 dynes/cm2, orthophosphate behaves quite ideally, the activity coefficient being 0.85.
MAGRI E.   +4 more
core   +3 more sources

Myofibrils put the squeeze on nuclei [PDF]

open access: yesNature Cell Biology, 2017
During muscle development, nuclei travel from the centre of the myofibre to the periphery, a process defective in certain diseases. A new study reveals that this movement is due to centripetal forces imposed on nuclei by the crosslinking and contraction of myofibrils.
Jonathan N, Rosen, Mary K, Baylies
openaire   +2 more sources

Early Clinical, Imaging, and Pathological Characteristics of SRPK3/TTN‐Digenic Myopathy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective SRPK3/TTN‐digenic myopathy was recently established as a skeletal muscle myopathy caused by digenic inheritance. This study characterizes the early clinical presentation of SRPK3/TTN‐digenic myopathy in one previously reported and seven newly identified pediatric patients.
Rotem Orbach   +23 more
wiley   +1 more source

Myofibril diameter is set by a finely tuned mechanism of protein oligomerization in Drosophila

open access: yeseLife, 2019
Myofibrils are huge cytoskeletal assemblies embedded in the cytosol of muscle cells. They consist of arrays of sarcomeres, the smallest contractile unit of muscles.
Nicanor González-Morales   +5 more
doaj   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

open access: yesAdvanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo   +7 more
wiley   +1 more source

Contractile Properties of Human Fetal Skeletal Myofibrils

open access: yes, 2013
Congenital contractures such as clubfoot are present in ?1/250 live births. Several congenital contractures syndromes are caused by mutations in genes that code for skeletal myofilament proteins, including MYH3 and MYH8.
Regnier, Michael   +4 more
core   +1 more source

Accessibility of myofilament cysteines and effects on ATPase depend on the activation state during exposure to oxidants. [PDF]

open access: yesPLoS ONE, 2013
Signaling by reactive oxygen species has emerged as a major physiological process. Due to its high metabolic rate, striated muscle is especially subject to oxidative stress, and there are multiple examples in cardiac and skeletal muscle where oxidative ...
Sean M Gross, Steven L Lehman
doaj   +1 more source

Ultrastructural Assessment and Proteomic Analysis in Myofibrillogenesis in the Heart Primordium After Heartbeat Initiation in Rats

open access: yesFrontiers in Physiology, 2022
Myofibrillogenesis is an essential process for cardiogenesis and is closely related to excitation-contraction coupling and the maintenance of heartbeat.
Nobutoshi Ichise   +9 more
doaj   +1 more source

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