[HTML][HTML] Structural basis of membrane skeleton organization in red blood cells

N Li, S Chen, K Xu, MT He, MQ Dong, QC Zhang… - Cell, 2023 - cell.com
The spectrin-based membrane skeleton is a ubiquitous membrane-associated two-
dimensional cytoskeleton underneath the lipid membrane of metazoan cells. Mutations of …

Focal adhesions contain three specialized actin nanoscale layers

R Kumari, K Ven, M Chastney, SB Kokate… - Nature …, 2024 - nature.com
Focal adhesions (FAs) connect inner workings of cell to the extracellular matrix to control cell
adhesion, migration and mechanosensing. Previous studies demonstrated that FAs contain …

Young osteocyte-derived extracellular vesicles facilitate osteogenesis by transferring tropomyosin-1

ZX Wang, X Lin, J Cao, YW Liu, ZW Luo… - Journal of …, 2024 - Springer
Background Bone marrow mesenchymal stem cells (BMSCs) can undergo inadequate
osteogenesis or excessive adipogenesis as they age due to changes in the bone …

Myosin-1C differentially displaces tropomyosin isoforms altering their inhibition of motility

LW Pollard, M Boczkowska, R Dominguez… - Journal of Biological …, 2024 - jbc.org
Force generation and motility by actomyosin in nonmuscle cells are spatially regulated by∼
40 tropomyosin (Tpm) isoforms. The means by which Tpms are targeted to specific cellular …

[HTML][HTML] Cryo-EM Structures of Cardiac Muscle α-Actin Mutants M305L and A331P Give Insights into the Structural Mechanisms of Hypertrophic Cardiomyopathy

HL Huang, A Suchenko, G Grandinetti… - European Journal of …, 2024 - Elsevier
Cardiac muscle α-actin is a key protein of the thin filament in the muscle sarcomere that,
together with myosin thick filaments, produce force and contraction important for normal …

Specialized actin nanoscale layers control focal adhesion turnover

R Kumari, K Ven, M Chastney, J Peränen, J Aaron… - bioRxiv, 2023 - biorxiv.org
Focal adhesions (FAs) connect inner workings of the cell to the extracellular matrix to control
cell adhesion, migration, and mechanosensing,. Previous studies demonstrated that FAs …

Single molecule visualization of tropomyosin isoform organization in the mammalian actin cytoskeleton

ML Cagigas, N Ariotti, J Hook, J Rae, RG Parton… - …, 2024 - Wiley Online Library
The actin cytoskeleton is composed of both branched and unbranched actin filaments. In
mammals, the unbranched actin filaments are primarily copolymers of actin and …

[HTML][HTML] Functional redundancy and formin-independent localization of tropomyosin isoforms in Saccharomyces cerevisiae

A Dhar, VT Bagyashree, S Biswas, J Kumari… - bioRxiv, 2024 - ncbi.nlm.nih.gov
Tropomyosin is an actin binding protein which protects actin filaments from cofilin-mediated
disassembly. Distinct tropomyosin isoforms have long been hypothesized to differentially …

Deciphering the molecular mechanisms of actin cytoskeleton regulation in cell migration using cryo-EM

F Fäßler, MG Javoor, FKM Schur - Biochemical Society …, 2023 - portlandpress.com
The actin cytoskeleton plays a key role in cell migration and cellular morphodynamics in
most eukaryotes. The ability of the actin cytoskeleton to assemble and disassemble in a …

Tropomyosin Isoform Expression and Function During Sea Star Development

VFM Vazquez - 2024 - search.proquest.com
For animal cells to be able to maintain or modify their shape, the actin cytoskeleton needs to
be dynamic and able to respond in a matter of seconds. For instance, when cells enter …