What question did this study set out to answer?

This research investigates how myosin-binding proteins influence the organization of myosin heavy chain structures in cells.

January 1, 1996Molecular Biology of the CellOpen Access

Modulation of myosin filament organization by C-protein family members.

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Population

Mammalian nonmuscle COS cells (COS-7 and COS-1) transiently transfected with sarcomeric proteins

Comparison

Co-expression of myosin heavy chain and… vs Expression of MyHC alone

Design

Preclinical

Authors

SSStephan SeilerMedical University of Graz DFDonald A. FischmanCornell University LLLeslie A. LeinwandBoston University

Discussion

Member takes

Implication

MyBP-C/H compact myosin in COS cells; hypothesis-generating for thick filament assembly in cardiomyopathy.

Key Points

This research investigates how myosin-binding proteins influence the organization of myosin heavy chain structures in cells.
Transient transfection of MyHC into COS cells to observe protein interactions.
Co-expression of MyHC with MyBP-C or -H to analyze filament organization.
Immunoelectron microscopy to visualize the structural differences in filament organization.
Co-expression with MyBP-C or -H results in significantly longer myosin cables encircling the nucleus.
Cable structures are more uniform in diameter compared to MyHC-only spindle structures.
Cytoskeletal architecture appears to regulate the polymer formation between MyHC and MyBP.

Structured PICO

Population

Mammalian nonmuscle COS cells (COS-7 and COS-1) transiently transfected with sarcomeric proteins

Intervention

Co-expression of myosin heavy chain (MyHC) and myosin-binding protein (MyBP-C or MyBP-H)

Comparator

Expression of MyHC alone

Outcome

Modulation of myosin filament organization (structure width and cable formation)surrogate

Myosin-binding proteins (MyBP-C and MyBP-H) actively modulate myosin thick filament organization by compacting myosin filaments into uniform cable structures.

Cite This Study

Seiler et al. (1996) studied this question.

synapsesocial.com/papers/6a779b592e130d02afecabd9 https://doi.org/10.1091/mbc.7.1.113

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Modulation of myosin filament organization by C-protein family members.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Modulation of myosin filament organization by C-protein family members.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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