myosin

[/ˈmaɪ.ə.sɪn/]
nounmasculinepl: myosins
miosina
1. A motor protein found in muscle cells that interacts with actin filaments to produce muscle contractions
Myosin heads bind to actin and pull the thin filaments toward the center of the sarcomere.
As cabeças de miosina se ligam à actina e puxam os filamentos finos em direção ao centro do sarcômero.
2. Any of various proteins that function as molecular motors in cellular processes beyond muscle contraction
Non-muscle myosins play crucial roles in cell division and cytoplasmic transport.
As miosinas não-musculares desempenham papéis cruciais na divisão celular e no transporte citoplasmático.
Myosin is a technical term used primarily in scientific, medical, and educational contexts. It appears in biology and physiology curricula in both Brazil and the United States. The term is identical in Portuguese (miosina) as it is derived from Latin and Greek roots, making it a universal scientific term across languages.

Regional Variations

General Brazilian Portuguese
miosina
Standard scientific term used in medical and biological contexts
Portugal
miosina
Identical usage; standard scientific terminology across Portuguese-speaking countries

Related Words

actinmuscle contractionsarcomereproteinmotor proteinsliding filament theory
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