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TLS Online TPP Program

#Id: 8408

Tropomyosin (TM) is a ropelike molecule, about 40 nm in length, binds to 7 actin subunits in an actin filament.

#Section 3: Genetics, Cellular and Molecular Biology #Myosin & Muscle Contraction #Part B Pointers
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TLS Online TPP Program

#Id: 8367

#Section 3: Genetics, Cellular and Molecular Biology

Myosin II
Two heads and assembles into bipolar filaments
Small and non-processive
Function- Contraction
TLS Online TPP Program

#Id: 8366

#Section 3: Genetics, Cellular and Molecular Biology

Myosin I
single head domain
Function- Membrane association, endocytosis
TLS Online TPP Program

#Id: 8365

#Section 3: Genetics, Cellular and Molecular Biology

Three classes of myosins:
Myosin I
Myosin II
Myosin V
TLS Online TPP Program

#Id: 8364

#Section 3: Genetics, Cellular and Molecular Biology

The first myosin discovered
Myosin II, was isolated from skeletal muscle.
TLS Online TPP Program

#Id: 8363

#Section 3: Genetics, Cellular and Molecular Biology

Myosins have 
Motor head domain
Lever-arm neck domain
Cargo-binding tail domain
TLS Online TPP Program

#Id: 8362

#Section 3: Genetics, Cellular and Molecular Biology

Myosin 
Actin-based motors powered by ATP hydrolysis.