The gene that encodes the MYB-related protein is therefore probably a primary response gene, and the LHCB gene itself is probably a secondary response gene.

TLS Online TPP Program

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#Unit 4. Cell Communication and Cell Signaling

Myosins have 

  Motor head domain

  Lever-arm neck domain

  Cargo-binding tail domain

TLS Online TPP Program

#Id: 1399

#Unit 4. Cell Communication and Cell Signaling

The first myosin discovered

Myosin II, was isolated from skeletal muscle.

TLS Online TPP Program

#Id: 1400

#Unit 4. Cell Communication and Cell Signaling

Three classes of myosins:

Myosin I

Myosin II

Myosin V

TLS Online TPP Program

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#Unit 4. Cell Communication and Cell Signaling

Myosin I

single head domain

Function- Membrane association, endocytosis

TLS Online TPP Program

#Id: 1402

#Unit 4. Cell Communication and Cell Signaling

Myosin II

Two heads and assembles into bipolar filaments

Small and non-processive

Function- Contraction 

TLS Online TPP Program

#Id: 1403

#Unit 4. Cell Communication and Cell Signaling

Myosin V

Two heads but does not assemble into filaments

Large and processive

Function- Organelle transport