No matter how it is born, a new gene starts its life as a single copy in the population.

As with any new mutation, by far the most likely outcome is that it will be lost by random drift or selection over the next few generations

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

TLS Online TPP Program

#Id: 1404

#Unit 4. Cell Communication and Cell Signaling

All Myosins move toward the (+) end of an actin filament except myosin VI.

TLS Online TPP Program

#Id: 1405

#Unit 4. Cell Communication and Cell Signaling

Myosin VI move toward the (−) end of an actin filament. 

TLS Online TPP Program

#Id: 1406

#Unit 4. Cell Communication and Cell Signaling

The length of the myosin II neck domain determines the rate of movement.

TLS Online TPP Program

#Id: 1407

#Unit 4. Cell Communication and Cell Signaling

In the absence of ATP, the myosin head is firmly attached to the actin filament. 

 

TLS Online TPP Program

#Id: 1408

#Unit 4. Cell Communication and Cell Signaling

In the presence of ATP,  myosin head releases from the actin filament.