Respiratory roots or pneumatophores

The roots of some trees and shrubs growing in saline marshes (mangrove plants) suffer from the lack of oxygen. Atmospheric air enters these roots through the minute pores of special lenticels (pneumathodes) on the exposed root tips.

TLS Online TPP Program

#Id: 8370

#XL - Q Biochemistry

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

TLS Online TPP Program

#Id: 8369

#XL - Q Biochemistry

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

TLS Online TPP Program

#Id: 8368

#XL - Q Biochemistry

Myosin V

Two heads but does not assemble into filaments

Large and processive

Function- Organelle transport

TLS Online TPP Program

#Id: 8367

#XL - Q Biochemistry

Myosin II

Two heads and assembles into bipolar filaments

Small and non-processive

Function- Contraction

TLS Online TPP Program

#Id: 8366

#XL - Q Biochemistry

Myosin I

single head domain

Function- Membrane association, endocytosis

TLS Online TPP Program

#Id: 8365

#XL - Q Biochemistry

Three classes of myosins:

Myosin I

Myosin II

Myosin V