Electrophoresis can be performed in two environment 

In free solution - Moving boundary electrophoresis (A. G. Tiselius) & CE

n the medium  -  GEL ( Agarose & PAGE )

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#Unit 2. Cellular Organization

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

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#Unit 2. Cellular Organization

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

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#Unit 2. Cellular Organization

Thick-filament regulation

Myosin-dependent mechanism regulate contraction in smooth muscle and non-muscle cells.

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#Unit 2. Cellular Organization

Smooth muscle cells and nonmuscle cells are regulated by:

Norepinephrine, angiotensin, endothelin, histamine

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#Unit 2. Cellular Organization

Smooth muscle contraction is regulated by the cycling of myosin II between on and off states.

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#Id: 8390

#Unit 2. Cellular Organization

In vertebrate smooth muscle, phosphorylation of the myosin regulatory light chain activates contraction in Ca2+ dependent manner.