Difference between myosin and actin filaments, Biology

DIFFERENCES BETWEEN MYOSIN AND ACTIN FILAMENTS

 

 

Myosin filaments (primary filaments)

 

Actinfilaments (secondary filaments)

1.

Found only in A-band of sarcomere.

1.

Found in both A and I-bands.

2.

Thicker (0.01 mm) but longer (4.5 mm) than actin filaments.

2.

Thinner (0.005 mm) but shorter (2-2.6 mm)

than myosin filaments.

 

3.

 

More molecular weight.

 

3.

 

Less, molecular weight.

4.

Cross bridges present, hence have rough

4.

Cross bridges absent, hence have smooth

 

surface.

 

surface.

5.

Fewer than actin filaments.

5.

More numerous than myosin filaments, six of

 

 

6.

 

 

Free at both the ends.

 

 

6.

them surround each myosin filament.

 

Free at one end and are joined to Z-line by other end.

7.

Consist of 2 proteins: myosin and meromysm.

7.

Consist of 3 proteins: actin, tropomyosin and troponin.

8.

Do not slide during muscle contraction.

8.

Slide into H-zone during muscle contraction.

Posted Date: 10/1/2012 3:54:49 AM | Location : United States







Related Discussions:- Difference between myosin and actin filaments, Assignment Help, Ask Question on Difference between myosin and actin filaments, Get Answer, Expert's Help, Difference between myosin and actin filaments Discussions

Write discussion on Difference between myosin and actin filaments
Your posts are moderated
Related Questions
Q. Reduction in left ventricular? Vasodilators improve stroke volume, and reduce degree of regurgitation. This results from decrease in systemic vascular resistance and leads t

Explain Some Ethological Activities Comparative studies of behaviour or activities are also used in systematic for identification of organisms. The comparative study of the beh

Diffusion of Gases Gases diffuse from areas of higher partial pressure to areas of lower partial pressure. The diffusion along the partial pressure gradient ceases only when

Q. Of what subunits are ribosomes are made? Ribosomes are made of two subunits the small subunit and the large subunit. These subunits are made of proteins and ribosomic RNA (r

similarity between pisces & mammals about dirhynous condition......

Q. Explain Limited mucosal contact diarrhoea? Limited mucosal contact diarrhoea: It results from situations of inadequate mixing of chyme (semi-liquid mass of food passing thro

Define Basic Properties To Proteins, To Be a Good Foaming Agent? A protein must: a) Be able to rapidly absorb at the air-water interface during whipping, b) Undergo rapid

What are the scopes of Zoology?..

Explain the Concept of Menu Planning? You have learnt from the previous units that our body's many functions, be it physical activity, mental exercise, growth (in the case of c

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4