Difference between myosin and actin filaments, Biology

Assignment Help:

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.


Related Discussions:- Difference between myosin and actin filaments

How are animals classified according to the germ layers, Q. How are animals...

Q. How are animals classified according to the germ layers present in their embryonic development? Cnidarians are diploblastic, that is they present only ectoderm and endoderm.

Adenylate cyclase in the liver cell membrane, Adenylate cyclase  in  the ...

Adenylate cyclase  in  the liver cell membrane Glucagon activates adenylate cyclase  in  the liver cell membrane and thus turns on glycogenolysis and reduces glycogenesis. Insu

Eubiont, Eubiont The origin of true life , eubiont from a pmtobiont inv...

Eubiont The origin of true life , eubiont from a pmtobiont involves the acquisition of three major features: 1) assembly of phospholipids and proteins into a cell membrane f

Inverse pcr, Inverse PCR is the variation of PCR which makes the amplifica...

Inverse PCR is the variation of PCR which makes the amplification of DNA segments of unknown sequence that flank DNA segments of the known sequence possible; in short, total DNA i

A healthy potted pitcher plant, A healthy potted pitcher plant when kept in...

A healthy potted pitcher plant when kept in a green house with favourable conditions of light, temperature, soil and water showed poor growth although there was no infection. Give

How different are pteridophytes from bryophytes, Q. How different are pteri...

Q. How different are pteridophytes from bryophytes regarding substance transport? Pteridophytes are tracheophyte (vascular) plants that are they have tissues specialized in con

Earthquake energy, Large Quantity of energy is released during an earthquak...

Large Quantity of energy is released during an earthquake with a combination of radiated elastic strain seismic waves frictional, heating of the fault surface and cracking of the r

On site sanitation, Introduction: There are different technologies avai...

Introduction: There are different technologies available for dealing with waste water management and excreta.  Some are suitable for dealing off-site sanitation and other can b

Explain about the cancer and infertility - obesity, Explain about the Cance...

Explain about the Cancer and Infertility - Obesity? Cancer: Risk of cancers of the colon, rectum and prostrate increases greatly in obese men while obese women are more likely

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd