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

Fats, what are fats

what are fats

Define metabolic effects of thyroid hormones, Define Metabolic Effects of T...

Define Metabolic Effects of Thyroid Hormones? Although (T 4 ) is quantitatively predominant, (T 3 ) is the more active form. The mechanism of action of thyroid hormones appears

Explain the bioavailability of folate, Explain the Bioavailability of Folat...

Explain the Bioavailability of Folate? Bioavailability of folate from naturally occurring food sources is variable and frequently incomplete, as mentioned earlier in the food

What are the extraembryonic membranes present in vertebrates, What are the ...

What are the extraembryonic membranes present in vertebrates? The extraembryonic membranes that might be present in vertebrates are the yolk sac, the amnion, the chorion, the

Lactation tetany of mares (eclampsia, Lactation tetany of mares (eclampsia,...

Lactation tetany of mares (eclampsia, transit tetany) Hypocalcaemia in mares causes lactation tetany, which is characterized by abnormal behaviour, in coordination and tetany.

Processing methods for amelioration of anti-nutritional , Processing Method...

Processing Methods for Amelioration of Anti-Nutritional Meals from many oil seeds often contain undesirable toxic and allergenic compounds that can reduce their nutritive valu

Gamete formation, During the life cycle of most animals, some diploid cells...

During the life cycle of most animals, some diploid cells undergo meiosis and haploid form in a process called gametogenesis. Spermatogenesis: In the testes of the male, the

Define feeding for infants of hiv/aids mothers, Define Feeding for Infants ...

Define Feeding for Infants of HIV/AIDS Mothers? It is recommended to continue breast-feeding even if the disease will continue to be transmitted. If these infants are not breas

State the term - molybdenum, State the term - Molybdenum   Molybdenum i...

State the term - Molybdenum   Molybdenum is intimately related to nitrogen metabolism of plants. It is part of the nitrate reductase system which helps to utilise nitrate for n

Microbiology and parasitology, Describe the methods that are used for the i...

Describe the methods that are used for the isolation and identification of bacteria.(20 marks)

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