what are the structural differences between alpha keratin
and collagen?

Answer Posted / navya

Alpha keratin is found in skin and hair,nails,feathers.
its polypeptide chain is right handed helix.
the 3 helical strands wrap together into a superhelix
called protofibril.
the superhelical twisting is left handed.
the covalent cross links are contributed by disulphide
bonds.



collagen found in connective tissues such as
tendons,cartilage,bones,and cornea of eye.
its polypeptide chain is left handed.
the 3 helical strands wrap together into a repeating
superhelical structure called tropocollagen.
the superhelical twisting is righthanded.
the covalent links are contributed by a covalent link
between two lys residues.

Is This Answer Correct ?    34 Yes 9 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How can energy change in the formation of NACL be determined?

564


In electronic conductors, what is the reason for flow of current?

602


Why fe3+ ion is more stable than fe2+ ion is?

617


To calculate the e.m.f of the cell when does the nelsons equation is use?

584


Define ionic product of water. What is its value?

690






Glycolysis is A) C6H12O6 --> 2C2H5OH + 2CO2 B) C6H12O6 --> 2CH3H4O3 + 4H c) C3H4O3 + NAD --> C2H5OH + CO2 NAD D) C6H12O6 + 6H20 --> 6CO2 + 6H2O

2619


What are enzymes? What is the importance of enzymes for the living beings?

675


During a heart attack, blood flowing to the heart muscle is interrupted by blockage of a coronary artery. How would you expect the metabolism in the heart to change?

2575


Give the example for electrophilic substitution reaction?

557


Define limiting radius?

615


If a polar molecule has a charge of 4.8 * 10^ (-10) and internuclear distance is 1A then what is its dipole moment?

586


What is the structure of cscl and give the co-ordination number of Cscl?

662


bane the by products when crude oil is refined by distillation

1678


Where is csf found?

643


What is the formula of hypo in oxidation state of sulphur?

608