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

Which is the most stable sulphur at room temperature?

555


Explain the reduction of the activation energy of chemical reactions?

552


What is the process, by which aluminium is refined?

637


What are enzymes?

593


What is the structure of cscl

581






How much empty space is found in globular proteins?

1612


Aromatic compounds generally undergo which type of reactions?

630


Does rna molecule have two polynucleotide chains likewise dna?

601


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?

2566


How is the cooling of organs and tissues for medical transplantations associated with the effect of temperature upon enzymatic reactions?

556


What are pentoses? To what organic group do pentoses belong? Are nucleotides formed of only one type of pentose?

627


why ph is not more than 14?

1029


which fat soluble vitamin has co-enzymic function?

1464


Define geometrical isomerism.

622


What is polymerase chain reaction used for?

628