General Knowledge - General Science - Discussion

11. 

The major ingredient of leather is

[A]. collagen
[B]. carbohydrate
[C]. polymer
[D]. nucleic acid

Answer: Option A

Explanation:

No answer description available for this question.

Dr M Degra said: (Jun 7, 2012)  
Collagen is animal protein

Sr Degra said: (Mar 1, 2013)  
Collagen has an unusual amino acid composition and sequence:.

Glycine is found at almost every third residue.

Proline (Pro) makes up about 17% of collagen.

Collagen contains two uncommon derivative amino acids not directly inserted during translation. These amino acids are found at specific locations relative to glycine and are modified post-translationally by different enzymes, both of which require vitamin C as a cofactor.

Hydroxyproline (Hyp) , derived from proline.

Hydroxylysine (Hyl) , derived from lysine (Lys). Depending on the type of collagen, varying numbers of hydroxylysines are glycosylated (mostly having disaccharides attached).

Cortisol stimulates degradation of (skin) collagen into amino acids.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.