Most abundant protein of bone is?
A. Laminin
B. Osteocalcin
C. Type 1 collagen
D. Type 2 collagen
Correct answer : C. Type 1 collagen
Collagen triple helixCollagen triple helix
Most abundant protein of bone is type 1 collagen.
It is a triple helix formed by two α1 peptide chains and one α2 peptide chain.
Ref: Davidson’s Principles and Practice of Medicine, 22nd Edition, p1062
Image credits: Author: Vossman. Licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. http://en.wikipedia.org/wiki/File:Collagentriplehelix.png
