Most abundant protein of bone – Medicine MCQ

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

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