Melatonin: Bone Metabolism in Oral Cavity

Table 1

Osteoid matrix proteins.

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(1) Collagen type I (90%)

(2) Noncollagenous proteins (10%)

 (i) Glycoproteins:

  (a) Alkaline phosphatase

  (b) RGD sequence-glycoproteins (osteopontin, osteonectin, fibronectin, thrombospondin, and bony sialoprotein)

 (ii) Proteoglycans

 (iii) Proteins with γ-carboxyglutamic acid (osteocalcin, osteoid protein γ-carboxyglutamic acid)

 (iv) Serum proteins retained in the bone

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