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. 2013 Nov 4;8(11):e78612. doi: 10.1371/journal.pone.0078612

Figure 4. A schematic model of poly(P) function in bone remodeling.

Figure 4

TRAP, which is secreted from osteoclasts, degrades poly(P) into intermediate poly(P) and subsequently into Pi. Poly(P) inhibits osteoclastic bone resorption, while intermediate poly(P) promotes differentiation and calcification of osteoblasts [7], [15]. Thus, poly(P) may regulate bone remodeling.