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. 2014 Jun 26;10(6):e1004465. doi: 10.1371/journal.pgen.1004465

Figure 7. Altered post-translational modification of specific type I collagen lysine residues in the absence of Ppib.

Figure 7

Quantitation of type I collagen modifications at α1(I) and α2(I) K87 residues, which are important for crosslinking of type I collagen heterotypic fibrils in tissue. Results were obtained from collagen secreted in culture by primary osteoblasts, or from 3–5 independent tissue samples for each genotype. K, lysine; OH, hydroxylysine; G, galactosylhydroxylysine; GG, glucosylgalactosylhydroxylysine.