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. Author manuscript; available in PMC: 2015 May 14.
Published in final edited form as: Front Biosci (Landmark Ed). 2011 Jun 1;16:2598–2621. doi: 10.2741/3875

Figure 3.

Figure 3

Model of type XI collagen structure [adapted from Warner et al. (58)]. A, Proposed trimeric structure showing large non-helical N-terminal domain for alpha 1 chain. Arrow demarks approximate position of proteolytic cleavage by unknown protease which generates 60 kDa N-terminal fragment found enriched within biomineralization foci (see Figure 2). B, Description of the composition of six different possible splice variant sequences for the N-terminal domain. KEY: VR, variable region; NTD, N-terminal domain; Npp, N-terminal propeptide.