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. 2017 Jun 30;11:178. doi: 10.3389/fncel.2017.00178

Figure 1.

Figure 1

Domain structure and brain expression of different metzincins described in the review article. The domain organization of metalloproteinases (MMPs) (A), adamlysins (B) and astacins (C). Sig, signal peptide; Pro, propeptide; Fu, Pro-protein convertase (furin) cleavge site; H, hinge region; Fn, fibronectin type II motif; TM + CD, transmembrane type I domain with cytoplasmic domain; GPI, Glycosylphosphatidylinositol-anchoring sequence; Cys, cysteine-rich domain; Ig, immunoglobulin-like domain; Dis, disintegrin domain; Thr, thrombospondin type I-like domain; MAM, meprin/A5-protein/PTPmu domain; TRAF, MATH/TRAF domain; I, inserted domain; EGF, epidermal growth factor-like domain; CUB, complement C1r/C1 s, Uegf, Bmp1 domain. Meprin α contains proteolytic processing sequence in inserted domain, that is essential for the production of soluble meprin α if not coexpressed with meprin β. (D) List of metzincins that are confirmed to be expressed by oligodendrocytes, astrocytes and neurons in the central nervous system (CNS).