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. 2022 Mar 17;12(3):256. doi: 10.3390/metabo12030256

Table 1.

Basic functions and tissue distribution of proprotein convertases (PCs) [1,2,3].

Proprotein Convertase (PC) Tissue Distribution Function
PCSK1 (PC1/3) Hypothalamus, pituitary, pancreas, thyroid gland, adrenal glands Regulation of appetite; activation of insulin, glucagone, orexin, ghrelin
PCSK2 (PC2) Central nervous system (CNS), pituitary, pancreas Regulation of carbohydrate metabolism
PCSK3 (furin) Ubiquitous Regulation of embryogenesis, activation of growth factors and bacterial toxins (e.g., Clostridioides spp.), carcinogenesis
PCSK4 (PC4) Germinal Regulation of reproduction processes
PCSK5 (PC5/6) Ubiquitous Regulation of embryogenesis (e.g., CNS)
PCSK6 (PACE4)
PCSK7 (PC7) Colon, spleen, liver Regulation of lipid metabolism, atherogenesis
SKI-1 (S1P) Ubiquitous
PCSK9 Liver, small intestine