Identification and characterization of substrates crosslinked by transglutaminases in liver and kidney fibrosis.

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Tatsukawa H, Takeuchi T, Shinoda Y, Hitomi K

Identification and characterization of substrates crosslinked by transglutaminases in liver and kidney fibrosis.

Anal Biochem. 2020 Feb 13:113629. doi: 10.1016/j.ab.2020.113629.

PubMed ID

32061735 [ View in PubMed

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Abstract

The transglutaminase (TGase) family consists of eight isozymes that catalyze the Ca(2+)-dependent crosslink formation between the glutamine and lysine residues of proteins. In the pathogenesis of various chronic diseases, among the TGase isozymes, TG2 in particular was upregulated and contributed to a critical role in fibrosis development and progression via the stabilization of extracellular matrix proteins and activation of TGF-beta. Although TG2 has been considered a key enzyme in fibrosis, the causative role of TG2 and involvement of other isozymes remain unclear. We have recently developed a comprehensive analysis method targeting the isozyme-specific substrates of TGase in liver and kidney fibrosis. In this review article, we introduced the previously developed method for determining the activity and tissue distribution of TGase and for the detecting and identifying TGase substrates in an isozyme-specific manner. Using our comprehensive analysis method, we newly characterized the overlapped profile data regarding potential substrates of TG1 and TG2 that have been identified in liver and kidney fibrosis to date. Our results obtained by comparing the specificity and similarity of potential TGase substrates between different tissue fibrosis models provide a deeper understanding regarding the specific and common pathways in disease pathogenesis and progression.

DrugBank Data that Cites this Article

Drug Enzymes

Drug	Enzyme	Kind	Organism	Pharmacological Action	Actions
L-Glutamine	Protein-glutamine gamma-glutamyltransferase 6	Protein	Humans	Unknown	Substrate	Details
L-Glutamine	Protein-glutamine gamma-glutamyltransferase Z	Protein	Humans	Unknown	Substrate	Details