243 KB14 KB199820252019Kos, JankoLenarčič, BrigitaPečar Fonović, UršaPerišić, MilicaZidar, Naceštevilka:1letnik:65str. 58-61ISSN:1580-3155COBISSID_HOST:4648561URN:URN:NBN:SI:doc-RJTVCR1CenslSlovensko kemijsko društvoActa chimica slovenicacathepsin Xcisteinski katepsinicystatininhibitorinhibitorji peptidazkarboksipeptidazna aktivnostkatepsin XstefinthyropinThe carboxypeptidase activity of cathepsin X is not controlled by endogenous inhibitors|Cysteine cathepsins are peptidases with housekeeping functions that play different specific roles in different tissues. Endogenous peptidase inhibitors, such as cystatins and thyropins are the ultimate way of controlling their activity. It appears, however, that cathepsin X, a monocarboxypeptidase, whose overexpression is associated with several patholog- ical processes, is not under the control of endogenous inhibitors. Inhibitors belonging to various groups inhibit other cathepsins tested, but none decrease the carboxypeptidase activity of cathepsin X. This absence of inhibitor control is another feature that distinguishes cathepsin X from other members of the cysteine peptidasesCisteinski katepsini so peptidaze z vzdrževalno vlogo in z različnimi specifičnimi vlogami v različnih tkivih. Endogeni inhibitorji peptidaz, kot so cistatini in tiropini, so bistveni za nadzor njihove aktivnosti, vendar pa rezultati kažejo, da katepsin X, monokarboksipeptidaza, katere prekomerno izražanje je povezano z več patološkimi procesi, ni pod nad- zorom endogenih inhibitorjev. Inhibitorji, ki pripadajo različnim skupinam, so zavirali druge preizkušene katepsine, nobeden pa ni zmanjšal karboksipeptidazne aktivnosti katepsina X. Odsotnost takega nadzora z inhibitorji, je še ena značilnost, ki razlikuje katepsin X od drugih članov cisteinskih peptidazTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaSlovensko kemijsko društvo