Proteiny Ddi1: nová rodina retrovirům podobných aspartátových proteas

Šmilauerová, Kristýna

Ubiquitin-proteasome system is one of the key pathways which maintain cell homeostasis. Its purpose is to degrade damaged, misfolded or unnecessary proteins. It is also involved in multiple other processes such as DNA damage repair, cell cycle control or signaling. The entire system consists of multiple components, which are mutually strictly regulated. Important part of this system is group of so called proteasome adaptor proteins. Their role is to recognize and bind targeted substrates and transport them to the proteasome for degradation. Ddi1-like (abbrev. from DNA damage-inducible protein 1) protein family, a group of proteins with retroviral aspartyl protease-like domain, belongs to proteasome adaptor proteins. Global biological role of this protein family is only partially understood the most studied member is Ddi1 protein from Saccharomyces cerevisiae, and it is thus a subject of active research. This thesis summarizes published information about this protein family, describes its general characteristics and known functions, situates them in the context of cell processes and thereby might suggest the course of further study.

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