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  • Title: The emerging roles of ubiquitin-like protein Urm1 in eukaryotes.
    Author: Zhang X, Chen XL.
    Journal: Cell Signal; 2021 May; 81():109946. PubMed ID: 33548388.
    Abstract:
    The ubiquitin related modifier Urm1 protein was firstly identified in the yeast Saccharomyces cerevisiae, and was later found to play important roles in different eukaryotes. By the assistance of an E1-like activation enzyme Uba4, Urm1 can function as a modifier to target proteins, called urmylation. The thioredoxin peroxidase Ahp1 was the only identified Urm1 target in the early time. Recently, many other Urm1 targets were identified, which is important for us to fully understand functions of urmylation. Urm1 can also function as a sulfur carrier to play a key role in tRNAs thiolation. Mechanisms of the Urm1 in protein and RNA modifications were finely revealed in the past few years. Biological and physiological functions of Urm1 were also found in different organisms. In this review, we will summarize these emerging progresses.
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