UniprotKB/SwissProt ID: Q93ZR1 (Q93ZR1)
Gene Name:
HAG3
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Catalytic tRNA acetyltransferase subunit of the elongator complex which is required for multiple tRNA modifications, including mcm5U (5-methoxycarbonylmethyl uridine), mcm5s2U (5-methoxycarbonylmethyl-2-thiouridine), and ncm5U (5-carbamoylmethyl uridine) (PubMed:20398216). In the elongator complex, acts as a tRNA uridine(34) acetyltransferase by mediating formation of carboxymethyluridine in the wobble base at position 34 in tRNAs (By similarity). Promotes organ development by modulating cell division rate (PubMed:20080602). Required for auxin distribution or signaling (PubMed:20080602). Required for meristem cell cycle activation at the time of germination (PubMed:23969312). Mediates the establishment of leaf polarity independently of AS2 and the ta-siRNA-related pathway (PubMed:21700721). Indirectly involved in negatively regulating the expression of genes that participate in UV-B responses, such as DNA repair enzymes and enzymes that participate in sunscreen pigment biosynthesis (PubMed:25907565)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization: Nucleus. Cytoplasm
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