Predicted to enable several functions, including catalytic activity, acting on a tRNA; flavin adenine dinucleotide binding activity; and ubiquitin-like modifier activating enzyme activity. Predicted to be involved in protein modification process and tRNA splicing, via endonucleolytic cleavage and ligation. Predicted to be part of transcription factor TFIID complex. Is an ortholog of C. elegans uba-1. In C. elegans, uba-1 is involved in several processes, including developmental process involved in reproduction; negative regulation of transcription by RNA polymerase II; and programmed cell death involved in cell development.