?
Selenophosphate synthetase (SelD) catalyzes the conversion of selenium to selenophosphate which is required by a number of bacterial, archaeal and eukaryotic organisms for synthesis of Secys-tRNA, the precursor of selenocysteine in selenoenzymes. The N-terminal domain of SelD is related to the ATP-binding domains of hydrogen expression/formation protein HypE, the AIR synthases, and FGAM synthase and is thought to bind ATP.
Jiyao W et al.(2023). "The conserved domain database in 2023.",