FunctionCatalyzes the attachment of serine to tRNA(Ser). Is also probably able to aminoacylate tRNA(Sec) with serine, to form the misacylated tRNA L-seryl-tRNA(Sec), which will be further converted into selenocysteinyl-tRNA(Sec).
PathwayAminoacyl-tRNA biosynthesis; selenocysteinyl-tRNA(Sec) biosynthesis; L-seryl-tRNA(Sec) from L-serine and tRNA(Sec): step 1/1.
Sequence similaritiesBelongs to the class-II aminoacyl-tRNA synthetase family. Type-1 seryl-tRNA synthetase subfamily.
DomainConsists of two distinct domains, a catalytic core and a N-terminal extension that is involved in tRNA binding.
Post-translational modificationsPhosphorylated upon DNA damage, probably by ATM or ATR.