Catalyzes the attachment of serine to tRNA(Ser) in a two-step reaction: serine is first activated by ATP to form Ser-AMP and then transferred to the acceptor end of tRNA(Ser) (   ). Is probably also 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) ( , ). In the nucleus, binds to the VEGFA core promoter and prevents MYC binding and transcriptional activation by MYC . Recruits SIRT2 to the VEGFA promoter, promoting deacetylation of histone H4 at 'Lys-16' (H4K16). Thereby, inhibits the production of VEGFA and sprouting angiogenesis mediated by VEGFA ( ).
Subcellular locations: Cytoplasm, Nucleus
Predominantly cytoplasmic, but a minor proportion is also found in the nucleus.
Brain.