O-phosphoseryl-tRNASec kinase (, ''PSTK'', ''phosphoseryl-tRNA
erec kinase'', ''phosphoseryl-tRNASec kinase'') is an
enzyme with
systematic name ''ATP:L-seryl-tRNASec O-phosphotransferase''.
This enzyme
catalyses the following
chemical reaction
: ATP + L-seryl-tRNASec
ADP + O-phospho-L-seryl-tRNASec
In
archaea
Archaea ( ; singular archaeon ) is a domain of single-celled organisms. These microorganisms lack cell nuclei and are therefore prokaryotes. Archaea were initially classified as bacteria, receiving the name archaebacteria (in the Archaebac ...
and
eukarya selenocysteine
Selenocysteine (symbol Sec or U, in older publications also as Se-Cys) is the 21st proteinogenic amino acid. Selenoproteins contain selenocysteine residues. Selenocysteine is an analogue of the more common cysteine with selenium in place of the s ...
formation is achieved by a two-step process.
References
External links
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