Review Article
Selenocysteine, Pyrrolysine, and the Unique Energy Metabolism of Methanogenic Archaea
Figure 3
Schematic representation of selenocysteine biosynthesis and incorporation in Archaea. UTR, -untranslated region; PSTK, seryl-tRN kinase, [Se], reduced Se-species; SelB, Sec-specific elongation factor; SepSecS, O-phosphoseryl-tRN:selenocysteine synthase; Ser, serine; Se-P, seleno(mono)phosphate; SerRS, seryl-tRNA synthetase; SPS, selenophosphate synthetase; see text for details.