Selenocysteine-specific elongation factor (SelB) is a transcription factor necessary for the incorporation of selenocysteine into proteins. This entry represents domain III of archaeal SelB, which adopts a beta-barrel fold and is homologous to domain III of EF-Tu [1].

1: Selenocysteine tRNA-specific elongation factor SelB is a structural chimaera of elongation and initiation factors. Leibundgut M, Frick C, Thanbichler M, Bock A, Ban N; EMBO J. 2005;24:11-22. PMID:15616587