RPSBLAST alignment for GI: 254780321 and conserved domain: TIGR00475

>gnl|CDD|129567 TIGR00475, selB, selenocysteine-specific elongation factor SelB. In prokaryotes, the incorporation of selenocysteine as the 21st amino acid, encoded by TGA, requires several elements: SelC is the tRNA itself, SelD acts as a donor of reduced selenium, SelA modifies a serine residue on SelC into selenocysteine, and SelB is a selenocysteine-specific translation elongation factor. 3-prime or 5-prime non-coding elements of mRNA have been found as probable structures for directing selenocysteine incorporation. This model describes the elongation factor SelB, a close homolog rf EF-Tu. It may function by replacing EF-Tu. A C-terminal domain not found in EF-Tu is in all SelB sequences in the seed alignment except that from Methanococcus jannaschii. This model does not find an equivalent protein for eukaryotes. Length = 581
 Score = 94.9 bits (236), Expect = 6e-20
 Identities = 64/242 (26%), Positives = 104/242 (42%), Gaps = 28/242 (11%)

Query: 13  NFSIVAHIDHGKSTLADRFIQHCRGLTEREMSSQVLDNMDIERERGITIKAQTVRLNYTS 72
             +   H+DHGK+TL        + LT         D +  E++RG+TI      L +  
Sbjct: 2   IIATAGHVDHGKTTLL-------KALTGIAA-----DRLPEEKKRGMTID-----LGFAY 44

Query: 73  TDAKDYQLNLIDTPGHVDFTYEVSRSLSACEGSLLVVDATQGVEAQTLANVYQA-IDNNH 131
               DY+L  ID PGH  F           + +LLVVDA +GV  QT  ++    +    
Sbjct: 45  FPLPDYRLGFIDVPGHEKFISNAIAGGGGIDAALLVVDADEGVMTQTGEHLAVLDLLGIP 104

Query: 132 EIITVLNKAD-LPSADPDRVKKQI----EETIGISTEDALLVSAKTGEGIPLLLERIVQQ 186
             I V+ KAD +   +  R +  +       I +        SAKTG+GI  L + + + 
Sbjct: 105 HTIVVITKADRVNEEEIKRTEMFMKQILNSYIFLKNAKIFKTSAKTGQGIGELKKEL-KN 163

Query: 187 LPSPTSPEGANAPLKALLIDSWYNSYLGVMVLVR--IINGQLTKGQSIRLMGTNAKYQVE 244
           L      +    PL+ + ID  +    G   +V     +G++  G ++RL+  N + +V+
Sbjct: 164 LLESLDIKRIQKPLR-MAIDRAF-KVKGAGTVVTGTAFSGEVKVGDNLRLLPINHEVRVK 221

Query: 245 RI 246
            I
Sbjct: 222 AI 223