HHsearch alignment for GI: 254780725 and conserved domain: cd01889

>cd01889 SelB_euk SelB subfamily. SelB is an elongation factor needed for the co-translational incorporation of selenocysteine. Selenocysteine is coded by a UGA stop codon in combination with a specific downstream mRNA hairpin. In bacteria, the C-terminal part of SelB recognizes this hairpin, while the N-terminal part binds GTP and tRNA in analogy with elongation factor Tu (EF-Tu). It specifically recognizes the selenocysteine charged tRNAsec, which has a UCA anticodon, in an EF-Tu like manner. This allows insertion of selenocysteine at in-frame UGA stop codons. In E. coli SelB binds GTP, selenocysteyl-tRNAsec and a stem-loop structure immediately downstream of the UGA codon (the SECIS sequence). The absence of active SelB prevents the participation of selenocysteyl-tRNAsec in translation. Archaeal and animal mechanisms of selenocysteine incorporation are more complex. Although the SECIS elements have different secondary structures and conserved elements between archaea and euk
Probab=93.21  E-value=0.26  Score=27.25  Aligned_cols=66  Identities=11%  Similarity=0.072  Sum_probs=50.6

Q ss_pred             HCCCEEEECCCCC--CCHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCCCCEEEEECCCCC
Q ss_conf             1288899738888--89899999862012543578776889999999999998198767538999565898
Q gi|254780725|r  273 QIFPLVILDVPHV--WNSWTQEVLTLSDKVVITTSLDLAGLRNSKNLIDVLKKLRPADKPPYLVLNQVKTP  341 (427)
Q Consensus       273 ~~yd~VIiD~p~~--~~~~~~~~L~~AD~vviV~~p~~~slr~a~~ll~~l~~~~~~~~~~~iVlNr~~~~  341 (427)
T Consensus        66 ~~~~i~~IDtPGH~df~~~~~~g~~~~D~ailvVda~~G~~~QT~eh~~~~~~~~~---~~iv~iNK~D~v  133 (192)
T cd01889          66 ENLQITLVDCPGHASLIRTIIGGAQIIDLMLLVVDATKGIQTQTAECLVIGEILCK---KLIVVLNKIDLI  133 (192)
T ss_pred             CCEEEEEEECCCCHHHHHHHHHHHHHCCCCEEEEECCCCCCHHHHHHHHHHHHCCC---CEEEEEECCCCC
T ss_conf             74589998779838899888888743265279998788887899999999998589---979999741278