>cd01886 EF-G Elongation factor G (EF-G) subfamily. Translocation is mediated by EF-G (also called translocase). The structure of EF-G closely resembles that of the complex between EF-Tu and tRNA. This is an example of molecular mimicry; a protein domain evolved so that it mimics the shape of a tRNA molecule. EF-G in the GTP form binds to the ribosome, primarily through the interaction of its EF-Tu-like domain with the 50S subunit. The binding of EF-G to the ribosome in this manner stimulates the GTPase activity of EF-G. On GTP hydrolysis, EF-G undergoes a conformational change that forces its arm deeper into the A site on the 30S subunit. To accommodate this domain, the peptidyl-tRNA in the A site moves to the P site, carrying the mRNA and the deacylated tRNA with it. The ribosome may be prepared for these rearrangements by the initial binding of EF-G as well. The dissociation of EF-G leaves the ribosome ready to accept the next aminoacyl-tRNA into the A site. This group conta

Probab=96.15 E-value=0.035 Score=34.52 Aligned_cols=89 Identities=20% Similarity=0.213 Sum_probs=51.5 Q ss_pred EEEEEECCCCCHHHHHHHHHCCCCCCCCCCCCCCCCCCEEEEE----CCC---HHHHHHHHHCC---CCEEEEEEEEEEE Q ss_conf 4867528887888999987404898736668674488337997----685---55877764218---6502335799985 Q gi|254780226|r 4 KCGIIGLPNVGKSTLFNALTRTASAQAANYPFCTIEPNSGEVA----VPD---PRMHKLAEIAE---SKDLVPTRMSFVD 73 (367) Q Consensus 4 kiGlvG~pn~GKST~f~alT~~~~~~~~~ypFtTi~pn~g~~~----v~d---~~~~~l~~~~~---~~~~~p~~i~~iD 73 (367) T Consensus 1 Niai~gH~gaGKTtL~EalL~~a--g~i~r~--------G~v~~g~tv~D~~~eE~~R~isi~~~~~~~~w~~~~inliD 70 (270) T cd01886 1 NIGIIAHIDAGKTTTTERILYYT--GRIHKI--------GEVHGGGATMDFMEQERERGITIQSAATTCFWKDHRINIID 70 (270) T ss_pred CEEEEECCCCCHHHHHHHHHHHC--CCCCCC--------CEECCCCCCCCCCHHHHHCCCEEECCEEEEEECCEEEEEEE T ss_conf 98999689999889999999866--873558--------15538975566848898768707336689998998999986 Q ss_pred CCCCCCCCCCCCCCHHHHHHHHHCCCEEEEEECCCC Q ss_conf 122354322246632899998730374788501234 Q gi|254780226|r 74 IAGLVRGASKGEGLGNQFLAHIREVDAIIHVLRCFK 109 (367) Q Consensus 74 vaGLv~gA~~G~GlGN~FL~~ir~aDalihVVdaf~ 109 (367) T Consensus 71 TPG~~DF~-------~e~~~aL~~~D~AviVv~a~~ 99 (270) T cd01886 71 TPGHVDFT-------IEVERSLRVLDGAVAVFDAVA 99 (270) T ss_pred CCCCHHHH-------HHHHHHHHHHCEEEEEEECCC T ss_conf 96967889-------999999877555999984676

HHsearch alignment for GI: 254780226 and conserved domain: cd01886