>cd04169 RF3 RF3 subfamily. Peptide chain release factor 3 (RF3) is a protein involved in the termination step of translation in bacteria. Termination occurs when class I release factors (RF1 or RF2) recognize the stop codon at the A-site of the ribosome and activate the release of the nascent polypeptide. The class II release factor RF3 then initiates the release of the class I RF from the ribosome. RF3 binds to the RF/ribosome complex in the inactive (GDP-bound) state. GDP/GTP exchange occurs, followed by the release of the class I RF. Subsequent hydrolysis of GTP to GDP triggers the release of RF3 from the ribosome. RF3 also enhances the efficiency of class I RFs at less preferred stop codons and at stop codons in weak contexts.

Probab=100.00 E-value=0 Score=516.39 Aligned_cols=263 Identities=31% Similarity=0.495 Sum_probs=238.5 Q ss_pred HEEEEEEECCCCCCHHHHHHHHHHHCCCCCCCCEE----CCCCEECCCHHHHHHHCCCEEEEEEEEEECCCCCCCEEEEE Q ss_conf 25279998687889778999999980873214220----17956137808898708537640799996077787138999 Q gi|254780264|r 9 DSRNFGIMAHIDAGKTTTTERILYYAGKSHKIGEV----HDGSATMDWMEQEQERGITITSASTTVFWPGRDGGQKKLTI 84 (701) Q Consensus 9 ~iRNv~iiaHvd~GKTTL~d~LL~~~g~i~~~g~v----~~g~~~~D~~~~E~eRgITi~ss~~sl~~~~~~~~~~~iNl 84 (701) T Consensus 1 ~~Rniai~gH~gaGKTtL~EalL~~~G~i~r~G~V~~~~~~g~t~~D~~~eE~~R~iSi~~~~~~~~w~-----~~kinl 75 (267) T cd04169 1 RRRTFAIISHPDAGKTTLTEKLLLFGGAIREAGAVKARKSRKHATSDWMEIEKQRGISVTSSVMQFEYR-----DCVINL 75 (267) T ss_pred CCCEEEEECCCCCCHHHHHHHHHHHCCCCCCCCEEEECCCCCCCCCCCHHHHHHCCCEEECCEEEEEEC-----CEEEEE T ss_conf 901799984799998999999998668633385463036888604688799986594486363788789-----989999 Q ss_pred EECCCCCCCHHHHHHHHHHHCEEEEEEECCCCCCHHHHHHHHHHHHCCCCEEEEECCCCCCCCCHHHHHHHHCCCCCCCC Q ss_conf 81798755289999999860456999955888883479999999873997899981767658755556664111102683 Q gi|254780264|r 85 IDTPGHVDFTMEVERSIRVTDGAIALLDSNAGVEPQTETVWRQADKYSVPRVIFCNKMDKMGADFYRSVEMISSRLGANP 164 (701) Q Consensus 85 IDTPGH~DF~~Ev~~aL~~~DgailvVDa~eGv~~qT~~vlr~~~~~~lp~ilvINKiDr~~~d~~~~l~~i~~~l~~~~ 164 (701) T Consensus 76 iDTPG~~DF~~e~~~al~v~D~AviVv~a~~GVe~~T~~~w~~a~~~~iP~iifINKmDr~~adf~~~l~~i~~~lg~~~ 155 (267) T cd04169 76 LDTPGHEDFSEDTYRTLTAVDSAVMVIDAAKGVEPQTRKLFEVCRLRGIPIITFINKLDREGRDPLELLDEIEEELGIDC 155 (267) T ss_pred EECCCCHHHHHHHHHHHHHHHCEEEEEECCCCCCHHHHHHHHHHHHCCCCEEEEEECCCCCCCCHHHHHHHHHHHHCCCC T ss_conf 97969778999999999886454799525666535589999999972999799985345678987899999999868775 Q ss_pred CEECCCCCCCCCCCEEEEEHHHHHHCCCCCCCCCCCEEEEECHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCHH Q ss_conf 30002345556653024422344311452226985138740043178899999988630023457899986327789988 Q gi|254780264|r 165 LVIQLPVGSESNFQGVIDLVEMKALLWKNEDLGSSWDVVEIPEDMKDSANSYRDKMIESIVELDDSAMDSYLQGESFSSD 244 (701) Q Consensus 165 ~~~~~p~~~~~~~~g~id~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~lle~i~~~dd~~~~~~l~~~~~~~~ 244 (701) T Consensus 156 vpi~lPig~~~~f~GvVDl~~~~a~~~~~~~~~~~~~~~~~~~~~-----------~~~~~e~~~~l~e~~~e~~el~~e 224 (267) T cd04169 156 TPLTWPIGMGKDFKGVYDRRTGEVELYDRGAGGATIAPEETKGLD-----------DPKLDELGGDLAEQLREELELLEG 224 (267) T ss_pred CEEEEEECCCCCEEEEEECCCCEEEEECCCCCCCEEEECCCCCCC-----------HHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 116877516994479998677989980078899545425788677-----------799999759999999733567753 Q ss_pred HHHHHHCCEEECCEEEECCCCCEECCCCHHHHHHHHHHHCCCH Q ss_conf 9873000003101003234310001221024889898717862 Q gi|254780264|r 245 RIRSLIRLGTISVKFFPVLCGSSFKNKGVQPLLDAVVDYLPSP 287 (701) Q Consensus 245 ~l~~~l~~~~~~~~~~pv~~gsa~~~~Gv~~LLd~i~~~lPsP 287 (701) T Consensus 225 ~~~~~~~e~i~~g~i~PV~~GSA~~~~GV~~LLd~I~~~lPsP 267 (267) T cd04169 225 AGPEFDQEAFLAGELTPVFFGSALNNFGVQELLDALVDLAPAP 267 (267) T ss_pred CCCHHHHHHHHHCCEEEEEEEECCCCCCHHHHHHHHHHHCCCC T ss_conf 6550519999829787899988898809999999999767899

HHsearch alignment for GI: 254780264 and conserved domain: cd04169