>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=96.94 E-value=0.0023 Score=43.97 Aligned_cols=141 Identities=17% Similarity=0.183 Sum_probs=74.7 Q ss_pred CCEEECCCCCCCCHHHHHHHHHHHHHHCCCCEEEE---------ECCCCCHHHHHHHHHHHHHHCCCCCCCCCCCCCHHH Q ss_conf 41231135444442478999999985226742677---------434512456889999975303532122358661245 Q gi|254780709|r 111 PHVILVVGVNGVGKTTVIGKLSKKMSDAGLKVMLA---------AGDTFRSAAIDQLKIWADRTSADFVCSEIGSDAAAL 181 (321) Q Consensus 111 p~vil~vG~nG~GKTTT~aKLA~~~~~~g~kV~lv---------a~DtfR~aA~eQL~~~a~~~~v~~~~~~~~~dp~~v 181 (321) T Consensus 2 ~Rniai~gH~gaGKTtL~EalL~~~G~i~-r~G~V~~~~~~g~t~~D~---~~eE~~R------~iSi~----------- 60 (267) T cd04169 2 RRTFAIISHPDAGKTTLTEKLLLFGGAIR-EAGAVKARKSRKHATSDW---MEIEKQR------GISVT----------- 60 (267) T ss_pred CCEEEEECCCCCCHHHHHHHHHHHCCCCC-CCCEEEECCCCCCCCCCC---HHHHHHC------CCEEE----------- T ss_conf 01799984799998999999998668633-385463036888604688---7999865------94486----------- Q ss_pred HHHHHHHHHHHCCCEEEEECCCCCCCHHHHHHHHHHHHHHHHCCCCCCCCEEEEECCCCCCHHH-HHHHHHHHHHCCCC- Q ss_conf 4228999965148759986543332115778999989987630222343011231023352257-78999876435897- Q gi|254780709|r 182 AYEAFKQAQAKKVDVLIIDTAGRLHNNSILMAGIGKMIRVLKRLDPHAPHSVLQVLDATTGQNA-LRQVEMFHAVAGTT- 259 (321) Q Consensus 182 ~~~a~~~a~~~~~DvvliDTAGR~~~~~~lm~EL~ki~~v~~~~~~~~p~~~~lVlda~~gq~~-~~~a~~F~~~~~~~- 259 (321) T Consensus 61 --~~~~~~~w~~~kinliDTPG~----~DF~~e~~~al~v~--------D~AviVv~a~~GVe~~T~~~w~~a~~~~iP~ 126 (267) T cd04169 61 --SSVMQFEYRDCVINLLDTPGH----EDFSEDTYRTLTAV--------DSAVMVIDAAKGVEPQTRKLFEVCRLRGIPI 126 (267) T ss_pred --CCEEEEEECCEEEEEEECCCC----HHHHHHHHHHHHHH--------HCEEEEEECCCCCCHHHHHHHHHHHHCCCCE T ss_conf --363788789989999979697----78999999999886--------4547995256665355899999999729997 Q ss_pred EEEEECCCC-CCCHHHHH-HHHHHHCCCE Q ss_conf 699965457-87069999-9999976988 Q gi|254780709|r 260 GLIMTKMDG-TARGGGLI-PIVVTHKIPV 286 (321) Q Consensus 260 g~I~TKlD~-ta~~G~~l-s~~~~~~~Pi 286 (321) T Consensus 127 iifINKmDr~~adf~~~l~~i~~~lg~~~ 155 (267) T cd04169 127 ITFINKLDREGRDPLELLDEIEEELGIDC 155 (267) T ss_pred EEEEECCCCCCCCHHHHHHHHHHHHCCCC T ss_conf 99985345678987899999999868775

HHsearch alignment for GI: 254780709 and conserved domain: cd04169