>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=99.94 E-value=5.9e-27 Score=202.34 Aligned_cols=125 Identities=30% Similarity=0.445 Sum_probs=111.7 Q ss_pred EEEEEECCCCCHHHHHHHHHHHH--------H----------HH----CCCCCCEECCCEEEEECCCCEEEEEECCCHHH Q ss_conf 38986236850446777886422--------2----------10----01231000121499951784388885166157 Q gi|254780787|r 385 VVTIMGHVDHGKTSLLDAIRKAD--------V----------AK----GEIGGITQHIGAYQVAYQGKNITFLDTPGHAA 442 (884) Q Consensus 385 vv~v~ghvd~GKt~lld~~r~~~--------~----------~~----~e~ggitq~iga~~~~~~~~~~~~iDtPGh~~ 442 (884) T Consensus 4 niai~gH~gaGKTtL~EalL~~~G~i~r~G~V~~~~~~g~t~~D~~~eE~~R~iSi~~~~~~~~w~~~kinliDTPG~~D 83 (267) T cd04169 4 TFAIISHPDAGKTTLTEKLLLFGGAIREAGAVKARKSRKHATSDWMEIEKQRGISVTSSVMQFEYRDCVINLLDTPGHED 83 (267) T ss_pred EEEEECCCCCCHHHHHHHHHHHCCCCCCCCEEEECCCCCCCCCCCHHHHHHCCCEEECCEEEEEECCEEEEEEECCCCHH T ss_conf 79998479999899999999866863338546303688860468879998659448636378878998999997969778 Q ss_pred HHHHHHHHHHCCCCEEEEEECCCCCCHHHHHHHHHHHHCCCCEEEECCCCCCCCCCCCHHHHHHHCC Q ss_conf 8999866642068059999836674023577789899709941561233124433200022100001 Q gi|254780787|r 443 FYEMRARGARVTDIAVLVLAADEEIMPQAIESINHAKAADVSIIVAINKIDKLGADPQKVRMSLLKH 509 (884) Q Consensus 443 f~~~r~rg~~~~d~~ilvv~~~~g~~~qt~e~~~~~~~~~~p~iva~nk~d~~~~~~~~~~~~~~~~ 509 (884) T Consensus 84 F~~e~~~al~v~D~AviVv~a~~GVe~~T~~~w~~a~~~~iP~iifINKmDr~~adf~~~l~~i~~~ 150 (267) T cd04169 84 FSEDTYRTLTAVDSAVMVIDAAKGVEPQTRKLFEVCRLRGIPIITFINKLDREGRDPLELLDEIEEE 150 (267) T ss_pred HHHHHHHHHHHHHCEEEEEECCCCCCHHHHHHHHHHHHCCCCEEEEEECCCCCCCCHHHHHHHHHHH T ss_conf 9999999998864547995256665355899999999729997999853456789878999999998

HHsearch alignment for GI: 254780787 and conserved domain: cd04169