>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=1.3e-37 Score=252.28 Aligned_cols=139 Identities=30% Similarity=0.418 Sum_probs=118.4 Q ss_pred EEEEEECCCCCHHHHHHHHHHHHHH------H----HHCCCCCCCCHHHHHCCCEEEEEEEEEECCCEEEEEEECCCCHH Q ss_conf 9999904689887899999987644------4----20013126868698629206378999821990899984787302 Q gi|254780150|r 14 GLSTIGHVDHGKTTLTAAITKYYSE------E----KKEYGDIDSAPEEKLRGITIATAHVSYETDKRFYSHIDCPGHAD 83 (392) Q Consensus 14 ni~~iGhvd~GKSTL~~~L~~~~~~------~----~~~~~~~D~~~~E~~rGiTi~~~~~~~~~~~~~i~iiD~PGH~~ 83 (392) 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 HHHHHHHHHHCCCCEEEEECCCCCCCCCHHHHHHHHHHCCCCCEEEEECCCCCCCCHHHHHHCCCCCCEEEE Q ss_conf 467798774002331452012344332106778888631876023310023335612221101232100111 Q gi|254780150|r 84 YVKNMITGATQADGAILVCAAEDGPKPQTREHILLARQIGISSIVVYMNKVDAVDDDELLDISEYEIRDLLK 155 (392) Q Consensus 84 f~~~mi~g~~~~D~ailvVda~~G~~~QT~eh~~l~~~lgi~~iIv~iNKmD~v~~~~~~~~i~~~i~~~l~ 155 (392) T Consensus 84 F~~e~~~al~v~D~AviVv~a~~GVe~~T~~~w~~a~~~~iP~i-ifINKmDr~~ad--f~~~l~~i~~~lg 152 (267) T cd04169 84 FSEDTYRTLTAVDSAVMVIDAAKGVEPQTRKLFEVCRLRGIPII-TFINKLDREGRD--PLELLDEIEEELG 152 (267) T ss_pred HHHHHHHHHHHHHCEEEEEECCCCCCHHHHHHHHHHHHCCCCEE-EEEECCCCCCCC--HHHHHHHHHHHHC T ss_conf 99999999988645479952566653558999999997299979-998534567898--7899999999868

HHsearch alignment for GI: 254780150 and conserved domain: cd04169