>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=97.24 E-value=0.00082 Score=45.38 Aligned_cols=157 Identities=18% Similarity=0.191 Sum_probs=83.5 Q ss_pred CCCEECCCCCCCCCHHHHHHHHHHHHCCCCCEEEEEECCC-CCCCCCCEECCCCCCCCCCCCCCCCCC-CCCEEECCCCC Q ss_conf 4201024466654257899998987235775069882246-787653100024563112334457663-22303223334 Q gi|254780831|r 95 KKFVAVASGKGGVGKSTTVVNIACALKNKGKNVAILDADV-YGPSIPKLLKISGKVEISDKKFLKPKE-NYGIKIMSMAS 172 (341) Q Consensus 95 ~~iiav~SgKGGVGKSt~s~nLa~ala~~G~~V~liDaDi-~~ps~~~~lg~~~~~~~~~~~~i~p~~-~~gi~~~s~g~ 172 (341) T Consensus 2 ~Rniai~-gH~gaGKTtL~EalL~~~G~i-~r~G~V~~~~~~g~t~------------~D---~~~eE~~R~iSi~~--- 61 (267) T cd04169 2 RRTFAII-SHPDAGKTTLTEKLLLFGGAI-REAGAVKARKSRKHAT------------SD---WMEIEKQRGISVTS--- 61 (267) T ss_pred CCEEEEE-CCCCCCHHHHHHHHHHHCCCC-CCCCEEEECCCCCCCC------------CC---CHHHHHHCCCEEEC--- T ss_conf 0179998-479999899999999866863-3385463036888604------------68---87999865944863--- Q ss_pred CCCCCCCCCCCCCCHHHHHHHHHHHHCCCCCCEEEEECCCCCCCCCCHHHHCC-CCCCEEEEECCCCCHHHHHHHHHHHH Q ss_conf 35522100013420247899986752137775899745564442100000002-23402674214431134566677764 Q gi|254780831|r 173 LVDENVAMIWRGPMVQSAIMHMLHNVVWGQLDFLLIDMPPGTGDAHLTIAQKI-PLSGVVIVSTPQDLALIDVKRAISMY 251 (341) Q Consensus 173 l~~~~~~~~~rg~~~~~~l~~~l~~~~w~~~D~liiD~ppG~gd~~lsl~~~~-~~~~~iiVttP~~~s~~da~r~~~~~ 251 (341) T Consensus 62 -----------------~----~~~~~w~~~kinliDTP-G~~DF~~e~~~al~v~D~AviVv~a~~GVe~~T~~~w~~a 119 (267) T cd04169 62 -----------------S----VMQFEYRDCVINLLDTP-GHEDFSEDTYRTLTAVDSAVMVIDAAKGVEPQTRKLFEVC 119 (267) T ss_pred -----------------C----EEEEEECCEEEEEEECC-CCHHHHHHHHHHHHHHHCEEEEEECCCCCCHHHHHHHHHH T ss_conf -----------------6----37887899899999796-9778999999999886454799525666535589999999 Q ss_pred HCCCCCHHHHHHHHCCCCCCCCCCEEECCCCCHHHHHHHHHCCCE-EEECCC Q ss_conf 001221144554420245877886651247765899999847978-988279 Q gi|254780831|r 252 QKMNIPIIGMIENMSYFLASDTGKKYDLFGNGGARFEAEKIGIPF-LESVPF 302 (341) Q Consensus 252 ~~~~~~i~GiV~NMs~~~~~~~~~~~~~fg~~~~~~~a~~~~i~~-lg~IP~ 302 (341) T Consensus 120 ~~~~iP~i-ifINK----mDr~~ad---f-~~~l~~i~~~lg~~~vpi~lPi 162 (267) T cd04169 120 RLRGIPII-TFINK----LDREGRD---P-LELLDEIEEELGIDCTPLTWPI 162 (267) T ss_pred HHCCCCEE-EEEEC----CCCCCCC---H-HHHHHHHHHHHCCCCCEEEEEE T ss_conf 97299979-99853----4567898---7-8999999998687751168775

HHsearch alignment for GI: 254780831 and conserved domain: cd04169