>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=97.73 E-value=0.0014 Score=41.20 Aligned_cols=156 Identities=15% Similarity=0.143 Sum_probs=93.8 Q ss_pred EEEEEEECCCCCCHHHHHHHHHHHHHHHCCCCEEEEECCCCCCCCHHHCCCCCCCCHHHHHCCCCCHHHHHHHHHHHCCC Q ss_conf 37999746988775689999999999626994999978798986033438998789888631845612433765320248 Q gi|254780725|r 162 CSISFIGSRGGVGSSTIAHNCAFSIASVFAMETLLADLDLPYGTANINFDKDPINSISDAIYPVGRIDKAFVSRLPVFYA 241 (427) Q Consensus 162 rvIav~g~KGGvGkTTiA~nLA~~LA~~~~~~VlLvDlDl~~g~~~~~l~~~~~~~l~d~l~~~~rlD~~~l~~~l~~~~ 241 (427) T Consensus 3 Rniai~g-H~gaGKTtL~EalL~~~-G~-i~r~G~V~~~~~~g~t~~D~------------------~~eE~~R------ 55 (267) T cd04169 3 RTFAIIS-HPDAGKTTLTEKLLLFG-GA-IREAGAVKARKSRKHATSDW------------------MEIEKQR------ 55 (267) T ss_pred CEEEEEC-CCCCCHHHHHHHHHHHC-CC-CCCCCEEEECCCCCCCCCCC------------------HHHHHHC------ T ss_conf 1799984-79999899999999866-86-33385463036888604688------------------7999865------ Q ss_pred CCEEEEECCCCCCCHHCCCHHHHHHHHHHHHHCCCEEEECCCCCCCH--HHHHHHHHCCCCCCCCCCCHHHHHHHHHHHH Q ss_conf 98068724876120320799999998999851288899738888898--9999986201254357877688999999999 Q gi|254780725|r 242 ENLSILTAPAMLSRTYDFDEKMIVPVLDILEQIFPLVILDVPHVWNS--WTQEVLTLSDKVVITTSLDLAGLRNSKNLID 319 (427) Q Consensus 242 ~gL~lL~a~~~~~~~~~~~~~~l~~ll~~l~~~yd~VIiD~p~~~~~--~~~~~L~~AD~vviV~~p~~~slr~a~~ll~ 319 (427) T Consensus 56 -~iSi~~~~~~~~-----------------w~~~kinliDTPG~~DF~~e~~~al~v~D~AviVv~a~~GVe~~T~~~w~ 117 (267) T cd04169 56 -GISVTSSVMQFE-----------------YRDCVINLLDTPGHEDFSEDTYRTLTAVDSAVMVIDAAKGVEPQTRKLFE 117 (267) T ss_pred -CCEEECCEEEEE-----------------ECCEEEEEEECCCCHHHHHHHHHHHHHHHCEEEEEECCCCCCHHHHHHHH T ss_conf -944863637887-----------------89989999979697789999999998864547995256665355899999 Q ss_pred HHHHCCCCCCCCEEEEECCCCCCC-CHHHHHHHHHHHCCCE-EEEECC Q ss_conf 999819876753899956589875-2005999999848953-799068 Q gi|254780725|r 320 VLKKLRPADKPPYLVLNQVKTPKK-PEISISDFCAPLGITP-SAIIPF 365 (427) Q Consensus 320 ~l~~~~~~~~~~~iVlNr~~~~~~-~~i~~~~~~~~lg~~~-~~~IP~ 365 (427) T Consensus 118 ~a~~~~i---P~iifINKmDr~~adf~~~l~~i~~~lg~~~vpi~lPi 162 (267) T cd04169 118 VCRLRGI---PIITFINKLDREGRDPLELLDEIEEELGIDCTPLTWPI 162 (267) T ss_pred HHHHCCC---CEEEEEECCCCCCCCHHHHHHHHHHHHCCCCCEEEEEE T ss_conf 9997299---97999853456789878999999998687751168775

HHsearch alignment for GI: 254780725 and conserved domain: cd04169