>cd06135 Orn Oligoribonuclease (Orn) is a DEDDh-type DnaQ-like 3'-5' exoribonuclease that is responsible for degrading small oligoribonucleotides to mononucleotides. It contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved pattern at ExoIII. These motifs are clustered around the active site and contain four conserved acidic residues that serve as ligands for the two metal ions required for catalysis. Orn is essential for E.coli survival. The human homolog, also called Sfn (small fragment nuclease), is able to hydrolyze short single-stranded RNA and DNA oligomers. It plays a role in cellular nucleotide recycling.

Probab=99.74 E-value=4.5e-17 Score=128.51 Aligned_cols=163 Identities=18% Similarity=0.201 Sum_probs=119.3 Q ss_pred EEEEECCCCCCCCCCCEEEEEEEEEECCCCEECCEEEEEEECCCCCCC--CCHHHHHHH---CCCHHHHHHCCCCHHHHH Q ss_conf 799975278898772604899999983897280400226621788877--857898985---799889960799979999 Q gi|254780661|r 5 FVIYDYETFGRDVALDRPAQFAGVRVDRQWEKIESTEVFFCKPADDYL--PDPEAVFIT---GITPQKALRDGVVEAEFS 79 (471) Q Consensus 5 ~v~~D~ETtG~~~~~~~iiq~~~i~~d~~~~~~~~~~~~~~~~~~~~~--p~p~a~~v~---git~~~~~~~~~~~~e~~ 79 (471) T Consensus 1 lvWiDlEmTGLd~~~d~IiEIA~ivTD~~L~~~~eg~~~vI~~~~~~L~~M~~w~~~~H~~sGL~~~v-~~s~~t~~~ae 79 (173) T cd06135 1 LVWIDLEMTGLDPEKDRILEIACIITDGDLNIIAEGPELVIHQPDEVLDGMDEWCTEMHTKSGLTERV-RASTVTLAQAE 79 (173) T ss_pred CEEEECCCCCCCCCCCEEEEEEEEEECCCCCEECCCCEEEEECCHHHHHHHHHHHHHHCCCCCHHHHH-HHCCCCHHHHH T ss_conf 95993303688888864899999998899877035631888288799877656877503324416788-73699999999 Q ss_pred HHHHHHHHCC---CCEEEEEECHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHCCCCCCCCCCC Q ss_conf 9999995117---9659995055789999999998507853213256887100158888655565321002444445443 Q gi|254780661|r 80 RRIHQFFSVP---NTCIIGYNNIRFDDYYSRNIFYRNFYDSYRWSWDNGNSRWDLLDVMRAIYAFSPDGIQWPSRDDGAT 156 (471) Q Consensus 80 ~~i~~~~~~~---~~~~ig~N~~~FD~~~lr~~~~r~~~~~y~~~~~~~~~~~D~l~~~~~~~~~~p~~~~~~~~~~~~~ 156 (471) T Consensus 80 ~~~l~Fi~~~~~~~~~pLaGNSV~~Dr~FL~k~mP~l--~~~l-hY----R~iDVSsikel~~rw~p~~~~--------- 143 (173) T cd06135 80 AELLEFIKKYVPKGKSPLAGNSVHQDRRFLDKYMPEL--EEYL-HY----RILDVSSIKELARRWYPEIYR--------- 143 (173) T ss_pred HHHHHHHHHHCCCCCCCCCCCCHHHHHHHHHHHCCHH--HHHC-CC----EEEEHHHHHHHHHHHCCHHHH--------- T ss_conf 9999999997679985315764877099999858067--9759-87----046677799999986916340--------- Q ss_pred CCCHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHHHHHH Q ss_conf 31089899871887643101333189999999999864 Q gi|254780661|r 157 SFKLQDLALANGIEHVNAHDAKADVYATLALVWLIREK 194 (471) Q Consensus 157 ~~kL~~la~~n~i~~~~aH~A~~D~~~t~~l~k~i~~~ 194 (471) T Consensus 144 ----------~~~~K~~~HrAl~DI~eSI~ELk~Yr~~ 171 (173) T cd06135 144 ----------KAPKKKGTHRALDDIRESIAELKYYREN 171 (173) T ss_pred ----------CCCCCCCCCCHHHHHHHHHHHHHHHHHH T ss_conf ----------0699877743498999999999999985

HHsearch alignment for GI: 254780661 and conserved domain: cd06135