>cd06133 ERI-1_3'hExo_like This subfamily is composed of Caenorhabditis elegans ERI-1, human 3' exonuclease (3'hExo), Drosophila exonuclease snipper (snp), and similar proteins from eukaryotes and bacteria. These are DEDDh-type DnaQ-like 3'-5' exonucleases containing 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. ERI-1 has been implicated in the degradation of small interfering RNAs (RNAi). 3'hExo participates in the degradation of histone mRNAs. Snp is a non-essential exonuclease that efficiently degrades structured RNA and DNA substrates as long as there is a minimum of 2 nucleotides in the 3' overhang to initiate degradation. Snp is not a functional homolog of either ERI-1 or 3'hExo.

Probab=99.95 E-value=1.5e-26 Score=189.45 Aligned_cols=168 Identities=13% Similarity=0.017 Sum_probs=132.3 Q ss_pred EEEEECCCCCCCCCCCE-----EEEEEEEEEC-CCCEECCEEEEEEECCCCCCCCCHHHHHHHCCCHHHHHHCCCCHHHH Q ss_conf 79997527889877260-----4899999983-89728040022662178887785789898579988996079997999 Q gi|254780661|r 5 FVIYDYETFGRDVALDR-----PAQFAGVRVD-RQWEKIESTEVFFCKPADDYLPDPEAVFITGITPQKALRDGVVEAEF 78 (471) Q Consensus 5 ~v~~D~ETtG~~~~~~~-----iiq~~~i~~d-~~~~~~~~~~~~~~~~~~~~~p~p~a~~v~git~~~~~~~~~~~~e~ 78 (471) T Consensus 1 yvv~D~EtTg~~~~~~~~~~~eIIeIgav~vd~~~~~i~~~f~~-lI~P~~~~~i~~~i~~itGIt~~~l~~ap-~~~~v 78 (176) T cd06133 1 YLVIDFEATCWEGNSKPDYPNEIIEIGAVLVDVKTKEIIDTFSS-YVKPVINPKLSDFCTELTGITQEDVDNAP-SFPEV 78 (176) T ss_pred CEEEEEECCCCCCCCCCCCCCCEEEEEEEEEECCCCEEEEEEEE-EECCCCCCCCCHHHHHHHCCCHHHHHCCC-CHHHH T ss_conf 98999726899878898999707999999998799979899999-97587688789889977381887870786-39999 Q ss_pred HHHHHHHHHCCCCEEEEEECHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHCCCCCCCCCCCCC Q ss_conf 99999995117965999505578999999999850785321325688710015888865556532100244444544331 Q gi|254780661|r 79 SRRIHQFFSVPNTCIIGYNNIRFDDYYSRNIFYRNFYDSYRWSWDNGNSRWDLLDVMRAIYAFSPDGIQWPSRDDGATSF 158 (471) Q Consensus 79 ~~~i~~~~~~~~~~~ig~N~~~FD~~~lr~~~~r~~~~~y~~~~~~~~~~~D~l~~~~~~~~~~p~~~~~~~~~~~~~~~ 158 (471) T Consensus 79 ~~~f~~~i~~~~-~~~~~~~~~fD~~~l~~~~~~~~~~~~~---~~~~~~iD~~~~~~~~---~~----------~~~~~ 141 (176) T cd06133 79 LKEFLEWLGKNG-KYAFVTWGDWDLKDLLQNQCKYKIINLP---PFFRQWIDLKKEFAKF---YG----------LKKRT 141 (176) T ss_pred HHHHHHHHCCCC-CEEEEEECCCHHHHHHHHHHHHCCCCCC---CCCCCHHHHHHHHHHH---HC----------CCCCC T ss_conf 999999972698-5799960600299999999997899887---3011120499999998---18----------88898 Q ss_pred CHHHHHHHHCCCCC-CCCHHHHHHHHHHHHHHHH Q ss_conf 08989987188764-3101333189999999999 Q gi|254780661|r 159 KLQDLALANGIEHV-NAHDAKADVYATLALVWLI 191 (471) Q Consensus 159 kL~~la~~n~i~~~-~aH~A~~D~~~t~~l~k~i 191 (471) T Consensus 142 sL~~l~~~~gi~~~~~~H~AL~DA~~ta~v~~~l 175 (176) T cd06133 142 GLSKALEYLGLEFEGRHHRGLDDARNIARILKRL 175 (176) T ss_pred CHHHHHHHCCCCCCCCCCCCHHHHHHHHHHHHHH T ss_conf 9999999869999998858599999999999987

HHsearch alignment for GI: 254780661 and conserved domain: cd06133