>cd06137 DEDDh_RNase This group is composed of eukaryotic exoribonucleases that include PAN2, RNA exonuclease 1 (REX1 or Rex1p), REX3 (Rex3p), REX4 (or Rex4p), ISG20, and similar proteins. They 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. PAN2 is the catalytic subunit of poly(A) nuclease (PAN), a Pab1p-dependent 3'-5' exoribonuclease which plays an important role in the posttranscriptional maturation of pre-mRNAs. REX proteins are required for the processing and maturation of many RNA species, and ISG20 is an interferon-induced antiviral exonuclease with a strong preference for single-stranded RNA.

Probab=97.47 E-value=0.00021 Score=50.69 Aligned_cols=141 Identities=11% Similarity=0.139 Sum_probs=76.2 Q ss_pred CCCCCCCCCCCCCCCCCCCCEEECCCCCCCCCCCCCCEECCC---CCCCCC-------CCC-----CCCCC-HHHHHHHH Q ss_conf 232332224331100124420102577665443455023137---443334-------565-----00178-89999744 Q gi|254780277|r 390 ASFKIITDTMDAFHSKPIAIAISTLDQKDDTSFKVETIFIDL---SVHTSQ-------DST-----GKNTL-TKEILSYL 453 (976) Q Consensus 390 ia~DtETt~ld~~~~~ivGisls~~~~~~~~~~~~~~~yip~---~~~~~~-------d~~-----~~~~~-~~evl~~L 453 (976) T Consensus 1 VAlDCEMv~~~~~~~el~rvs~Vd~~~g~vl---~d~~VkP~~~V~Dy~T~~SGIt~~~l~~a~~~~~~~~~~~~a~~~l 77 (161) T cd06137 1 VALDCEMVGLADGDSEVVRISAVDVLTGEVL---IDSLVRPSVRVTDWRTRFSGVTPADLEEAAKAGKTIFGWEAARAAL 77 (161) T ss_pred CEEEEEEECCCCCCCEEEEEEEEECCCCEEE---EEECCCCCCCCCCCEEECCCCCHHHHHHHHHCCCCCCCHHHHHHHH T ss_conf 9796452332299725899999972799199---9863359843230143325799999854342153333199999999 Q ss_pred HHHHCCCCCHHHHCCCCHHHHHHHHCCCCCCCCCCHHHHHHHHC--C-CCCCCCHHHHHHHHCCCCCCCCCCCCCCCCCC Q ss_conf 44202221001100321237889861886664210023455431--6-87667724667762244422335654322210 Q gi|254780277|r 454 KKFFENEHFLKIGHNIKYDKLVLHRYGISMRGFEDIMLMSYVLD--S-GRSSHDIASIAQKWLSYTRKEILKSRKSSIPI 530 (976) Q Consensus 454 ~~lle~~~i~kIgHN~KfD~~~L~~~GI~l~~i~DTmlaayLLd--p-~~~~~~L~~la~~yL~~~~~e~~~~~k~~~~~ 530 (976) T Consensus 78 ~~~i~~~-tIlVGH~L~nDL~aL~~---~H~~viDTa~l~~~~~~~~~~~~~~sLk~La~~~L~~~IQ~g----~----- 144 (161) T cd06137 78 WKFIDPD-TILVGHSLQNDLDALRM---IHTRVVDTAILTREAVKGPLAKRQWSLRTLCRDFLGLKIQGG----G----- 144 (161) T ss_pred HHHCCCC-CEEEECCHHHHHHHHCC---CCCCEEECEEECCHHCCCCCCCCCHHHHHHHHHHHCHHHCCC----C----- T ss_conf 9745899-67985101310878627---798354320332001157888888669999999828775289----9----- Q ss_pred HHHCCHHHHHHHHHHHHHHHHHH Q ss_conf 00000123333222111112456 Q gi|254780277|r 531 DKISDSQVQEHAIENSNVILQLW 553 (976) Q Consensus 531 ~~i~~e~~~~Yaa~Da~~t~~L~ 553 (976) T Consensus 145 -------~gHds~EDA~aam~L~ 160 (161) T cd06137 145 -------EGHDSLEDALAAREVV 160 (161) T ss_pred -------CCCCCHHHHHHHHHHH T ss_conf -------8849199999999985

HHsearch alignment for GI: 254780277 and conserved domain: cd06137