>cd06144 REX4_like This subfamily is composed of RNA exonuclease 4 (REX4 or Rex4p), XPMC2, Interferon (IFN) Stimulated Gene product of 20 kDa (ISG20), and similar proteins. REX4 is involved in pre-rRNA processing. It controls the ratio between the two forms of 5.8S rRNA in yeast. XPMC2 is a Xenopus gene which was identified through its ability to correct a mitotic defect in fission yeast. The human homolog of XPMC2 (hPMC2) may be involved in angiotensin II-induced adrenal cell cycle progression and cell proliferation. ISG20 is an IFN-induced antiviral exonuclease with a strong preference for single-stranded RNA and minor activity towards single-stranded DNA. These proteins 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 fo

Probab=98.25 E-value=1.3e-06 Score=66.71 Aligned_cols=138 Identities=13% Similarity=0.199 Sum_probs=80.6 Q ss_pred CCCCCCCCCCCCCCCC--CCCCEEECCCCCCCCCCCCCCEECC---CC------CCCCCCCCCCCCCHHHHHHHHHHHHC Q ss_conf 2323322243311001--2442010257766544345502313---74------43334565001788999974444202 Q gi|254780277|r 390 ASFKIITDTMDAFHSK--PIAIAISTLDQKDDTSFKVETIFID---LS------VHTSQDSTGKNTLTKEILSYLKKFFE 458 (976) Q Consensus 390 ia~DtETt~ld~~~~~--ivGisls~~~~~~~~~~~~~~~yip---~~------~~~~~d~~~~~~~~~evl~~L~~lle 458 (976) T Consensus 1 valDcEm~g~~~~~~~~~larv~vvd~~g~--~v~--d~~V~P~~~V~d~~T~~sGIt~~~l~~a~~~~~v~~~~~~~l~ 76 (152) T cd06144 1 VALDCEMVGVGPDGSESALARVSIVNEDGN--VVY--DTYVKPQEPVTDYRTAVSGIRPEHLKDAPDFEEVQKKVAELLK 76 (152) T ss_pred CEEEEEECCCCCCCCEEEEEEEEEEECCCC--EEE--EEEECCCCCCCCCCEEECCCCHHHHCCCCCHHHHHHHHHHHHC T ss_conf 989876033528998789999999967899--998--8723699767876356248579997389999999999999853 Q ss_pred CCCCHHHHCCCCHHHHHHHHCCCCC--CCCCCHHHHHHHHCC-CCCCCCHHHHHHHHCCCCCCCCCCCCCCCCCCHHHCC Q ss_conf 2210011003212378898618866--642100234554316-8766772466776224442233565432221000000 Q gi|254780277|r 459 NEHFLKIGHNIKYDKLVLHRYGISM--RGFEDIMLMSYVLDS-GRSSHDIASIAQKWLSYTRKEILKSRKSSIPIDKISD 535 (976) Q Consensus 459 ~~~i~kIgHN~KfD~~~L~~~GI~l--~~i~DTmlaayLLdp-~~~~~~L~~la~~yL~~~~~e~~~~~k~~~~~~~i~~ 535 (976) T Consensus 77 ~~--ilVGH~l~~Dl~~L~---l~~~~~~i~DT~~~~~~~~~~~~~~~sLk~L~~~~Lg~~Iq~----~----------- 136 (152) T cd06144 77 GR--ILVGHALKNDLKVLK---LDHPKKLIRDTSKYKPLRKTAKGKSPSLKKLAKQLLGLDIQE----G----------- 136 (152) T ss_pred CC--EEEECCHHHHHHHHH---CCCCCCEEEEEEEEHHHHHCCCCCCCCHHHHHHHHCCCCCCC----C----------- T ss_conf 88--798606464699962---438876068855642245416889927999999985885899----7----------- Q ss_pred HHHHHHHHHHHHHHHHHHH Q ss_conf 1233332221111124567 Q gi|254780277|r 536 SQVQEHAIENSNVILQLWL 554 (976) Q Consensus 536 e~~~~Yaa~Da~~t~~L~~ 554 (976) T Consensus 137 ---~H~s~eDA~at~~Lfk 152 (152) T cd06144 137 ---EHSSVEDARAAMRLYR 152 (152) T ss_pred ---CCCCHHHHHHHHHHHC T ss_conf ---9696999999999859

HHsearch alignment for GI: 254780277 and conserved domain: cd06144