>cd06147 Rrp6p_like_exo Yeast Rrp6p and its human homolog, the Polymyositis/scleroderma autoantigen 100kDa (PM/Scl-100), are exosome-associated proteins involved in the degradation and processing of precursors to stable RNAs. Both proteins contain a DEDDy-type DnaQ-like 3'-5' exonuclease domain possessing three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific YX(3)D pattern at ExoIII. The 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. PM/Scl-100, an autoantigen present in the nucleolar compartment of the cell, reacts with autoantibodies produced by about 50% of patients with polymyositis-scleroderma overlap syndrome.

Probab=99.63 E-value=3.2e-14 Score=112.27 Aligned_cols=156 Identities=16% Similarity=0.098 Sum_probs=111.3 Q ss_pred CEEEEEECCCCCCCCCCCCCHHHCCCCEEEEEEEEECCCEEEEEECCCCCHHHHHHHHHHCCCCCEEEEEEHHHHHHHHH Q ss_conf 78999804067887000460000268829999999838228999788842217999998648898199863077599999 Q gi|254780127|r 2 SKLFIDIETRSPQPLPKVGVWAYAEQAVITLCAYAWDDEPVKLWDRTEQSAMPSDLLQYLRDETVMCVAHNSLFERILFK 81 (675) Q Consensus 2 k~l~lD~ET~s~~dl~~~Gl~~y~~~~~I~~i~~a~~~~~~~~~d~~~~~~~~~~l~~~L~~~~~~kv~HNa~FD~~vL~ 81 (675) T Consensus 25 ~~ialDtE~~~--------~~~~--~~~l~LiQiat~~-~~yliD~l~l~~~~~~L~~ll~~~~I~KV~H~~~~Dl~~L~ 93 (192) T cd06147 25 KEIAVDLEHHS--------YRSY--LGFTCLMQISTRE-EDYIVDTLKLRDDMHILNEVFTDPNILKVFHGADSDIIWLQ 93 (192) T ss_pred CEEEEECCCCC--------CCCC--CCEEEEEEEECCC-CCEEEEECCCCCCHHHHHHHHCCCCEEEEEECHHHHHHHHH T ss_conf 96999797378--------8569--9827999995099-88798743430037999999759883799855787799999 Q ss_pred HHCCCCCCCCCEEEHHHHHHHHCCC-CCHHHHHH-HHCCCCCCHHHHHCHHHHHHHHHHHHHHCCCCCCCCCCHHHHHHH Q ss_conf 8629987865045458899985889-99789999-808898652766376576641002332013453112587689998 Q gi|254780127|r 82 KTLGIDIPSKRWICTSVLARTNGLP-SSLKNACL-ALNFSEHLTKMEEGKALIARFCKGSIDSPPYDCTRANHVQAWQLF 159 (675) Q Consensus 82 ~~lGi~i~~~~~~DTmi~A~~l~~p-~sL~~la~-~lgl~~~~~kd~~gk~li~~~~~~~~~~~~~~~~~~~~~~~~~~~ 159 (675) T Consensus 94 ~~~gi~~--~n~fDT~iaa~~l~~~~~sL~~Lv~~~lg~~l~K~~---------------q~-----SdW~~RP-Ls~~Q 150 (192) T cd06147 94 RDFGLYV--VNLFDTGQAARVLNLPRHSLAYLLQKYCNVDADKKY---------------QL-----ADWRIRP-LPEEM 150 (192) T ss_pred HHHCCCC--CCCHHHHHHHHHHCCCCHHHHHHHHHHHCCCCCCCC---------------EE-----CCCCCCC-CCHHH T ss_conf 9858987--660428999998488811199999999395887323---------------11-----4379998-99999 Q ss_pred HHHHHHHHHHHHHHHHHHCCC-HHHHHHHHHHH Q ss_conf 988775399999999872002-14310178999 Q gi|254780127|r 160 GEYCKRDVEATRELFKRLIPL-SDGERDLWLLD 191 (675) Q Consensus 160 ~~Ya~~Dv~~~~~L~~~L~~~-~~~E~~l~~~~ 191 (675) T Consensus 151 l~YAA~Dv~~Ll~ly~~L~~~L~e~~~~~~~~~ 183 (192) T cd06147 151 IKYAREDTHYLLYIYDRLRNELLERANALAPNL 183 (192) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHH T ss_conf 999999999999999999999998428641678

HHsearch alignment for GI: 254780127 and conserved domain: cd06147