>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=99.68 E-value=2.9e-15 Score=117.21 Aligned_cols=154 Identities=16% Similarity=0.080 Sum_probs=111.1 Q ss_pred CEEEEEECCCCCCCCCCCCCHHHCCCCEEEEEEEEECCEEEEEEECCCCHHHHHHHHHHHCCCCCEEEEEEHHHHHHHHH Q ss_conf 68999814178987000440011279819999999848039999788810437999998638898199973077499999 Q gi|254781193|r 2 ATLFIDFETRSPIDLTKCGICKYAEDVCVILFAFGFDDHPVELWDCVHDPVMPQVLKEALENTDVTIVAHNSYFERTVLK 81 (675) Q Consensus 2 k~i~lD~ET~~~~dl~~~Gl~~y~~~~~i~~i~~a~~~~~v~~~d~~~~~~~~~~l~~~L~~~~~~kV~HNa~FD~~~L~ 81 (675) T Consensus 25 ~~ialDtE~~~~--------~~~--~~~l~LiQiat~~-~~yliD~l~l~~~~~~L~~ll~~~~I~KV~H~~~~Dl~~L~ 93 (192) T cd06147 25 KEIAVDLEHHSY--------RSY--LGFTCLMQISTRE-EDYIVDTLKLRDDMHILNEVFTDPNILKVFHGADSDIIWLQ 93 (192) T ss_pred CEEEEECCCCCC--------CCC--CCEEEEEEEECCC-CCEEEEECCCCCCHHHHHHHHCCCCEEEEEECHHHHHHHHH T ss_conf 969997973788--------569--9827999995099-88798743430037999999759883799855787799999 Q ss_pred HHCCCCCCCCCEEEHHHHHHHHCC-CCCHHHHHH-HCCCCCCHHHHHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHHH Q ss_conf 860899884203316889998678-999689899-829981100437999986202112343323467858532899999 Q gi|254781193|r 82 ACFNLDIPIHRWICTLVLARSNGL-PSALKAVGE-ALKLSSQKMEEGKELIARFCKGETHECLYDRNKPNHREAWRLFGE 159 (675) Q Consensus 82 ~~~Gi~i~~~~~~DTmi~A~~l~~-~~sL~~la~-~l~l~~~k~~~~k~l~~~~~k~~~~~~~~~~~~~~~~~~~~~~~~ 159 (675) T Consensus 94 ~~~gi~~--~n~fDT~iaa~~l~~~~~sL~~Lv~~~lg~~l~K~~q~------------------SdW~~RPL-s~~Ql~ 152 (192) T cd06147 94 RDFGLYV--VNLFDTGQAARVLNLPRHSLAYLLQKYCNVDADKKYQL------------------ADWRIRPL-PEEMIK 152 (192) T ss_pred HHHCCCC--CCCHHHHHHHHHHCCCCHHHHHHHHHHHCCCCCCCCEE------------------CCCCCCCC-CHHHHH T ss_conf 9858987--66042899999848881119999999939588732311------------------43799989-999999 Q ss_pred HHHHHHHHHHHHHHHCCCCH-HCCCCHHH Q ss_conf 98998999999996301040-00151336 Q gi|254781193|r 160 YCKGDVTVTREIFKRLEPLS-SKEQELWY 187 (675) Q Consensus 160 Ya~~Dv~~t~~L~~~l~~~~-~~E~~~~~ 187 (675) T Consensus 153 YAA~Dv~~Ll~ly~~L~~~L~e~~~~~~~ 181 (192) T cd06147 153 YAREDTHYLLYIYDRLRNELLERANALAP 181 (192) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHCCCHH T ss_conf 99999999999999999999984286416

HHsearch alignment for GI: 254781193 and conserved domain: cd06147