>cd05776 DNA_polB_alpha_exo The 3'-5' exonuclease domain of eukaryotic DNA polymerase alpha. DNA polymerase alpha is a family-B DNA polymerase with a catalytic subunit that contains a DnaQ-like 3'-5' exonuclease domain. It is one of the three DNA-dependent type B DNA polymerases (delta and epsilon are the other two) that have been identified as essential for nuclear DNA replication in eukaryotes. DNA polymerase alpha is almost exclusively required for the initiation of DNA replication and the priming of Okazaki fragments during elongation. It associates with DNA primase and is the only enzyme able to start DNA synthesis de novo. The catalytic subunit contains both polymerase and 3'-5' exonuclease domains, but only exhibits polymerase activity. The 3'-5' exonuclease domain contains three sequence motifs termed ExoI, ExoII and ExoIII, without the four conserved acidic residues that are crucial for metal binding and catalysis. This explains why in most organisms, that no specific repair r

Probab=96.82 E-value=0.034 Score=32.62 Aligned_cols=107 Identities=18% Similarity=0.222 Sum_probs=62.8 Q ss_pred HHHHHHHHH--CCCCCEEEEEEH-HHHHHHHHH---HCCCC--------------------------CCCCC-EEEHHHH Q ss_conf 379999986--388981999730-774999998---60899--------------------------88420-3316889 Q gi|254781193|r 53 MPQVLKEAL--ENTDVTIVAHNS-YFERTVLKA---CFNLD--------------------------IPIHR-WICTLVL 99 (675) Q Consensus 53 ~~~~l~~~L--~~~~~~kV~HNa-~FD~~~L~~---~~Gi~--------------------------i~~~~-~~DTmi~ 99 (675) T Consensus 85 LL~~f~~~i~~~DPDii-~Ghni~~fdl~~L~~R~~~lki~~wsriGRlkr~~~p~~~~~~~~~~~~~~~GRl~~D~~~~ 163 (234) T cd05776 85 LLNFFLAKLQKIDPDVL-VGHDLEGFDLDVLLSRIQELKVPHWSRIGRLKRSVWPKKKGGGKFGERELTAGRLLCDTYLS 163 (234) T ss_pred HHHHHHHHHHHCCCCEE-EEECCCCCCHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCEEECCEEEEECHHH T ss_conf 99999999985099899-85063777599999999980998533135500143764456565344203523588760999 Q ss_pred HHHHC--CCCCHHHHHHHCCCCCCHH-HHHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHCC Q ss_conf 99867--8999689899829981100-43799998620211234332346785853289999998998999999996301 Q gi|254781193|r 100 ARSNG--LPSALKAVGEALKLSSQKM-EEGKELIARFCKGETHECLYDRNKPNHREAWRLFGEYCKGDVTVTREIFKRLE 176 (675) Q Consensus 100 A~~l~--~~~sL~~la~~l~l~~~k~-~~~k~l~~~~~k~~~~~~~~~~~~~~~~~~~~~~~~Ya~~Dv~~t~~L~~~l~ 176 (675) T Consensus 164 ~ke~~k~~sy~L~~v~~~~-L~~~k~dv~~~~i~~~~---------------~~~~~l~~l~~~~~~Da~l~~~L~~~L~ 227 (234) T cd05776 164 AKELIRCKSYDLTELSQQV-LGIERQDIDPEEILNMY---------------NDSESLLKLLEHTEKDAYLILQLMFKLN 227 (234) T ss_pred HHHHHCCCCCCHHHHHHHH-HCCCCCCCCHHHHHHHH---------------HCHHHHHHHHHHHHHHHHHHHHHHHHHC T ss_conf 9987466778889999999-68676679999999998---------------6939999999999999999999999958

HHsearch alignment for GI: 254781193 and conserved domain: cd05776