>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=95.60 E-value=0.16 Score=28.19 Aligned_cols=104 Identities=18% Similarity=0.169 Sum_probs=59.3 Q ss_pred HHHHHHC--CCCCEEEEEEH-HHHHHHHHH---HCCCCC------------C--------------CCC-EEEHHHHHHH Q ss_conf 9999864--88981998630-775999998---629987------------8--------------650-4545889998 Q gi|254780127|r 56 DLLQYLR--DETVMCVAHNS-LFERILFKK---TLGIDI------------P--------------SKR-WICTSVLART 102 (675) Q Consensus 56 ~l~~~L~--~~~~~kv~HNa-~FD~~vL~~---~lGi~i------------~--------------~~~-~~DTmi~A~~ 102 (675) T Consensus 88 ~f~~~i~~~DPDii-~Ghni~~fdl~~L~~R~~~lki~~wsriGRlkr~~~p~~~~~~~~~~~~~~~GRl~~D~~~~~ke 166 (234) T cd05776 88 FFLAKLQKIDPDVL-VGHDLEGFDLDVLLSRIQELKVPHWSRIGRLKRSVWPKKKGGGKFGERELTAGRLLCDTYLSAKE 166 (234) T ss_pred HHHHHHHHCCCCEE-EEECCCCCCHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCEEECCEEEEECHHHHHH T ss_conf 99999985099899-85063777599999999980998533135500143764456565344203523588760999998 Q ss_pred H-C-CCCCHHHHHHH-HCCCCCCHHHHHCHHHHHHHHHHHHHHCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHC Q ss_conf 5-8-89997899998-088986527663765766410023320134531125876899989887753999999998720 Q gi|254780127|r 103 N-G-LPSSLKNACLA-LNFSEHLTKMEEGKALIARFCKGSIDSPPYDCTRANHVQAWQLFGEYCKRDVEATRELFKRLI 178 (675) Q Consensus 103 l-~-~p~sL~~la~~-lgl~~~~~kd~~gk~li~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Ya~~Dv~~~~~L~~~L~ 178 (675) T Consensus 167 ~~k~~sy~L~~v~~~~L~~~k~---dv~~~~i~~~---------------~~~~~~l~~l~~~~~~Da~l~~~L~~~L~ 227 (234) T cd05776 167 LIRCKSYDLTELSQQVLGIERQ---DIDPEEILNM---------------YNDSESLLKLLEHTEKDAYLILQLMFKLN 227 (234) T ss_pred HHCCCCCCHHHHHHHHHCCCCC---CCCHHHHHHH---------------HHCHHHHHHHHHHHHHHHHHHHHHHHHHC T ss_conf 7466778889999999686766---7999999999---------------86939999999999999999999999958

HHsearch alignment for GI: 254780127 and conserved domain: cd05776