>cd05779 DNA_polB_epsilon_exo The 3'-5' exonuclease domain of eukaryotic DNA polymerase epsilon. DNA polymerase epsilon is a family-B DNA polymerase with a catalytic subunit that contains a DEDDy-type DnaQ-like 3'-5' exonuclease domain. It is one of the three DNA-dependent type B DNA polymerases (alpha and delta are the other two) that have been identified as essential for nuclear DNA replication in eukaryotes. DNA polymerase epsilon plays a role in elongating the leading strand during DNA replication. It is also involved in DNA repair. The catalytic subunit contains both polymerase and 3'-5' exonuclease activities. The N-terminal exonuclease domain contains three sequence motifs termed ExoI, ExoII and ExoIII, with a specific YX(3)D pattern at ExoIII. These motifs are clustered around the active site and are involved in metal binding and catalysis. DNA polymerase epsilon also carries a unique large C-terminal domain with an unknown function. Phylogenetic analyses indicate that it is ort

Probab=98.56 E-value=5.5e-07 Score=63.60 Aligned_cols=136 Identities=23% Similarity=0.296 Sum_probs=73.4 Q ss_pred CEEEEECCCCCC-----CCCCCEEEEEEEEEEECCEE-CCCEEEEEECCCCCCCCHHHE----EECCCCCCCCCCCCCCC Q ss_conf 589998467888-----88888899999999999988-031379898588822886572----42021012322485210 Q gi|254780818|r 8 RKIVFDIETTGL-----DSKNDRIIEIGAVELLDYSK-TNRTFQVFLCPNGRKNSPEAL----KLHGITDEFLKDKPSFS 77 (245) Q Consensus 8 r~iv~D~ETTGl-----~~~~d~Iieigav~i~~~~~-~~~~f~~~i~P~~~~i~~~~~----~ihGIt~~~l~~~p~f~ 77 (245) T Consensus 3 rilsfDIE~~~~~~~fP~~~~D~Ii~Is~~~~~~g~~i~~~~---~~~---~~i~~~~~~~~~~~~g--~~~v~~~~~E~ 74 (204) T cd05779 3 RVLAFDIETTKLPLKFPDAETDQIMMISYMIDGQGYLIVNRE---IVS---EDIEDFEYTPKPEYEG--PFKVFNEPDEK 74 (204) T ss_pred EEEEEEEEEECCCCCCCCCCCCEEEEEEEEEECCCEEEEECC---CCC---CCCCCCCCCCCCCCCC--CEEEEECCCHH T ss_conf 799999995079999989888908999999916877987434---013---5330001467856657--64898369999 Q ss_pred HHHHHHHHHHHCCC-CEEEEECC-CCCCCEEEECHHCCCCCCCCC------------CH---HCCCHHCCCC--CCCCCC Q ss_conf 02344777530023-20231023-224311210000011222210------------00---0110000000--177642 Q gi|254780818|r 78 SIFSEFWDFFNEQN-AEWIAHNA-KFDVGFINAELQRINKDPLDP------------SR---IIDTLSIARR--KHPSSR 138 (245) Q Consensus 78 ev~~~f~~fi~~~~-~~lVaHNa-~FD~~fL~~el~r~~~~~~~~------------~~---~iDTl~lar~--~~p~~~ 138 (245) T Consensus 75 ~ll~~f~~~i~~~~pdii~gyN~~~FD~pyl~~Ra~~~~~~~~~~~~~~~~~~~~~~~~~~vhiDly~~v~rd~~l~~~s 154 (204) T cd05779 75 ALLQRFFEHIREVKPHIIVTYNGDFFDWPFVEARAAIHGLSMEEEIGFRKDSEGEYKSRYIIHMDCFRWVKRDSYLPQGS 154 (204) T ss_pred HHHHHHHHHHHHCCCCEEEECCCCCCCHHHHHHHHHHHCCCHHHHCCCCCCCCCCEECCCCEEEECHHHHHHHCCCCCCC T ss_conf 99999999998649999985587677679999999995998255318000677727626725630077651012175568 Q ss_pred CCHHHHHHH-HCCC Q ss_conf 223789997-1875 Q gi|254780818|r 139 NDLNSLCKR-YGIT 151 (245) Q Consensus 139 ~~L~~l~~~-~~i~ 151 (245) T Consensus 155 y~Ln~Vs~~~Lg~~ 168 (204) T cd05779 155 QGLKAVTKAKLGYD 168 (204) T ss_pred CCHHHHHHHHHCCC T ss_conf 77899999996899

HHsearch alignment for GI: 254780818 and conserved domain: cd05779