>cd05777 DNA_polB_delta_exo The 3'-5' exonuclease domain of eukaryotic DNA polymerase delta. DNA polymerase delta 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 epsilon are the other two) that have been identified as essential for nuclear DNA replication in eukaryotes. DNA polymerase delta is the enzyme responsible for both elongation and maturation of Okazaki fragments on the lagging strand. It is also implicated in mismatch repair (MMR) and base excision repair (BER). The catalytic subunit displays both polymerase and 3'-5' exonuclease activities. The 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 contain four conserved acidic residues necessary for metal binding and catalysis. The exonuclease domain of family B polyme

Probab=96.70 E-value=0.0097 Score=35.17 Aligned_cols=104 Identities=13% Similarity=0.014 Sum_probs=59.6 Q ss_pred HHHHH--HCCCCCEEECCC-CHHHHHHHHHHH---CC----------------------------------CCC--HHHH Q ss_conf 76777--323640230100-001688865420---00----------------------------------000--0457 Q gi|254780636|r 66 LVGML--VDEKREKIFHYG-RFDIAVLFYTFG---VR----------------------------------VRP--VFCT 103 (207) Q Consensus 66 L~~ll--~d~~i~KV~Hn~-~~D~~~L~~~~g---i~----------------------------------~~~--i~DT 103 (207) T Consensus 78 F~~~i~~~dPDii-tGyN~~~FD~pYL~~Ra~~l~~~~~~~lgr~~~~~~~~~~~~~~s~~~g~~~~~~~~i~Gr~~lD~ 156 (230) T cd05777 78 WRDFVQEVDPDII-TGYNICNFDLPYLLERAKALKLNTFPFLGRIKNIKSTIKDTTFSSKQMGTRETKEINIEGRIQFDL 156 (230) T ss_pred HHHHHHHCCCCEE-EECCCCCCCHHHHHHHHHHHCCCCHHHHCCCCCCCCEEECCCCCCCCCCCCEEEEEEECCEEHHHH T ss_conf 9999998099999-963666788789999999968861454176678763574165222312640026998758759999 Q ss_pred HHHHHHHHHHCCCHHHHHHHHHHHCCCCCC-C-CEECC-CCCCC-CCHHHHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 898865211000000887776542002467-5-20036-56544-323689999864599999999999999 Q gi|254780636|r 104 KIASRLTRTYTNQHGLKDNLKELLGINISK-A-QQSSD-WSADD-LSDEQLQYAASDVVHLHALRLQFTEKL 171 (207) Q Consensus 104 ~ias~l~~~~~~~~~L~~L~~~~lg~~ldK-~-~q~Sd-W~~rp-Ls~~Qi~YAA~Dv~~l~~L~~~l~~~L 171 (207) T Consensus 157 ~~~~r~-~~~l~sY~L~~Va~~~Lg~~K~d~~~~~i~~~~~~~~~~~~~~~~Y~i~D~~L~~~L~~Kl~~~~ 227 (230) T cd05777 157 LQVIQR-DYKLRSYSLNSVSAHFLGEQKEDVHYSIITDLQNGNPETRRRLAVYCLKDAYLPLRLLDKLMCLV 227 (230) T ss_pred HHHHHH-HCCHHHCCHHHHHHHHHCCCCCCCCHHHHHHHHHCCHHHHHHHHEECHHHHHHHHHHHHHHHHHH T ss_conf 999997-50163364999999983899887999999999947964645600642687799999999987774

HHsearch alignment for GI: 254780636 and conserved domain: cd05777