>cd05778 DNA_polB_zeta_exo The 3'-5' exonuclease domain of eukaryotic DNA polymerase zeta. DNA polymerase zeta is a family-B DNA polymerase which is distantly related to DNA polymerase delta. It plays a major role in translesion replication and the production of either spontaneous or induced mutations. In addition, DNA polymerase zeta also appears to be involved in somatic hypermutability in B lymphocytes, an important element for the production of high affinity antibodies in response to an antigen. The catalytic subunit contains both polymerase and 3'-5' exonuclease domains, but only exhibits polymerase activity. The DnaQ-like 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.

Probab=97.34 E-value=0.0084 Score=36.54 Aligned_cols=152 Identities=16% Similarity=0.095 Sum_probs=77.7 Q ss_pred CCEEEEEECCCCCCCCCCCCCHHHCCCCEEEEEEEEECCEE---------E--EEEEC---------------------- Q ss_conf 96899981417898700044001127981999999984803---------9--99978---------------------- Q gi|254781193|r 1 MATLFIDFETRSPIDLTKCGICKYAEDVCVILFAFGFDDHP---------V--ELWDC---------------------- 47 (675) Q Consensus 1 mk~i~lD~ET~~~~dl~~~Gl~~y~~~~~i~~i~~a~~~~~---------v--~~~d~---------------------- 47 (675) T Consensus 4 LtiLSfDIe~~sr~~-----~fPdP~~D~I~~I~~~~~~~~~~~~~~~~~~g~i~~~~~~~~~~~~~~~~~~~~~~v~~~ 78 (231) T cd05778 4 LTILSLEVHVNTRGD-----LLPDPEFDPISAIFYCIDDDVSPFILDANKVGVIIVDELKSNASNGRIRSGLSGIPVEVV 78 (231) T ss_pred EEEEEEEEEECCCCC-----CCCCCCCCCEEEEEEEECCCCCCCCCCCCCEEEEEECCCCCCHHHCCCCCCCCCCEEEEE T ss_conf 289999999888899-----996989785789999962687654456652007995586541121022257899649997 Q ss_pred CCCHHHHHHHHHHH--CCCCCEEEEEEH-HHHHHHHHH---HCCCCC-------------------------------C- Q ss_conf 88104379999986--388981999730-774999998---608998-------------------------------8- Q gi|254781193|r 48 VHDPVMPQVLKEAL--ENTDVTIVAHNS-YFERTVLKA---CFNLDI-------------------------------P- 89 (675) Q Consensus 48 ~~~~~~~~~l~~~L--~~~~~~kV~HNa-~FD~~~L~~---~~Gi~i-------------------------------~- 89 (675) T Consensus 79 ~~E~eLl~~f~~~v~~~DPDii-~Gyni~~fd~~Yl~~Ra~~l~~~~~~~~lsR~~~~~~~~~~~~~~~~g~~~~~~i~i 157 (231) T cd05778 79 ESELELFEELIDLVRRFDPDIL-SGYEIQRSSWGYLIERAAALGIDDLLDEISRVPSDSNGKFGDRDDEWGYTHTSGIKI 157 (231) T ss_pred CCHHHHHHHHHHHHHHHCCCEE-EECCCCCCCCHHHHHHHHHHCCCHHHHHCCCCCCCCCCEECCCCCCCCCCCCCEEEE T ss_conf 9999999999999997099989-622556686189999999858620466607787665421023432355644415763 Q ss_pred CCC-EEEHHHHHH-HHC-CCCCHHHHHHHCCCCCCHHH-HHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHH Q ss_conf 420-331688999-867-89996898998299811004-37999986202112343323467858532899999989989 Q gi|254781193|r 90 IHR-WICTLVLAR-SNG-LPSALKAVGEALKLSSQKME-EGKELIARFCKGETHECLYDRNKPNHREAWRLFGEYCKGDV 165 (675) Q Consensus 90 ~~~-~~DTmi~A~-~l~-~~~sL~~la~~l~l~~~k~~-~~k~l~~~~~k~~~~~~~~~~~~~~~~~~~~~~~~Ya~~Dv 165 (675) T Consensus 158 ~GRi~lDl~~~~r~e~kL~sYsLe~V~~~~-L~e~k~~~~~~~l~~~~~~-------------g~~~~r~~v~~Yclkd~ 223 (231) T cd05778 158 VGRHILNVWRLMRSELALTNYTLENVVYHV-LHQRIPLYSNKTLTEWYKS-------------GSASERWRVLEYYLKRV 223 (231) T ss_pred CCEEEEEHHHHHHHHCCCCCCCHHHHHHHH-HCCCCCCCCHHHHHHHHHC-------------CCHHHHHHHHEEEHHHH T ss_conf 418998519999753584438799999999-6798888999999999974-------------99878516440007530 Q ss_pred HHHHHHH Q ss_conf 9999999 Q gi|254781193|r 166 TVTREIF 172 (675) Q Consensus 166 ~~t~~L~ 172 (675) T Consensus 224 ~l~l~Ll 230 (231) T cd05778 224 RLNLEIL 230 (231) T ss_pred HHHHHHH T ss_conf 5158652

HHsearch alignment for GI: 254781193 and conserved domain: cd05778