>cd06130 DNA_pol_III_epsilon_like This subfamily is composed of uncharacterized bacterial proteins with similarity to the epsilon subunit of DNA polymerase III (polIII), a multisubunit polymerase which is the main DNA replicating enzyme in bacteria, functioning as the chromosomal replicase. The pol III holoenzyme is a complex of ten different subunits, three of which (alpha, epsilon, and theta) compose the catalytic core. The polIII epsilon subunit, encoded by the dnaQ gene, is a DEDDh-type 3'-5' exonuclease which is responsible for the proofreading activity of the polymerase, increasing the fidelity of DNA synthesis. It contains three conserved sequence motifs termed ExoI, ExoII and ExoIII, with a specific Hx(4)D conserved pattern at ExoIII. These motifs are clustered around the active site and contain four conserved acidic residues that serve as ligands for the two metal ions required for catalysis. The epsilon subunit of polIII also functions as a stabilizer of the holoenzyme complex

Probab=98.40 E-value=1.5e-06 Score=57.30 Aligned_cols=119 Identities=23% Similarity=0.288 Sum_probs=70.1 Q ss_pred CEEEECCCCCCCCCCCEEEEEEEEE---CCCCE-----EEECCCCC-CC--------------C-------CHHHHHHHH Q ss_conf 2799717778985445079999841---89428-----99746577-85--------------7-------067767773 Q gi|254780636|r 22 AIAVDTETLGLMPRRDRLCIVQLSP---GDGTV-----DIIRIAAG-QK--------------N-------APNLVGMLV 71 (207) Q Consensus 22 ~iaiDtEt~~l~~~~~~l~LiQl~~---~~~~~-----~l~~~~~~-~~--------------~-------~~~L~~ll~ 71 (207) T Consensus 1 fvv~D~ETT~~~--~d~I--ieIgav~i~~g~i~~~f~~lv~P~~~i~~~~~~ihGIt~~~v~~~p~~~~v~~~l~~~l~ 76 (156) T cd06130 1 FVAIDFETANAD--RASA--CSIGLVKVRDGQIVDTFYTLIRPPTRFDPFNIAIHGITPEDVADAPTFPEVWPEIKPFLG 76 (156) T ss_pred CEEEEEECCCCC--CCEE--EEEEEEEEECCEEEEEEEEEECCCCCCCHHHHHHHCCCHHHHHCCCCHHHHHHHHHHHCC T ss_conf 989997789899--9969--999999999999989999987789879988932208887998409999999999998558 Q ss_pred CCCCCEEECCCCHHHHHHHHHH---HCCC--CCHHHHHHHHHHHHHHCCCHHHHHHHHHHHCCCCCCCCEECCCCCCCCC Q ss_conf 2364023010000168886542---0000--0004578988652110000008877765420024675200365654432 Q gi|254780636|r 72 DEKREKIFHYGRFDIAVLFYTF---GVRV--RPVFCTKIASRLTRTYTNQHGLKDNLKELLGINISKAQQSSDWSADDLS 146 (207) Q Consensus 72 d~~i~KV~Hn~~~D~~~L~~~~---gi~~--~~i~DT~ias~l~~~~~~~~~L~~L~~~~lg~~ldK~~q~SdW~~rpLs 146 (207) T Consensus 77 ~~--~lVaHn~~FD~~fL~~~~~~~~~~~~~~~~iDtl~l~r~~~~~~~~~~L~~l~~~-~gi~~~-~------------ 140 (156) T cd06130 77 GS--LVVAHNASFDRSVLRAALEAYGLPPPPYQYLCTVRLARRVWPLLPNHKLNTVAEH-LGIELN-H------------ 140 (156) T ss_pred CC--EEEEECHHHHHHHHHHHHHHCCCCCCCCCEECHHHHHHHHCCCCCCCCHHHHHHH-CCCCCC-C------------ T ss_conf 98--8999577889999999999819999898588189999997388888999999998-599987-8------------ Q ss_pred HHHHHHHHHHHHHHHHHH Q ss_conf 368999986459999999 Q gi|254780636|r 147 DEQLQYAASDVVHLHALR 164 (207) Q Consensus 147 ~~Qi~YAA~Dv~~l~~L~ 164 (207) T Consensus 141 ----H~Al~DA~ata~l~ 154 (156) T cd06130 141 ----HDALEDARACAEIL 154 (156) T ss_pred ----CCCHHHHHHHHHHH T ss_conf ----79689999999998

HHsearch alignment for GI: 254780636 and conserved domain: cd06130