>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=98.92  E-value=4.9e-08  Score=71.36  Aligned_cols=63  Identities=25%  Similarity=0.445  Sum_probs=48.0

Q ss_pred             HHHHHHCCCCCEEEEEEHHHHHHHHHHH---CCCCCCCCCEEEHHHHHHHHC---CCCCHHHHHHHHCCCC
Q ss_conf             9999864889819986307759999986---299878650454588999858---8999789999808898
Q gi|254780127|r   56 DLLQYLRDETVMCVAHNSLFERILFKKT---LGIDIPSKRWICTSVLARTNG---LPSSLKNACLALNFSE  120 (675)
Q Consensus        56 ~l~~~L~~~~~~kv~HNa~FD~~vL~~~---lGi~i~~~~~~DTmi~A~~l~---~p~sL~~la~~lgl~~  120 (675)
T Consensus        70 ~l~~~l--~~~~lVaHn~~FD~~fL~~~~~~~~~~~~~~~~iDtl~l~r~~~~~~~~~~L~~l~~~~gi~~  138 (156)
T cd06130          70 EIKPFL--GGSLVVAHNASFDRSVLRAALEAYGLPPPPYQYLCTVRLARRVWPLLPNHKLNTVAEHLGIEL  138 (156)
T ss_pred             HHHHHC--CCCEEEEECHHHHHHHHHHHHHHCCCCCCCCCEECHHHHHHHHCCCCCCCCHHHHHHHCCCCC
T ss_conf             999855--898899957788999999999981999989858818999999738888899999999859998