RPSBLAST alignment for GI: 254780818 and conserved domain: cd06131

>gnl|CDD|99835 cd06131, DNA_pol_III_epsilon_Ecoli_like, DEDDh 3'-5' exonuclease domain of the epsilon subunit of Escherichia coli DNA polymerase III and similar proteins. This subfamily is composed of the epsilon subunit of Escherichia coli DNA polymerase III (Pol III) and similar proteins. Pol III is the main DNA replicating enzyme in bacteria, functioning as the chromosomal replicase. It is a holoenzyme complex of ten different subunits, three of which (alpha, epsilon, and theta) compose the catalytic core. The Pol III 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 Pol III also functions as a stabilizer of the holoenzyme complex. Length = 167
 Score =  233 bits (596), Expect = 4e-62
 Identities = 90/170 (52%), Positives = 116/170 (68%), Gaps = 6/170 (3%)

Query: 9   KIVFDIETTGLDSK-NDRIIEIGAVELLDYSKTNRTFQVFLCPNGRKNSPEALKLHGITD 67
           +IV D ETTGLD +   RIIEIG VEL++   T  TF V++ P  R    EA K+HGITD
Sbjct: 1   QIVLDTETTGLDPREGHRIIEIGCVELINRRLTGNTFHVYINPE-RDIPEEAFKVHGITD 59

Query: 68  EFLKDKPSFSSIFSEFWDFFNEQNAEWIAHNAKFDVGFINAELQRI--NKDPLDPSRIID 125
           EFL DKP F+ I  EF DF     AE + HNA FDVGF+NAEL  +   K  +D  R+ID
Sbjct: 60  EFLADKPKFAEIADEFLDFIR--GAELVIHNASFDVGFLNAELSLLGLGKKIIDFCRVID 117

Query: 126 TLSIARRKHPSSRNDLNSLCKRYGITISHRSKHGALLDSHLLSDVYIKMM 175
           TL++AR+K P   N L++LCKR+GI  SHR+ HGALLD+ LL++VY+++ 
Sbjct: 118 TLALARKKFPGKPNSLDALCKRFGIDNSHRTLHGALLDAELLAEVYLELT 167