HHsearch alignment for GI: 254780127 and conserved domain: cd06138

>cd06138 ExoI_N This subfamily is composed of the N-terminal domain of E. coli exonuclease I (ExoI) and similar proteins. ExoI is a monomeric enzyme that hydrolyzes single stranded DNA in the 3' to 5' direction. It plays a role in DNA recombination and repair. It primarily functions in repairing frameshift mutations. The N-terminal domain of ExoI is a DEDDh-type DnaQ-like 3'-5 exonuclease containing 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 ExoI structure is unique among DnaQ family enzymes in that there is a large distance between the two metal ions required for catalysis and the catalytic histidine is oriented away from the active site.
Probab=97.58  E-value=0.00078  Score=43.54  Aligned_cols=65  Identities=11%  Similarity=0.017  Sum_probs=36.6

Q ss_pred             HHHHHHCCCCCEEEEEE-HHHHHHHHHHHC---CCCCC------CCCEEEHHHHHHH---HC-------------CCCCH
Q ss_conf             99998648898199863-077599999862---99878------6504545889998---58-------------89997
Q gi|254780127|r   56 DLLQYLRDETVMCVAHN-SLFERILFKKTL---GIDIP------SKRWICTSVLART---NG-------------LPSSL  109 (675)
Q Consensus        56 ~l~~~L~~~~~~kv~HN-a~FD~~vL~~~l---Gi~i~------~~~~~DTmi~A~~---l~-------------~p~sL  109 (675)
T Consensus        75 ~i~~~~~~~~~i~vg~N~~~FD~~fL~~~~~r~~~~p~~~~~~~~~~~~D~l~~~r~~~~~~p~~i~~~~~~~g~~s~kL  154 (183)
T cd06138          75 KIHRLFNTPGTCIVGYNNIRFDDEFLRFAFYRNLYDPYTWEWKNGNSRWDLLDVVRAYYALRPDGIVWPKNDDGKPSFKL  154 (183)
T ss_pred             HHHHHHCCCCCEEEEECCHHHHHHHHHHHHHHHCCCCHHHHHCCCCCCCCHHHHHHHHHHHCCCCCCCCCCCCCCCCCCH
T ss_conf             99998616997799845355689999999998278715667527871230788999999978201447655689741129


Q ss_pred             HHHHHHHCCCC
Q ss_conf             89999808898
Q gi|254780127|r  110 KNACLALNFSE  120 (675)
Q Consensus       110 ~~la~~lgl~~  120 (675)
T Consensus       155 ~~l~~~~gi~~  165 (183)
T cd06138         155 EDLAQANGIEH  165 (183)
T ss_pred             HHHHHHCCCCC
T ss_conf             99999849999