HHsearch alignment for GI: 254781193 and conserved domain: pfam01612

>pfam01612 3_5_exonuc 3'-5' exonuclease. This domain is responsible for the 3'-5' exonuclease proofreading activity of E. coli DNA polymerase I (polI) and other enzymes, it catalyses the hydrolysis of unpaired or mismatched nucleotides. This domain consists of the amino-terminal half of the Klenow fragment in E. coli polI it is also found in the Werner syndrome helicase (WRN), focus forming activity 1 protein (FFA-1) and ribonuclease D (RNase D). Werner syndrome is a human genetic disorder causing premature aging; the WRN protein has helicase activity in the 3'-5' direction. The FFA-1 protein is required for formation of a replication foci and also has helicase activity; it is a homologue of the WRN protein. RNase D is a 3'-5' exonuclease involved in tRNA processing. Also found in this family is the autoantigen PM/Scl thought to be involved in polymyositis-scleroderma overlap syndrome.
Probab=99.80  E-value=2.4e-18  Score=137.15  Aligned_cols=148  Identities=20%  Similarity=0.198  Sum_probs=105.4

Q ss_pred             CEEEEEECCCCCCCCCCCCCHHHCCCCEEEEEEEEECCEEEEEEECCCCHHHHHHHHHHHCCCCCEEEEEEHHHHHHHHH
Q ss_conf             68999814178987000440011279819999999848039999788810437999998638898199973077499999
Q gi|254781193|r    2 ATLFIDFETRSPIDLTKCGICKYAEDVCVILFAFGFDDHPVELWDCVHDPVMPQVLKEALENTDVTIVAHNSYFERTVLK   81 (675)
Q Consensus         2 k~i~lD~ET~~~~dl~~~Gl~~y~~~~~i~~i~~a~~~~~v~~~d~~~~~~~~~~l~~~L~~~~~~kV~HNa~FD~~~L~   81 (675)
T Consensus        21 ~~ia~DtEt~~~--------~~~~~~~~~~llq~~~~~-~~yli~~~~~~~~~~~L~~ll~~~~i~Kvghn~k~D~~~L~   91 (172)
T pfam01612        21 KVVAVDTETTSL--------DTYSYTLVGCLIQISTGE-GAYIIDPLALGDDLEGLKRLLEDPNITKVGHNAKFDLEVLA   91 (172)
T ss_pred             CCEEEEEECCCC--------CCCCCCCCEEEEEEECCC-CCEEEECCCCHHHHHHHHHHHCCCCCCEEEEEHHHHHHHHH
T ss_conf             908998062898--------867613433699996798-60776434756679999999759998799975899999998


Q ss_pred             HHCCCCCCCCCEEEHHHHHHHHCC--CCCHHHHHHH-CCCCCCHHHHHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHH
Q ss_conf             860899884203316889998678--9996898998-2998110043799998620211234332346785853289999
Q gi|254781193|r   82 ACFNLDIPIHRWICTLVLARSNGL--PSALKAVGEA-LKLSSQKMEEGKELIARFCKGETHECLYDRNKPNHREAWRLFG  158 (675)
Q Consensus        82 ~~~Gi~i~~~~~~DTmi~A~~l~~--~~sL~~la~~-l~l~~~k~~~~k~l~~~~~k~~~~~~~~~~~~~~~~~~~~~~~  158 (675)
T Consensus        92 ~~~~~~~--~~~~Dt~~a~~~l~~~~~~gL~~L~~~~lg~~~~K~~~~------------------s~w~~rp-L~~~qi  150 (172)
T pfam01612        92 RDFGIKL--ENLFDTMLAAYLLGYPRSHSLDDLAEKYLGVELDKSEQC------------------ADWRARP-LSEEQL  150 (172)
T ss_pred             HHCCCCC--CCCHHHHHHHHHCCCCCCCCHHHHHHHHCCCCCCHHHEE------------------CCCCCCC-CCHHHH
T ss_conf             8547666--873278999988199643569999999809878744156------------------6788789-829999


Q ss_pred             HHHHHHHHHHHHHHHHCCCCH
Q ss_conf             998998999999996301040
Q gi|254781193|r  159 EYCKGDVTVTREIFKRLEPLS  179 (675)
Q Consensus       159 ~Ya~~Dv~~t~~L~~~l~~~~  179 (675)
T Consensus       151 ~YAa~Da~~~~~l~~~l~~~l  171 (172)
T pfam01612       151 RYAAEDADYLLRLYDKLRKEL  171 (172)
T ss_pred             HHHHHHHHHHHHHHHHHHHHH
T ss_conf             999999999999999999974