RPSBLAST alignment for GI: 254780636 and conserved domain: pfam01612
>gnl|CDD|144991 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. Length = 172
Score = 125 bits (315), Expect = 1e-29
Identities = 53/155 (34%), Positives = 83/155 (53%), Gaps = 4/155 (2%)
Query: 20 VDAIAVDTET--LGLMPRRDRLCIVQLSPGDGTVDIIRIAAGQKNAPNLVGMLVDEKREK 77
+AVDTET L C++Q+S G+G II A + L +L D K
Sbjct: 20 AKVVAVDTETTSLDTYSYTLVGCLIQISTGEGAY-IIDPLALGDDLEGLKRLLEDPNITK 78
Query: 78 IFHYGRFDIAVLFYTFGVRVRPVFCTKIASRLTRTYTNQHGLKDNLKELLGINISKAQQS 137
+ H +FD+ VL FG+++ +F T +A+ L Y H L D ++ LG+ + K++Q
Sbjct: 79 VGHNAKFDLEVLARDFGIKLENLFDTMLAAYL-LGYPRSHSLDDLAEKYLGVELDKSEQC 137
Query: 138 SDWSADDLSDEQLQYAASDVVHLHALRLQFTEKLQ 172
+DW A LS+EQL+YAA D +L L + ++L+
Sbjct: 138 ADWRARPLSEEQLRYAAEDADYLLRLYDKLRKELE 172