3'-5' exonuclease
SMART accession number:SM00474
Description: 3\' -5' exonuclease proofreading domain present in DNA polymerase I, Werner syndrome helicase, RNase D and other enzymes
Interpro abstract (IPR002562):

This domain is responsible for the 3'-5' exonuclease proofreading activity of Escherichia 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) [(PUBMED:9697700)].

GO process:nucleobase-containing compound metabolic process (GO:0006139)
GO function:3'-5' exonuclease activity (GO:0008408), nucleic acid binding (GO:0003676)
Family alignment:
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There are 11204 35EXOc domains in 11200 proteins in SMART's nrdb database.

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