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- Table of Contents
Facts about Exonuclease 1.
Also exhibits endonuclease activity against 5'-overhanging flap structures similar to those generated by displacement synthesis when DNA polymerase encounters the 5'-end of a downstream Okazaki fragment. Required for somatic hypermutation (SHM) and class switch recombination (CSR) of immunoglobulin genes.
Human | |
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Gene Name: | EXO1 |
Uniprot: | Q9UQ84 |
Entrez: | 9156 |
Belongs to: |
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XPG/RAD2 endonuclease family |
EXOI; exonuclease 1; Exonuclease I; HEX1rad2 nuclease family member, homolog of S. cerevisiae exonuclease 1; hExo1; hExoIEC 3.1
Mass (kDA):
94.103 kDA
Human | |
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Location: | 1q43 |
Sequence: | 1; NC_000001.11 (241847967..241889939) |
Highly expressed in bone marrow, testis and thymus. Expressed at lower levels in colon, lymph nodes, ovary, placenta, prostate, small intestine, spleen and stomach.
Nucleus. Colocalizes with PCNA to discrete nuclear foci in S-phase.
PMID: 9788596 by Schmutte C., et al. Human exonuclease I interacts with the mismatch repair protein hMSH2.
PMID: 9823303 by Tishkoff D.X., et al. Identification of a human gene encoding a homologue of Saccharomyces cerevisiae EXO1, an exonuclease implicated in mismatch repair and recombination.