Reactome | EXO1 interacting with MSH2:MSH3 excises DNA strand containing an insertion/deletion loop (IDL)

EXO1 interacting with MSH2:MSH3 excises DNA strand containing an insertion/deletion loop (IDL)

Stable Identifier

R-HSA-5358619

Type

Reaction [omitted]

Species

Homo sapiens

Compartment

nucleoplasm

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EXO1 interacting with MSH2:MSH3 excises DNA strand containing an insertion/deletion loop (IDL)

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EXO1 exonucleolytically degrades the strand being repaired in a 5' to 3' direction (Zhang et al. 2005, Orans et al. 2011, and inferred from EXO1 activity with MSH2:MSH6) to create a single -stranded gap extending 90-170 nucleotides beyond the insertion/deletion loop (IDL) (Fang and Modrich 1993). MLH1:PMS2 limits the length of excisions by EXO1 (Zhang et al. 2005). EXO1 also forms a complex with PCNA during S phase (Liberti et al. 2011). RPA binds the resulting single-stranded DNA (Lin et al. 1998, Ramilo et al. 2002, Zhang et al. 2005, reviewed in Iftode et al. 1999).

Literature References

PubMed ID	Title	Journal	Year
8505312	Human strand-specific mismatch repair occurs by a bidirectional mechanism similar to that of the bacterial reaction Fang, WH, Modrich, P	J. Biol. Chem.	1993
20970388	Bi-directional routing of DNA mismatch repair protein human exonuclease 1 to replication foci and DNA double strand breaks Liberti, SE, Andersen, SD, Wang, J, May, A, Miron, S, Perderiset, M, Keijzers, G, Nielsen, FC, Charbonnier, JB, Bohr, VA, Rasmussen, LJ	DNA Repair (Amst.)	2011
10473346	Replication protein A (RPA): the eukaryotic SSB. Iftode, C, Daniely, Y, Borowiec, JA	Crit Rev Biochem Mol Biol	1999
16143102	Reconstitution of 5'-directed human mismatch repair in a purified system Zhang, Y, Yuan, F, Presnell, SR, Tian, K, Gao, Y, Tomkinson, AE, Gu, L, Li, GM	Cell	2005
9430682	The evolutionarily conserved zinc finger motif in the largest subunit of human replication protein A is required for DNA replication and mismatch repair but not for nucleotide excision repair Lin, YL, Shivji, MK, Chen, C, Kolodner, R, Wood, RD, Dutta, A	J. Biol. Chem.	1998
11884592	Partial reconstitution of human DNA mismatch repair in vitro: characterization of the role of human replication protein A Ramilo, C, Gu, L, Guo, S, Zhang, X, Patrick, SM, Turchi, JJ, Li, GM	Mol. Cell. Biol.	2002
21496642	Structures of human exonuclease 1 DNA complexes suggest a unified mechanism for nuclease family Orans, J, McSweeney, EA, Iyer, RR, Hast, MA, Hellinga, HW, Modrich, P, Beese, LS	Cell	2011