Reactome | Cleavage of cytosine glycol by NTHL1 glycosylase

Cleavage of cytosine glycol by NTHL1 glycosylase

Stable Identifier

R-HSA-110226

Type

Reaction [transition]

Species

Homo sapiens

Compartment

nucleoplasm

ReviewStatus

5/5

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Cleavage of cytosine glycol by NTHL1 glycosylase

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NTHL1 (hNTH1; endonuclease III-like protein 1) acts as a DNA glycosylase to cleave cytosine glycol (5,6-dihydroxycytosine), a product of cytosine oxidation, from the DNA sugar-phosphate backbone, creating an apurinic/apyrimidinic (AP) site (Dizdaroglu et al. 1999). After the AP site is created, NTHL1 can act as a beta lyase to cleave the DNA strand 5' to the AP site (Ikeda et al. 1998).

Literature References

PubMed ID	Title	Journal	Year
9705289	Purification and characterization of human NTH1, a homolog of Escherichia coli endonuclease III. Direct identification of Lys-212 as the active nucleophilic residue Ikeda, S, Biswas, T, Roy, R, Izumi, T, Boldogh, I, Kurosky, A, Sarker, AH, Seki, S, Mitra, S	J. Biol. Chem.	1998
9890904	Excision of products of oxidative DNA base damage by human NTH1 protein Dizdaroglu, M, Karahalil, B, Sentürker, S, Buckley, TJ, Roldán-Arjona, T	Biochemistry	1999