ALKBH3 associated with ASCC1:ASCC2:ASCC3 binds alkylated dsDNA containing 1-meA

Stable Identifier
Reaction [binding]
Homo sapiens
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ALKBH3 (ABH3) has a preference for binding single strand DNA or RNA containing alkylation damage. ALKBH3 associates with dsDNA containing 1-methyladenine alkylation damage (1-meA-dsDNA) in the presence of ASCC3 DNA helicase. ASCC3 is a part of ASCC1:ASCC2:ASCC3 activating signal co-integrator complex, which unwinds dsDNA, providing an appropriate substrate for ALKBH3 (Duncan et al. 2002, Sundheim et al. 2006, Chen et al. 2010, Dango et al. 2011). ALKBH3 requires iron (Fe2+) for its catalytic activity (Duncan et al. 2002, Sundheim et al. 2006).
Literature References
PubMed ID Title Journal Year
20714506 Mechanistic insight into the recognition of single-stranded and double-stranded DNA substrates by ABH2 and ABH3

Sun, X, Chen, B, Liu, H, Yang, CG

Mol Biosyst 2010
22055184 DNA unwinding by ASCC3 helicase is coupled to ALKBH3-dependent DNA alkylation repair and cancer cell proliferation

Xiong, LJ, Park, K, Mosammaparast, N, Dango, S, Shi, Y, Gygi, S, Sowa, ME, Harper, JW, Wu, F, Rubin, M

Mol. Cell 2011
16858410 Human ABH3 structure and key residues for oxidative demethylation to reverse DNA/RNA damage

Tainer, JA, Drabløs, F, Slupphaug, G, Sousa, MM, Vågbø, CB, Bjørås, M, Aas, PA, Sundheim, O, Talstad, V, Krokan, HE

EMBO J. 2006
12486230 Reversal of DNA alkylation damage by two human dioxygenases.

Lindahl, T, Duncan, T, Bates, PA, Sedgwick, B, Trewick, SC, Koivisto, P

Proc Natl Acad Sci U S A 2002
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