4mg2

Structural highlights

Function

ALKB2_HUMAN Dioxygenase that repairs alkylated DNA and RNA containing 1-methyladenine and 3-methylcytosine by oxidative demethylation. Can also repair alkylated DNA containing 1-ethenoadenine (in vitro). Has strong preference for double-stranded DNA. Has low efficiency with single-stranded substrates. Requires molecular oxygen, alpha-ketoglutarate and iron.^{[1] [2] [3] [4] [5]}

See Also

• Dioxygenase 3D structures

References

1. ↑ Duncan T, Trewick SC, Koivisto P, Bates PA, Lindahl T, Sedgwick B. Reversal of DNA alkylation damage by two human dioxygenases. Proc Natl Acad Sci U S A. 2002 Dec 24;99(26):16660-5. Epub 2002 Dec 16. PMID:12486230 doi:10.1073/pnas.262589799
2. ↑ Aas PA, Otterlei M, Falnes PO, Vagbo CB, Skorpen F, Akbari M, Sundheim O, Bjoras M, Slupphaug G, Seeberg E, Krokan HE. Human and bacterial oxidative demethylases repair alkylation damage in both RNA and DNA. Nature. 2003 Feb 20;421(6925):859-63. PMID:12594517 doi:10.1038/nature01363
3. ↑ Lee DH, Jin SG, Cai S, Chen Y, Pfeifer GP, O'Connor TR. Repair of methylation damage in DNA and RNA by mammalian AlkB homologues. J Biol Chem. 2005 Nov 25;280(47):39448-59. Epub 2005 Sep 20. PMID:16174769 doi:M509881200
4. ↑ Ringvoll J, Moen MN, Nordstrand LM, Meira LB, Pang B, Bekkelund A, Dedon PC, Bjelland S, Samson LD, Falnes PO, Klungland A. AlkB homologue 2-mediated repair of ethenoadenine lesions in mammalian DNA. Cancer Res. 2008 Jun 1;68(11):4142-9. doi: 10.1158/0008-5472.CAN-08-0796. PMID:18519673 doi:http://dx.doi.org/10.1158/0008-5472.CAN-08-0796
5. ↑ Yang CG, Yi C, Duguid EM, Sullivan CT, Jian X, Rice PA, He C. Crystal structures of DNA/RNA repair enzymes AlkB and ABH2 bound to dsDNA. Nature. 2008 Apr 24;452(7190):961-5. PMID:18432238 doi:http://dx.doi.org/10.1038/nature06889