Protein: Alpha-ketoglutarate-dependent dioxygenase alkB homolog 3 (EC 1.14.11.33) (EC 1.14.11.54) (Alkylated DNA repair protein alkB homolog 3) (hABH3) (DEPC-1) (Prostate cancer antigen 1) (Q96Q83)
Organism: Homo sapiens (Human)
Function: Dioxygenase that mediates demethylation of DNA and RNA containing 1-methyladenosine (m1A). Repairs alkylated DNA containing 1-methyladenosine (m1A) and 3-methylcytosine (m3C) by oxidative demethylation. Has a strong preference for single-stranded DNA. Able to process alkylated m3C within double-stranded regions via its interaction with ASCC3, which promotes DNA unwinding to generate single-stranded substrate needed for ALKBH3. Can repair exocyclic 3,N4-ethenocytosine adducs in single-stranded DNA. Also acts on RNA. Demethylates N(1)-methyladenosine (m1A) RNA, an epigenetic internal modification of messenger RNAs (mRNAs) highly enriched within 5'-untranslated regions (UTRs) and in the vicinity of start codons. Requires molecular oxygen, alpha-ketoglutarate and iron.
Subcellular location: Nucleus {ECO:0000269|PubMed:12486230, ECO:0000269|PubMed:12594517, ECO:0000269|PubMed:17979886, ECO:0000269|PubMed:29144457}. Cytoplasm {ECO:0000269|PubMed:12486230, ECO:0000269|PubMed:12594517, ECO:0000269|PubMed:17979886}. Note=Colocalizes with ASCC2 and ASCC3 in nuclear foci when cells have been exposed to alkylating agents that cause DNA damage (PubMed:29144457). Predominantly localizes to the nucleus. {ECO:0000269|PubMed:12486230, ECO:0000269|PubMed:12594517, ECO:0000269|PubMed:17979886, ECO:0000269|PubMed:29144457}.
InterPro domains:
- IPR037151: Alpha-ketoglutarate-dependent dioxygenase AlkB-like superfamily (homologous_superfamily) [68-286]
- IPR005123: Oxoglutarate/iron-dependent dioxygenase domain (domain) [172-278]
- IPR027450: Alpha-ketoglutarate-dependent dioxygenase AlkB-like (domain) [90-275]
- IPR032854: Alkylated DNA repair protein alkB homologue 3 (family) [21-283]
Sequence:
MEEKRRRARVQGAWAAPVKSQAIAQPATTAKSHLHQKPGQTWKNKEHHLSDREFVFKEPQQVVRRAPEPRVIDREGVYEISLSPTGVSRVCLYPGFVDVKEADWILEQLCQDVPWKQRTGIREDITYQQPRLTAWYGELPYTYSRITMEPNPHWHPVLRTLKNRIEENTGHTFNSLLCNLYRNEKDSVDWHSDDEPSLGRCPIIASLSFGATRTFEMRKKPPPEENGDYTYVERVKIPLDHGTLLIMEGATQADWQHRVPKEYHSREPRVNLTFRTVYPDPRGAPW
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0003824 (catalytic activity), GO:0032451 (demethylase activity), GO:1901363 (heterocyclic compound binding), GO:0016787 (hydrolase activity), GO:0016491 (oxidoreductase activity), GO:0140640 (catalytic activity, acting on a nucleic acid), GO:0043167 (ion binding), GO:0097159 (organic cyclic compound binding), GO:0005515 (protein binding), GO:0003676 (nucleic acid binding), GO:0051213 (dioxygenase activity), GO:0016705 (oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen), GO:0043169 (cation binding), GO:0140097 (catalytic activity, acting on DNA), GO:0003677 (DNA binding), GO:0016706 (2-oxoglutarate-dependent dioxygenase activity), GO:0046872 (metal ion binding), GO:0003690 (double-stranded DNA binding), GO:0043565 (sequence-specific DNA binding), GO:0046914 (transition metal ion binding), GO:1990837 (sequence-specific double-stranded DNA binding), GO:0005506 (iron ion binding), GO:0000182 (rDNA binding), GO:0008198 (ferrous iron binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0050896 (response to stimulus), GO:0051716 (cellular response to stimulus), GO:0006950 (response to stress), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0044238 (primary metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0006725 (cellular aromatic compound metabolic process), GO:1901360 (organic cyclic compound metabolic process), GO:0034641 (cellular nitrogen compound metabolic process), GO:0006139 (nucleobase-containing compound metabolic process), GO:0044260 (cellular macromolecule metabolic process), GO:0043170 (macromolecule metabolic process), GO:0046483 (heterocycle metabolic process), GO:0033554 (cellular response to stress), GO:0006259 (DNA metabolic process), GO:0043412 (macromolecule modification), GO:0090304 (nucleic acid metabolic process), GO:0006974 (cellular response to DNA damage stimulus), GO:0006304 (DNA modification), GO:0006281 (DNA repair), GO:0006307 (DNA dealkylation involved in DNA repair), GO:0035510 (DNA dealkylation)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0043233 (organelle lumen), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043228 (non-membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0043232 (intracellular non-membrane-bounded organelle), GO:0031981 (nuclear lumen), GO:0005730 (nucleolus), GO:0005634 (nucleus)