8-Oxo-dGTP
IUPAC 名称
({[({[(3S)-5-(2-amino-6,8-dioxo-6,7,8,9-tetrahydro-3H-purin-9-yl)-3-hydroxyoxolan-2-yl]methoxy}(hydroxy)phosphoryl)oxy](hydroxy)phosphoryl}oxy)phosphonic acid
描述
8-Oxo-dGTP is considered a potentially dangerous intermediate which promotes AT-to-CG transversions (PMID: 9822604). Nudix (nucleoside diphosphate linked moiety X) proteins act as homeostatic checkpoints at important stages in nucleoside phosphate metabolic pathways, guarding against elevated levels of potentially dangerous intermediates (e.g. 8-Oxo-dGTP). NUDT3 (Nudix-type motif 3) is an example of a MutT, or Nudix, protein family member.
Misincorporation of oxidized nucleoside triphosphates into DNA/RNA during replication and transcription can cause mutations that may result in carcinogenesis or neurodegeneration. The protein encoded by this gene is an enzyme that hydrolyzes oxidized purine nucleoside triphosphates, such as 8-oxo-dGTP, 8-oxo-dATP, 2-hydroxy-dATP, and 2-hydroxy rATP, to monophosphates, thereby preventing misincorporation. The encoded protein is localized mainly in the cytoplasm, with some in the mitochondria, suggesting that it is involved in the sanitization of nucleotide pools both for nuclear and mitochondrial genomes. Several alternatively spliced transcript variants, some of which encode distinct isoforms, have been identified. Additional variants have been observed, but their full-length natures have not been determined. [HMDB]. 8-Oxo-dGTP is found in many foods, some of which are pepper (c. frutescens), giant butterbur, tea, and sweet bay.
异构
NC1=NC(=O)C2=C(N1)N(C1C[C@H](O)C(COP(O)(=O)OP(O)(=O)OP(O)(O)=O)O1)C(=O)N2
InChI标识符
InChI=1S/C10H16N5O14P3/c11-9-13-7-6(8(17)14-9)12-10(18)15(7)5-1-3(16)4(27-5)2-26-31(22,23)29-32(24,25)28-30(19,20)21/h3-5,16H,1-2H2,(H,12,18)(H,22,23)(H,24,25)(H2,19,20,21)(H3,11,13,14,17)/t3-,4?,5?/m0/s1
键
BUZOGVVQWCXXDP-KLFYCJEISA-N