Reduced 2-Methyl-4-Oxo, 2-Methylamino-4-Oxo, 2-Methylthio-4-Oxo and 2-Amino-4-Thioxo 6,7-Dimethylpteridines, and 6,8-Dimethylpterin as Substrates for Dihydropteridine Reductase
Reduced 2-Methyl-4-Oxo, 2-Methylamino-4-Oxo, 2-Methylthio-4-Oxo and 2-Amino-4-Thioxo 6,7-Dimethylpteridines, and 6,8-Dimethylpterin as Substrates for Dihydropteridine Reductase
Dramatic Change in the Tertiary Structure of Giant DNA without Distortion of the Secondary Structure Caused by Pteridine-Polyamine Conjugates
作者:Ning Chen、Shizuaki Murata、Kenichi Yoshikawa
DOI:10.1002/chem.200500135
日期:2005.8.5
Pteridine-polyamineconjugates, such as 2-polyamine (1,3-diaminopropane and spermine) substituted 6,7-dimethyl-3H-pteridine-4-one, induce a folding transition of a giantDNA molecule more effectively than the corresponding polyamines. However, since neither a DNA high-temperature shift of denaturation (Tm) curve nor distortion of the UV/fluorescence spectra is observed in a mixture of these compounds
carries DNA‐binding small ligands has been developed for the detection of single‐nucleotide polymorphisms (SNPs). 3,5‐Diaminopyrazine derivatives, with a hydrogen‐bonding profile fully complementary to the thymine base, were utilized as recognition elements on the sensor surface, and a target single‐stranded DNA sequence was hybridized with a DNA probe containing an abasicsite to place this site opposite