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Volumn 49, Issue 3, 2008, Pages 428-431

Photoreaction of iodouracil in DNA duplex; C-I bond is cleaved via two different pathways 'homolysis and heterolysis'

Author keywords

[No Author keywords available]

Indexed keywords

ADENINE; DOUBLE STRANDED DNA; GUANINE; IODOURACIL; OLIGONUCLEOTIDE; UNCLASSIFIED DRUG; URACIL; URACIL DERIVATIVE;

EID: 37449005926     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2007.11.141     Document Type: Article
Times cited : (19)

References (28)
  • 23
    • 37449027053 scopus 로고    scopus 로고
    • note
    • Synthesis of deoxynucleotides: Oligonucleotides were prepared by solid-phase DNA synthesis on a controlled-pore glass supports (1 μmol) using a ABI 3400 DNA synthesizer (Applied Biosystems), and were purified by high performance liquid chromatography (HPLC) with a Jasco PU-980 HPLC pump, a UV-975 HPLC UV/vis detector, and a Chemcobond. 5-ODS-H column (4.6 × 150 mm)(Chemco Scientific, Osaka, Japan). The synthesized oligonucleotides were confirmed by enzymatic digestion and electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS). ESI-TOF-MS was performed on a Bruker Bio TOF II (Bruker Daltonics,. Billerica, MA). Enzymatic digestion was performed with endonuclease P1 (0.3 units/mL, Boehringer Mannheim) and alkaline phosphatase (1000 units/mL, Boehringer Mannheim).
  • 24
    • 37449028010 scopus 로고    scopus 로고
    • note
    • Analysis of photoirradiated oligonucleotides containing 5-iodouracil: The reaction mixture (total volume 100 μL) contained 100 μM 5-iodouracil-containing deoxyoligonucleotide, 50 mM sodium cacodylate (pH 7.0), and 50 mM NaCl. Photoirradiation at 302 nm was performed in Eppendorf tube using HM-5 hypermonochromator (Jasco, Tokyo, Japan). Photolysis tubes were positioned 5 mm from the outlet of glass fiber and were irradiated for 15 min on ice. The photoreactions were carried out under aerobic conditions. After irradiation, the reaction mixtures were analyzed by HPLC with a Chemcobond. 5-ODS-H column (4.6 × 150 mm). Elution was performed with 50 mM ammonium formate (pH 6.5) and a linear gradient of 0-12% acetonitrile for 40 min at a flow rate of 1.0 mL/min at 40 °C. The yields of reaction product were estimated based on starting ODN.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.