A Light-Dependent Pathway for the Elimination of UV-Induced Pyrimidine (6-4) Pyrimidinone Photoproducts in Arabidopsis.
نویسندگان
چکیده
منابع مشابه
Monitoring Repair of UV-Induced 6-4-Photoproducts with a Purified DDB2 Protein Complex
Because cells are constantly subjected to DNA damaging insults, DNA repair pathways are critical for genome integrity [1]. DNA damage recognition protein complexes (DRCs) recognize DNA damage and initiate DNA repair. The DNA-Damage Binding protein 2 (DDB2) complex is a DRC that initiates nucleotide excision repair (NER) of DNA damage caused by ultraviolet light (UV) [2]-[4]. Using a purified DD...
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15 صفحه اولEscherichia coli DNA photolyase reverses cyclobutane pyrimidine dimers but not pyrimidine-pyrimidone (6-4) photoproducts.
The effect of purified Escherichia coli DNA photolyase on the UV light-induced pyrimidine-pyrimidone (6-4) photoproduct and cyclobutane pyrimidine dimer was investigated in vitro using enzyme purified from cells carrying the cloned phr gene (map position, 15.7 min). Photoproducts were examined both as site-specific lesions in end-labeled DNA and as chromatographically identified products in uni...
متن کاملDNA repair of pyrimidine dimers and 6-4 photoproducts in the ribosomal DNA.
The nucleolus is a unique structural component of interphase nuclei where the ribosomal genes, trans-cribed by RNA polymerase I (RNA pol I), are organized. In the present study, the repair of UV-induced photolesions was investigated in the ribosomal DNA (rDNA) in relation to RNA pol I transcription. We used hamster cells because their repair phenotype permits the separate analysis of the major ...
متن کاملNonrandom induction of pyrimidine-pyrimidone (6-4) photoproducts in ultraviolet-irradiated human chromatin.
Radioimmunoassays that detect pyrimidine-pyrimidone (6-4) photoproducts and cyclobutane dimers were used to determine the relative induction of these photoproducts in nucleosomal (core) and internucleosomal (linker) DNA in human cell chromatin irradiated with UV light. Cyclobutane dimers were formed in equal amounts/nucleotide in core and linker DNA, whereas (6-4) photoproducts occurred with 6-...
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ژورنال
عنوان ژورنال: The Plant Cell
سال: 1994
ISSN: 1040-4651,1532-298X
DOI: 10.1105/tpc.6.9.1311