Abstract:
:Nucleotide excision repair and the ATR-mediated DNA damage checkpoint are two critical cellular responses to the genotoxic stress induced by ultraviolet (UV) light and are important for cancer prevention. In vivo genetic data indicate that these global responses are coupled. Aziz Sancar et al. developed an in vitro coupled repair-checkpoint system to analyze the basic steps of these DNA damage stress responses in a biochemically defined system. The minimum set of factors essential for repair-checkpoint coupling include damaged DNA, the excision repair factors (XPA, XPC, XPF-ERCC1, XPG, TFIIH, RPA), the 5'-3' exonuclease EXO1, and the damage checkpoint proteins ATR-ATRIP and TopBP1. This coupled repair-checkpoint system was used to demonstrate that the ~30 nucleotide single-stranded DNA (ssDNA) gap generated by nucleotide excision repair is enlarged by EXO1 and bound by RPA to generate the signal that activates ATR.
journal_name
Photochem Photobioljournal_title
Photochemistry and photobiologyauthors
Lindsey-Boltz LAdoi
10.1111/php.12667subject
Has Abstractpub_date
2017-01-01 00:00:00pages
238-244issue
1eissn
0031-8655issn
1751-1097journal_volume
93pub_type
杂志文章,评审abstract::The inefficient endosomal escape of drugs or macromolecules is a major obstacle to achieving successful delivery to therapeutic targets. An efficient approach to circumvent this barrier is photochemical internalization (PCI), which uses light and photosensitizers for endosomal escape of the delivered macromolecules. T...
journal_title:Photochemistry and photobiology
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doi:10.1111/php.13146
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journal_title:Photochemistry and photobiology
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journal_title:Photochemistry and photobiology
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/php.13089
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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journal_title:Photochemistry and photobiology
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:2011-03-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:1987-07-01 00:00:00
abstract::We investigated the hypothesis that the strength of the activation of the intra-S DNA damage checkpoint varies within the S phase. Synchronized diploid human fibroblasts were exposed to either 0 or 2.5 J m(-2) UVC in early, mid- and late-S phase. The endpoints measured were the following: (1) radio-resistant DNA synth...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/php.12361
更新日期:2015-01-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章,评审
doi:10.1562/2006-02-28-IR-820
更新日期:2007-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2000-07-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1991.tb01996.x
更新日期:1991-07-01 00:00:00
abstract::Aqueous solutions of KI were examined for use as chemical actinometers to measure 254 nm (germicidal) radiation. Irradiation results in electron ejection from iodide such that aqueous electrons and iodine atoms are formed. In the presence of N2O, an electron scavenger, recombination of these two reactive species is el...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1993.tb04986.x
更新日期:1993-12-01 00:00:00
abstract::We report here preliminary pilot study data of the effect of sunless tanning spray with 9% [Correction added after online publication (August 24th, 2009): The concentration of Dihydroxyacetone used in the study was 9% and not 3% as previously stated] dihydroxyacetone (DHA) on 25-hydroxyvitamin D [25(OH)D] serum levels...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:2009-09-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章,评审
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更新日期:1989-09-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:
更新日期:1999-06-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2009-07-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:2001-08-01 00:00:00
abstract::Spatio-temporal patterns in sun exposure underlie variations in skin cancer incidence and vitamin D deficiency, indicate effectiveness of sun protection programs and provide insights into future health risks. From 558 adults across four regions of Australia (Brisbane (27°S), Newcastle (33°S), Geelong and the Western D...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/php.12044
更新日期:2013-05-01 00:00:00
abstract::The Escherichia coli protein YcgF contains a photosensory flavin adenine dinucleotide (FAD)-binding BLUF domain covalently linked to an EAL domain, which is predicted to have cyclic-di-guanosine monophosphate (GMP) phosphodiesterase activity. We have cloned, overexpressed and purified this protein, which we refer to a...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:2004-11-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:2011-01-01 00:00:00
abstract::We report here the design and synthesis of porphyrin-metallocene dyads consisting of a metallocene [either ferrocene or mixed sandwich η(5)-[C5H4(COOH)]Co(η(4)-C4Ph4) connected via an ester linkage at meso phenyl position of either free-base or zinc porphyrin. All these dyad systems were characterized by various spect...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/php.12372
更新日期:2015-01-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.2011.01027.x
更新日期:2012-01-01 00:00:00
abstract::The protein environments surrounding the retinal tune electronic absorption maximum from 350 to 630 nm. Hybrid quantum mechanical/molecular mechanical (QM/MM) methods can be used in calculating excitation energies of retinal in its native protein environments and in studying the molecular basis of spectral tuning. We ...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章,评审
doi:10.1111/j.1751-1097.2008.00308.x
更新日期:2008-07-01 00:00:00
abstract::We have compared the distributions of two stable UV photoproducts in nucleosome core DNA at the single-nucleotide level using a T4 polymerase-exonuclease mapping procedure. The distribution of pyrimidine-pyrimidone (6-4) dimers was uncovered by reversing the major UV photo-product, cis-syn cyclobutane pyrimidine dimer...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1990.tb01732.x
更新日期:1990-04-01 00:00:00
abstract::Unidirectional blue light directs the rhizoid-thallus axis in the apolar zygote of the brown alga, Silvetia compressa. This effect is mediated by an increase in the intracellular concentration of guanosine 3', 5'-cyclic monophosphate. In this study we show the identification of a rhodopsin-like protein, by means of an...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1562/0031-8655(2002)075<0076:arlpit>2.0.co;2
更新日期:2002-01-01 00:00:00