Abstract:
:The sequence specificity of photobinding to DNA of two tetrahydrobenzopsoralen derivatives has been investigated by testing the photoreactivity toward a number of self-complementary oligonucleotides. The thermodynamic constant for noncovalent binding to each DNA sequence was evaluated. The extent of photoreactivity was greatly dependent upon base composition. The two tetracyclic compounds show similar behavior in comparison to other bifunctional derivatives. Their overall rate constants were greatly enhanced in comparison to classical psoralens. However, their high efficiency of covalent binding is counterbalanced by low affinity for noncovalent interaction with DNA.
journal_name
Photochem Photobioljournal_title
Photochemistry and photobiologyauthors
Mobilio S,Tondelli L,Capobianco M,Gia Odoi
10.1111/j.1751-1097.1995.tb03948.xsubject
Has Abstractpub_date
1995-02-01 00:00:00pages
113-7issue
2eissn
0031-8655issn
1751-1097journal_volume
61pub_type
杂志文章abstract::Detergent solubilized bacteriorhodopsin (BR) proteins which contain alterations made by site-directed mutagenesis (Asp-96----Asn, D96N; Asp-85----Asn, D85N; and Arg-82----Gln, R82Q) have been studied with resonance Raman spectroscopy. Raman spectra of the light-adapted (BRLA) and M species in D96N are identical to tho...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:1991-03-01 00:00:00
abstract::Solid-state NMR spectroscopy gives a powerful avenue for investigating G protein-coupled receptors and other integral membrane proteins in a native-like environment. This article reviews the use of solid-state (2)H NMR to study the retinal cofactor of rhodopsin in the dark state as well as the meta I and meta II photo...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章,评审
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更新日期:2012-05-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1995.tb03973.x
更新日期:1995-03-01 00:00:00
abstract::The photophysical properties of Piroxicam, a nonsteroidal anti-inflammatory drug (NSAID), were investigated at different pHext values in reversed micelles of Aerosol-OT (AOT) in iso-octane, using both steady-state and picosecond time-resolved fluorescence spectroscopy. In contrast with the very complex data obtained i...
journal_title:Photochemistry and photobiology
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journal_title:Photochemistry and photobiology
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更新日期:1999-11-01 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:1998-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:2001-02-01 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:2001-10-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.2007.00285.x
更新日期:2008-09-01 00:00:00
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更新日期:2009-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:2010-05-01 00:00:00
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pub_type: 杂志文章
doi:10.1562/2004-04-22-RA-147
更新日期:2004-09-01 00:00:00
abstract::UV radiation is a potent DNA damaging agent and a known inducer of skin cancer in experimental animals. There is excellent scientific evidence to indicate that most non-melanoma human skin cancers are induced by repeated exposure to sunlight. UV radiation is unique in that it induces DNA damage that differs from the l...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章,评审
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更新日期:1990-12-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:
更新日期:1999-04-01 00:00:00
abstract::Ultraviolet radiation (UVR) is hazardous to patients with photosensitive skin disorders, such as lupus erythematosus, xeroderma pigmentosum and skin cancer. As such, these patients are advised to minimize their exposure to UVR. Classically, this is accomplished through careful avoidance of sun exposure and artificial ...
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pub_type: 杂志文章
doi:10.1111/php.13272
更新日期:2021-01-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/php.13183
更新日期:2020-05-01 00:00:00
abstract::We previously reported that a low level of lysosomal photodamage potentiated the phototoxic effect of subsequent mitochondrial photodamage mediated by the benzoporphyrin derivative (BPD) in murine hepatoma 1c1c7 cells. This was attributed to release of Ca2+ from damaged lysosomes and a calpain-mediated conversion of t...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/php.12805
更新日期:2017-11-01 00:00:00
abstract::Polysulphone (PS) dosimetry has been a widely used technique for more than 30 years to quantify the erythemally effective UV dose received by anatomic sites (personal exposure). The calibration of PS dosimeters is an important issue as their spectral response is different from the erythemal action spectrum. It is perf...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
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更新日期:2012-01-01 00:00:00
abstract::The relationship between levels of in vivo accumulated photosensitizer (Photofrin II), photodynamic cell inactivation upon in vitro or in vivo illumination, and changing tumor oxygenation was studied in the radiation-induced fibrosarcoma (RIF) mouse tumor model. In vivo porphyrin uptake by tumor cells was assessed by ...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1989.tb04110.x
更新日期:1989-03-01 00:00:00
abstract::We studied the spectral characteristics of the larvae of three sympatric Belgian species of fireflies, Lampyris noctiluca, Phosphaenus hemipterus and Lamprohiza splendidula. An in vivo spectral study was performed to compare bioluminescence spectra. The emission spectrum of a laboratory reared female L. noctiluca was ...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1562/2003-11-11-RA.1
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:
更新日期:1999-10-01 00:00:00
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journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1996.tb01863.x
更新日期:1996-12-01 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::Collagen was exposed to an ultraviolet (UV) lamp that emitted predominantly in the UVB range. The cross-linking of collagen type I and type IV by UV irradiation was observed. Amino acid analyses revealed that Tyr residues in both collagen types I and IV were decreased by irradiation. In collagen type IV, losses of His...
journal_title:Photochemistry and photobiology
pub_type: 杂志文章
doi:10.1111/j.1751-1097.1995.tb08624.x
更新日期:1995-04-01 00:00:00