Výsledky vyhledávání - "B J, Ortwerth"

Electron paramagnetic resonance and spin trapping investigations of the photoreactivity of human lens proteins

Autor: J, Dillon, B J, Ortwerth, C F, Chignell, K J, Reszka

Publikováno v: Photochemistry and photobiology. 69(2)

Oxidation of cysteine, glutathione and ascorbate by photoexcited proteins from normal and cataractous lenses was investigated using electron paramagnetic resonance in combination with spin trapping. We report that illumination of these proteins in pH

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::0168c476523561457fe42f2d5041d731
https://pubmed.ncbi.nlm.nih.gov/10048318

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Ascorbic acid and glucose oxidation by ultraviolet A-generated oxygen free radicals

Autor: A, Giangiacomo, P R, Olesen, B J, Ortwerth

Publikováno v: Investigative ophthalmologyvisual science. 37(8)

To determine the relative rate of oxidation of ascorbic acid (ASA) and glucose under conditions used for glycation reactions in vitro and by ultraviolet A (UVA)-generated oxygen free radicals using human lens sensitizers.ASA and [14C]glucose were inc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::004e158b0f6973e9c7fc808048827171
https://pubmed.ncbi.nlm.nih.gov/8675397

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Transfer RNA(4lys) and cell cycle progression: characterization of ts-694 cells

Autor: J J, Turchi, G A, Weisman, B J, Ortwerth

Publikováno v: Experimental cell research. 195(2)

Lysine tRNA modification has been studied in mammalian ts-694 cells with respect to cell cycle progression in temperature downshift and upshift experiments. The modification of tRNA(lys) measured in temperature downshift experiments showed that tRNA(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::45c91b79a18415675784331d90082b1f
https://pubmed.ncbi.nlm.nih.gov/2070834

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A preferential role for lysyl-tRNA4 in the synthesis of diadenosine 5',5''-P1P4-tetraphosphate by an arginyl-tRNA synthetase-lysyl-tRNA synthetase complex from rat liver

Autor: B. J. Ortwerth, Richard H. Hilderman

Publikováno v: Biochemistry. 26:1586-1591

The synthesis of diadenosine 5',5'''-P1,P4-tetraphosphate (Ap4A) can be catalyzed in vitro by a tetrameric tRNA synthetase complex from rat liver containing two lysyl-tRNA synthetase and two arginyl-tRNA synthetase subunits. This reaction required AT

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c7e47a6222cd521638b1ca542dbab6a
https://doi.org/10.1021/bi00380a015

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Isolation and characterization of a new aminopeptidase from bovine lens

Autor: B J Ortwerth, K K Sharma

Publikováno v: Journal of Biological Chemistry. 261:4295-4301

An aminopeptidase has been purified to homogeneity from bovine lens tissue by gel filtration and DEAE-cellulose chromatography. This enzyme has a molecular weight of 96,000 under both native and denaturing conditions. The purified enzyme hydrolyzed a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::79cf66fce571f9814ddaec6fa9ea8381
https://doi.org/10.1016/s0021-9258(17)35660-0

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The nucleotide sequence of two bovine lens phenylalanine tRNAs. Possible activation of a new phenylalanine tRNA gene during differentiation of lens cells

Autor: T D Furr, F K Lin, J Horwitz, B J Ortwerth, P F Agris, S H Chang

Publikováno v: Journal of Biological Chemistry. 255:6020-6023

Bovine lens fiber cells contain two major isoacceptors of phenylalanine tRNA, tRNA1Phe and tRNA2Phe whereas lens epithelial cells contain mainly tRNA2Phe (Ortwerth, B.J,, Yonuschot, G.R., Heidlege, J.F., Chu-Der, O.M.Y., Juarez, D., and Hedgcoth, C.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7b45968de9f98cd2f1bb1d826130480d
https://doi.org/10.1016/s0021-9258(18)43691-5

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