共查询到20条相似文献,搜索用时 31 毫秒
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Repressor- and activator-type ethylene response factors functioning in jasmonate signaling and disease resistance identified via a genome-wide screen of Arabidopsis transcription factor gene expression 总被引:13,自引:0,他引:13
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McGrath KC Dombrecht B Manners JM Schenk PM Edgar CI Maclean DJ Scheible WR Udvardi MK Kazan K 《Plant physiology》2005,139(2):949-959
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Yoshihisa Tanaka Masanobu Kirita Yuko Abe Satoshi Miyata Motoyuki Tagashira Tomomasa Kanda 《Bioscience, biotechnology, and biochemistry》2013,77(7):1140-1146
Seven new O-methylated theaflavins (TFs) were synthesized by using O-methyltransferase from an edible mushroom. Using TFs and O-methylated TFs, metabolic stability in pooled human liver S9 fractions and inhibitory effect on H2O2-induced oxidative damage in human HepG2 cells were investigated. In O-methylation of theaflavin 3′-O-gallate (TF3′G), metabolic stability was potentiated by an increase in the number of introduced methyl groups. O-methylation of TF3,3′G did not affect metabolic stability, which was likely because of a remaining 3-O-galloyl group. The inhibitory effect on oxidative damage was assessed by measuring the viability of H2O2-damaged HepG2 cells treated with TFs and O-methylated TFs. TF3,3′G and O-methylated TFs increased cell viabilities significantly compared with DMSO, which was the compound vehicle (p?<?0.05), and improved to approximately 100%. Only TF3′G did not significantly increase cell viability. It was suggested that the inhibitory effect on H2O2-induced oxidative damage was potentiated by O-methylation or O-galloylation of TFs. 相似文献
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BEL1‐LIKE HOMEODOMAIN 11 regulates chloroplast development and chlorophyll synthesis in tomato fruit
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Lanhuan Meng Zhongqi Fan Qiang Zhang Cuicui Wang Ying Gao Yikang Deng Benzhong Zhu Hongliang Zhu Jianye Chen Wei Shan Xueren Yin Silin Zhong Donald Grierson Cai‐Zhong Jiang Yunbo Luo Da‐Qi Fu 《The Plant journal : for cell and molecular biology》2018,94(6):1126-1140
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Selective influence of Sox2 on POU transcription factor binding in embryonic and neural stem cells
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Tapan Kumar Mistri Arun George Devasia Lee Thean Chu Wei Ping Ng Florian Halbritter Douglas Colby Ben Martynoga Simon R Tomlinson Ian Chambers Paul Robson Thorsten Wohland 《EMBO reports》2015,16(9):1177-1191
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Magdalien van der Westhuizen Paul Steenkamp Zeno Apostolides 《Biocatalysis and Biotransformation》2015,33(5-6):298-309
The principal pigments present in black tea, theaflavins (TF), have been indicated to be of potential clinical significance in various fields of research which has been hampered by the very low levels of TFs from black tea extractions, being the original method employed to acquire TFs. Forelle pear (44?µM TF/g dry weight/h) and Yacon leaf (65?µM TF/g dry weight/h) homogenates were tested for their TF synthesis capacity and found to have a larger TF synthesis capacity than a green tea leaf homogenate (26?µM TF/g dry weight/h) based upon the flavognost method. In an incubation system of green tea leaf extract utilizing endogenous enzymes present in Forelle pear and Yacon homogenates to synthesize TF, the formation of an unknown peak [m/z 563.1349; (23.95)5; C26H28O14] was detected by mass spectrometry with a molecular mass similar to TF. This is in contrast to TF being solely synthesized in an in vitro model incubation system using isolated catechins and purified Forelle pear polyphenol oxidase. The preferential formation of the unknown compound could explain the low levels of TFs in black tea. 相似文献