Showing papers on "Isoflavones published in 1989"
TL;DR: Sir: Tyrosine protein kinase is known to be associated with oncogene products of the retroviral src gene family, and it is supposed that tyrosine-phosphorylation plays an important role for diverse cell functions.
Abstract: Sir: Tyrosine protein kinase is known to be associated with oncogene products of the retroviral src gene family^. This kinase activity is closely correlated with the ability of retroviruses to transform cells, since mutants of viruses which lack tyrosine kinase activity are defective in malignant transformation^. Similar kinase activities are also associated with the cellular receptors for growth factors such as epidermal growth factor (EGF)3) , PDGF4) , insulin5) , insulinlike growth factor I6) and CSF-17). It is supposed therefore that tyrosine-phosphorylation plays an important role for diverse cell functions,
129 citations
TL;DR: A further investigation of the methanol extractives from white lupin (cv. Kievskij Mutant) roots has revealed a new coumaronochromone (lupinalbin F) and 13 new isoflavones as discussed by the authors.
76 citations
29 citations
Patent•
09 Aug 1989TL;DR: The chemical compounds that induce expression of nodulation genes of Bradyrhizobium japonicum strains have been identified as discussed by the authors, and soybean inoculating compositions containing the nod-gene inducers and inoculating methods employing these compositions are described.
Abstract: The chemical compounds that induce expression of nodulation genes of Bradyrhizobium japonicum strains have been identified. The isoflavones daidzein and genistein were identified as soybean exudate components that induce nod-genes. Other isoflavones, including 7-hydroxyisoflavone, 5,7-dihydroxyisoflavone, biochanin A, formononetin and prunetin, were also found to act as inducers. In addition, several flavonoid compounds including 4',7-dihydroxyflavone, apigenin, kaempferol and coumestrol, were also found to act as inducers. Nodulation inducing compositions and a method for selectively activating the expression of a gene under the control of a soybean exudate inducible promoter in B. japonicum in response to these inducer molecules are described. In addition, soybean inoculating compositions containing the nod-gene inducers and inoculating methods employing these compositions are described.
9 citations