摘要:
The present invention provides engineered phenylalanine ammonia-lyase (PAL) enzymes comprising one or more mutations that increase the enzymes' tyrosine ammonia-lyase (TAL) activity. Also provided are plants comprising the engineered PAL enzymes and methods of using these plants to sequester CO2 or produce phenylpropanoid-derived products.
摘要:
The invention relates to a method for production of tyrosol, wherein a transgenic bacterial cell that heterologously expresses phenylpyruvate decarboxylase and that overexpresses phospho-2-dehydro-3-deoxyheptonate and prephenate dehydrogenase, and wherein pheAL and feaB are both inactivated or removed, is grown in a medium comprising a metabolic precursor of phosphoenolpyruvate (PEP) and erythrose 4-phosphate (E4P), particularly glucose, and optionally, phenylalanine as a supplement; and tyrosol is extracted from said medium. The invention also relates to a method for production of salidroside, wherein the transgenic cell additionally heterologously expresses uridine diphosphate dependent glycosyltransferase (UGT85A1, EC:2.4.1.)
摘要:
The present invention relates to nucleic acid sequences encoding a hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, abbreviated herein as HPPD) obtained from bacteria belonging to the subfamily Synechococcoideae, as well as the proteins encoded thereby, and to a chimeric gene which comprises such nucleic acid sequence, and to the use of such nucleic acid sequences, proteins or chimeric genes for obtaining plants which are tolerant to HPPD inhibitor herbicides.
摘要:
The present disclosure relates to engineered microorganisms that produce amino acids and amino acid intermediates. In particular, the disclosure relates to recombinant nucleic acids encoding operons that increase production of aromatic amino acids and the aromatic amino acid intermediate shikimate; microorganisms with increased production of aromatic amino acids and the aromatic amino acid intermediate shikimate; and methods related to the production of aromatic amino acids, the aromatic amino acid intermediate shikimate, and commodity chemicals derived therefrom.
摘要:
The present disclosure relates to engineered microorganisms that produce amino acids and amino acid intermediates. In particular, the disclosure relates to recombinant nucleic acids encoding operons that increase production of aromatic amino acids and the aromatic amino acid intermediate shikimate; microorganisms with increased production of aromatic amino acids and the aromatic amino acid intermediate shikimate; and methods related to the production of aromatic amino acids, the aromatic amino acid intermediate shikimate, and commodity chemicals derived therefrom.
摘要:
The present invention relates to nucleic acid sequences encoding a hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, abbreviated herein as HPPD) obtained from bacteria belonging to the genus Kordia, as well as the proteins encoded thereby, and to a chimeric gene which comprises such nucleic acid sequence, and to the use of such nucleic acid sequences, proteins or chimeric genes for obtaining plants which are tolerant to HPPD inhibitor herbicides.
摘要:
This invention relates to an isolated nucleic acid fragment encoding a tyrosine biosynthetic enzyme. The invention also relates to the construction of a chimeric gene encoding all or a portion of the tyrosine biosynthetic enzyme, in sense or antisense orientation, wherein expression of the chimeric gene results in production of altered levels of the tyrosine biosynthetic enzyme in a transformed host cell.
摘要:
The present invention relates to nucleic acid sequences encoding a hydroxyphenylpyruvate dioxygenase (EC 1.13.11.27, abbreviated herein as HPPD) obtained from bacteria belonging to the subfamily Synechococcoideae, as well as the proteins encoded thereby, and to a chimeric gene which comprises such nucleic acid sequence, and to the use of such nucleic acid sequences, proteins or chimeric genes for obtaining plants which are tolerant to HPPD inhibitor herbicides.
摘要:
The present invention provides cells genetically engineered to express mutated chorismate mutase/prephenate dehydrogenase (CM/PDH), the nucleic acid coding for each mutated CM/PDH and similar nucleic acids and methods for utilizing cells expressing mutated CM/PDH to produce tyrosine.
摘要:
The invention concerns novel enzymes having an arogenate dehydrogenase activity, in particular arogenate dehydrogenase enzymes of plants, and the genes encoding said enzymes. The inventive arogenate dehydrogenase enzymes catalyze the last stage of the metabolic pathway of tyrosine biosynthesis, and constitute, as such, potential targets of herbicides. Hence the invention also concerns a method for identifying herbicide compounds targeting said enzymes, said herbicide compounds preventing tyrosine biosynthesis by being fixed on said enzymes. The invention further concerns transgenic plants tolerant to herbicide compounds targeting an enzyme involved in the tyrosine biosynthesis pathway, in particular an enzyme involved in the transformation of L-tyrosine prephenate, in particular an arogenate dehydrogenase enzyme. Said plants become tolerant by expression in their tissues of a prephenate dehydrogenase enzyme, said enzyme being insensitive to said herbicide compounds and enabling the plant to synthetize tyrosine despite being treated with said herbicide compounds.