نتایج جستجو برای: amino acid biosynthesis
تعداد نتایج: 869526 فیلتر نتایج به سال:
Computational comparative techniques were applied to analysis of the aromatic amino acid regulons in gamma-proteobacteria. This resulted in characterization of the TrpR and TyrR regulons in the genomes of Yersinia pestis, Haemophilus influenzae, Vibrio cholerae and other bacteria and identification of new members of the PhhR regulon in the genome of Pseudomonas aeruginosa. Candidate attenuators...
در این پایان نامه، ابتدا به شرح روش تهیه و بررسی خواص طیفی و مغناطیسی چهار کمپلکس کروم(iii) و دو کمپلکس منگنز(ii) با فرمول های بسته cr(l)3 ، cr2(l)2(oh)5(ch3coo) ، mn(l)4cl2 و mn(l)4(no3)2 پرداخته شده است که در آن هاl= 2-carboxylic acid pyridine ، 2-amino-4-methyle pyridine، 2-amino-3-methyle pyridine ،3-methanol pyridine و acid hydrazide 4-pyridine carboxylic می باشد. در ادامه، دو لیگاند با...
The biosynthesis of penicillin by strains Penicillium chrysogenum requires a supply of of the amino acids valine, cysteine and a-aminoadipic acid1}. a-Aminoadipic acid has received most attention since it is an intermediate of lysine biosynthesis in fungi2) and therefore forms a branch point between lysine and penicillin biosynthesis in P. chrysogenumz~6). Higher producing strains of P. chrysog...
The natural product rapamycin, produced during fermentation by Streptomyces hygroscopicus, is known for its potent antifungal, immunosuppressive, and anticancer activities. During rapamycin biosynthesis, the amino acid l-pipecolate is incorporated into the rapamycin molecule. We investigated the use of precursor-directed biosynthesis to create new rapamycin analogs by substitution of unusual l-...
The shikimate pathway consists of seven enzymatic reactions whose end product chorismate is the precursor for the synthesis of the aromatic amino acids Phe, Tyr and Trp. In fungi and plants, chorismate is a precursor for many specialised metabolites (i.e. secondary metabolites) that play an important role in the plant’s interaction with its environment. The shikimate pathway and aromatic amino ...
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