Production of lysine by pyruvate dehydrogenase mutants of Brevibacterium flavum.
نویسندگان
چکیده
منابع مشابه
Threonine production by dihydrodipicolinate synthase-defective mutants of Brevibacterium flavum.
A novel type of threonine-producing strains, dihydrodipicolinate synthase (DPS)-defective mutants of Brevibacterium flavum, was isolated as alpha-amino-beta-hydroxyvaleric acid (AHV)-resistant producers. The third selection markers used were a strong lysine inhibition of threonine production and a lower production of lysine than that of threonine in those derived from strains with feedback-sens...
متن کاملOptimization of Physico-chemical Parameters for Hyper- Production of Lysine by Mutated Strain of Brevibacterium Flavum
Lysine as an essential amino acid supplemented to fulfil the dietary requirement of Poultry feed. In Pakistan all this demand is accomplished by importing lysine for feed sector. Wild Brevibacterium flavum was used to induce mutation by random mutagenesis for hyper production of lysine through fermentation. The highest lysine producing strain (BFENU2) was screened with 21.64 g/L production by m...
متن کاملMicrobial Production of L-lysine I. Production by Auxotropiis of Brevibacterium Elavum
Seven homoserine, 42 methionine, 42 threonine, and 15 isoleucine auxotrophs were obtained from Brevibacterium flavum No. 2247 (ATCC No. 14067) by X-ray irradiation and N-methyl-N'-nitro-N-nitrosoguanidine treatment. Concerning the L-lysine-producing ability, the homoserine auxotrophs were the best and about one-half of the threonine auxotrophs ranked next. The rest of threonine auxotrophs and a...
متن کاملProduction of S-Methylthioacetate by Brevibacterium linens.
Volatile sulfur compounds production by eight strains of Brevibacterium linens isolated from cheeses was demonstrated: methanethiol, dimethyldisulfide, and 2,3,4-trithiapentane. Four of these strains also produced S-methylthioacetate, an important aroma component of smear-coated cheeses. It is the first demonstrated microbiological production of a thioester.
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در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1984
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.48.3091