The tryptophanase-tryptophan reaction. The nature of the enzyme-coenzyme-substrate complex

The tryptophanase-tryptophan reaction; the nature of the enzyme-coenzyme-substrate complex.

The tryptophanase-tryptophan reaction. 9. The nature, characteristics and partial purification of the tryptophanase complex.

The name tryptophanase was given by Happold & Hoyle (1935) to the enzyme complex of Escherichia coli which induces and catalyzes the production of indole from tryptophan by non-viable bacterial preparations with the consumption of five atoms of oxygen (Woods, 1935). The present communication describes the preparation of this complex in the cell-free state, and subsequent investigation of the co...

35 . The Tryptophanase - tryptophan Reaction

The facts described by Happold &'Hoyle [1936] and Evans et al. [1941] can be concisely stated as follows: (1) In a complex medium (e.g. bouillon, casein-digest, etc.) in which the presence of glucose in sufficient amount inhibits completely the production of indole by B. coli, the complete tryptophanase system is absent from the cells. (2) With a simple salt medium as used by Fildes, glucose on...

the plain x-ray the diagnosis of the acute abdomen_

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romantic education:reading william wordsworths the prelude in the light of the history of ideas

عصر روشنگری زمان شکل گیری ایده های مدرن تربیتی- آموزشی بود اما تاکید بیش از اندازه ی دوشاخه مهم فلسفی زمان یعنی عقل گرایی و حس گرایی بر دقت و وضوح، انسان عصر روشنگری را نسبت به دیگر تواناییهایش نابینا کرده و موجب به وجود آمدن افرادی تک بعدی شد که افتخارعقلانیتشان، تاکید شان بر تجربه فردی، به مبارزه طلبیدن منطق نیاکانشان وافسون زدایی شان از دنیا وتمام آنچه با حواس پنجگانه قابل درک نبوده و یا در ...