l-tryptophan 中文意思是什麼
l-tryptophan
解釋
左旋色氨酸- l : L-beam, L-iron 不等邊角鋼。L,￡＝ 〈拉丁語〉 libra （＝ pound）。
- tryptophan : n. 【生物化學】色氨酸。
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Study on breeding of l - tryptophan - producing strain and its fermentation conditions
色氨酸生產菌的選育及其發酵條件的研究 -
The inclusion behaviors of b - cyclodextrin with some aromatic amino acids such as l - phenylalanine, l - tyrosine and l - tryptophan were studied via ultraviolet and fluorescent spectrometry. the results indicated that inclusion complexes of - cyclodextrin with aromatic amino acids could be formed and the inclusion behaviors were affected by the amount of - cyclodextrin, temperature and ph value
本文研究了?環糊精與芳香族氨基酸l ?苯丙氨酸、 l ?酪氨酸和l ?色氨酸之間的包合作用，考察了?環糊精用量、溫度、時間和ph值等因素對包合作用的影響。 -
L - tryptophan is a neutral, genetically coded amino acid. iit is essential in human nutrition. formed from proteins during the digestive process by the action of proteolytic enzymes
色氨酸是一種重要的中性必需氨基酸，在消化過程中，通過蛋白水解作用酶的運動而由蛋白質形成。 -
Induced either by iptg or l - tryptophan in the absence of easily metabolized carbon such as glucose the strain bl21 ( de3 ) / pet28c - tnaa can express tryptopanase. the fermentation conditions were optimized respectively. in the presence of glucose and iptg as induce agent, the concentration is the crucial factor for expression of active tryptophanase. if the iptg concentration is less than 0. 2mm, the optimum temperature is 37 lower temperature is necessary to obtain active tryptophanase in the case of higher concentration of iptg
用iptg誘導表達實驗結果表明：利用t7啟動子在胞內能表達出有活性的酶； iptg與溫度的合適組合可以得到較高活性的色氨酸酶，在0 . 2mm以下濃度的iptg誘導時， 37是最適溫度，而用較高濃度的iptg誘導，低溫是表達有活性的色氨酸酶的必要條件，而且誘導時間要短。
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