l the three L's 【航海】三L〔指 lead (测铅)的用法, latitude (纬度)的知识,及严密的 look-out (守望)〕。 L-beam, L-iron 不等边角钢。 L,£ = 〔拉丁语〕 libra (= pound)。
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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?环糊精与芳香族氨基酸l ?苯丙氨酸、 l ?酪氨酸和l ?色氨酸之间的包合作用,考察了?环糊精用量、温度、时间和ph值等因素对包合作用的影响。
Puc18 - 169 was a subcloned plasmid containing the whole operon sequence of l - hydantoinase from arthrobacter bt801 which can convert 5 - benzylhydantoin to l - phenylalanine . hydantoin hydrolase which is responsible for the ring opening of hydantoin is one of the components of hydantoin utility enzymes of arthrobacter bt801 . n - carbamoylase is a part of hydantoinase operon which can transform n - carbamoylamino acids into the corresponding amino acids 节杆菌( arthrobacter ) bt801是由军事医学科学院生物工程研究所保存的l -乙内酰脲酶产酶菌株, puc18 - 169是由本室构建的含有节杆菌bt801的l -乙内酰脲酶完整操纵子序列的亚克隆质粒。