An evaluation of the substrate specificity and asymmetric synthesis potential of the cloned <scp>L</scp>-lactate dehydrogenase from <i>Bacillus</i><i>stearothermophilus</i>
作者:Daniel Bur、Marcel A. Luyten、Hla Wynn、Louis R. Provencher、J. Bryan Jones、Marvin Gold、James D. Friesen、Anthony R. Clarke、J. John Holbrook
DOI:10.1139/v89-161
日期:1989.6.1
assure its plentiful supply. Its specificity for keto acid substrates possessing straight- and branched-chain alkyl, cyclopropyl, or phenyl groups has been evaluated in preparative and kinetic terms, and compared with that of the mammalian pig heart enzyme (PHLDH). The specificities of BSLDH and PHLDH are similar, with branched alkyl-chain keto acids being poor substrates for both enzymes. Keywords: enzymes
已经证明了嗜热脂肪芽孢杆菌 (BSLDH) 的 L-乳酸脱氢酶在立体特异性的、制备规模的将 α-酮酸还原为 (S)-α-羟基酸的潜在效用 > 99% ee。BSLDH 是一种稳定的嗜热酶,其基因已被克隆到高表达载体中以确保其充足供应。它对具有直链和支链烷基、环丙基或苯基的酮酸底物的特异性已在制备和动力学方面进行了评估,并与哺乳动物猪心脏酶 (PHLDH) 的特异性进行了比较。BSLDH 和 PHLDH 的特异性相似,支链烷基链酮酸是两种酶的不良底物。关键词:有机合成中的酶,乳酸脱氢酶,不对称合成。