イチハラ ヒデアキ   Ichihara Hideaki
  市原 英明
   所属   崇城大学  生物生命学部 応用生命科学科
   崇城大学大学院  工学研究科 応用生命科学専攻(博士前期課程)
   崇城大学大学院  工学研究科 応用生命科学専攻(博士後期課程)
   職種   教授
言語種別 英語
発行・発表の年月 2003/02
形態種別 原著論文
査読 査読有り
標題 Steric-control for the Enantioselective Hydrolysis of Amino Acid Esters in Hybrid Membrane Systems
執筆形態 共著
掲載誌名 Chemical & Pharmaceutical Bulletin
掲載区分国内
巻・号・頁 51(2),pp.224-226
著者・共著者 Tanoue O, Ichihara H, Goto K, Matsumoto Y, Ueoka R
概要 The enantioselective hydrolysis of the amino acid esters, p-nitrophenyl-N-dodecanoyl-D(L)-phenylalaninates (C(12)-D(L)-Phe-PNP) catalyzed by active tripeptide, N-(benzyloxycarbonyl)-L-phenylalanyl-L-histidyl-L-leucine (Z-PheHisLeu) in the presence of coaggregates (hybrid membranes) composed of native phospholipid, L-alpha-dimyristoylphosphatidylcholine (DMPC) and nonionic surfactant, polyoxyethylene (8) lauryl ether (C(12)(EO)(8)) was easily controlled by regulating the reaction temperature and changing the composition of coaggregates. Furthermore, excellent correlations were observed between the enantioselectivity in the hydrolysis of C(12)-D(L)-Phe-PNP catalyzed by Z-PheHisLeu in the presence of coaggregates and physical properties of hybrid membranes. It is assumed that catalytic activities of tripeptide catalyst in hybrid membranes should be regulated by changing the microenvironments of reaction fields.