초고온성 아케아 써모코커스 NA1으로부터 펩티다제의 특성

Title
초고온성 아케아 써모코커스 NA1으로부터 펩티다제의 특성
Alternative Title
Characterization of Peptidases from the Hyperthermophilic Archaeon Thermococcus sp. NA1
Author(s)
이현숙; 임재규; 김윤재; 전정호; 강성균; 김상진; 이정현
KIOST Author(s)
Lee, Hyun Sook(이현숙)Kang, Sung Gyun(강성균)Lee, Jung Hyun(이정현)
Publication Year
2005-10-09
Abstract
Thermococcus sp. NA1 is one of the hyperthermophilic archaea collected from a deep-sea hydrothermal vent area at the PACMANUS field in the EAST Manus Basin. As a part of genomic research of the Thermococcus sp. NA1, genes which had high sequence similarity to the genes encoding the peptidases (prolyl aminopeptidase, methionyl aminopeptidase, prolyl endopeptidase, and carboxypeptidase) from Thermococcus kodakaraensis KOD1 (74%, 85%, 83%, and 90% identity, respectively) were revealed. The genes encoding prolyl aminopeptidase, methionyl aminopeptidase, prolyl endopeptidase, and carboxypeptidase comprise open reading frames of 1,071 bp, 888 bp, 1,851 bp, and 1,500 bp, corresponding to polypeptides of 356, 295, 616, and 499 amino acids with predicted molecular mass of 39,713 Da, 32,981 Da, 70,380 Da, and 59,197 Da, respectively. To characterize the peptidases, the genes were cloned and overexpressed in Escherichia coli with the pET vector system, and the expressed enzymes had high hydrolytic activities for peptidases at high temperatures. Substrate specificity, inhibitor sensitivity, temperature and pH dependence, and metal ion requirement for enzyme activity were examined and their inherent biotechnological potentials were investigated.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/31311
Bibliographic Citation
국제18차효소공학회 프로시딩, pp.96, 2005
Publisher
국제효소공학회
Type
Conference
Language
English
Publisher
국제효소공학회
Related Researcher
Research Interests

marine biotechnology,molecular microbiology,해양생명공학,분자미생물학

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