Mi-Ji Yu, Young-Jong Kim, Maohua Qu, Young-Wan Kim
언어
영어(ENG)
URL
https://www.earticle.net/Article/A294687
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원문정보
초록
영어
Lytic polysaccharide monooxygenases (LPMOs) are copper ion containing enzymes to cleave crystalline cellulose or chitin through an oxidative mechanism. Despite the importance of LPMOs for biomass decomposition, basic biochemical methods for characterizing LPMOs, such as activity assays are not well developed. Generally, LPMO activity has been determined by HPLC analysis of the product by simultaneous action of a LPMO and one of a cellulase and a chitinase depending on LPMO’s substrate specificity. Recently a spectrophotometric method has been developed using the side reaction of LPMOs to produce H2O2 in the absence of polysaccharide substrates. However, both assay methods do not give the information about polysaccharide lysis by only LPMOs. In this study, we developed an assay method for LPMOs based on the consumption of ascorbic acid that was used as an external electron donor for LPMOs. The assay method allowed determining the concentration-dependent activity of a chitin active LPMO from Bacillus atrophaeus 1942. This assay method would be a useful tool for detail characterization of LPMOs.
저자
Mi-Ji Yu [ Department of Food and Biotechnology, Korea University ]
Young-Jong Kim [ Department of Food and Biotechnology, Korea University ]
Maohua Qu [ Department of Food and Biotechnology, Korea University ]
Young-Wan Kim [ Department of Food and Biotechnology, Korea University ]
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.