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- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제23권 제2호
- 발행연도
- 2013.1
- 수록면
- 144 - 148 (5page)
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Lycopene cyclase converts lycopene to β-carotene by catalyzing the formation of two beta-rings at each end of the linear carotene structure. This reaction takes place as a two-step reaction in which both sides of of the lycopene molecule are cyclized into β-carotene rings via the monocyclic γ-carotene as an intermediate. The crtY gene coding for lycopene cyclase from Paracoccus haeundaensis consists of 1,158 base pairs encoding 386 amino acids residues. An expression plasmid containing the crtY gene (pET44a-CrtY) was constructed and expressed in Escherichia coli, and produced a recombinant protein of approximately 43 kDa, corresponding to the molecular mass of lycopene cyclase. The expressed protein was purified to homogeneity by His-tag affinity chromatography and showed enzymatic activity corresponding to lycopene cyclase. We also determined the lycopene substrate specificity and NADPH cofactor requirements of the purified protein. The Km values for lycopene and NADPH were 3.5 μM and 2 mM, respectively. The results obtained from this study will provide a wider base of knowledge on the enzyme characterization of lycopene cyclase at the molecular level.
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참고문헌 (15)
참고문헌 신청
Akyon, Y / 2002 / Effect of antioxidants on the immune response of Helicobacter pylori / Clin. Microbiol. Infect 8 : 438 ~ 441
Amar, Y / 2004 / Enhancement of innate immunity in rainbow trout (Oncorhynchus mykiss Walbaum) associated with dietary intake of carotenoids from natural products / Fish Shel
Bertran, J. S / 1999 / Carotenoids and gene regulation / Nutr. Rev 57 : 182 ~ 191
Bhupinder, S. H / 1993 / In vitro expression and activity of lycopene cyclase and β-carotene hydroxylase from Erwinia herbicola / FEBS Lett 315 : 329 ~ 334
Chemler, J. A / 2006 / Biosynthesis of isoprenoids, polyunsaturated fatty acids and flavonoids in Saccharomyces cerevisiae / Microb. Cell Fact 23 : 5 ~ 20
Amar, Y / 2004 / Enhancement of innate immunity in rainbow trout (Oncorhynchus mykiss Walbaum) associated with dietary intake of carotenoids from natural products / Fish Shel
Bertran, J. S / 1999 / Carotenoids and gene regulation / Nutr. Rev 57 : 182 ~ 191
Bhupinder, S. H / 1993 / In vitro expression and activity of lycopene cyclase and β-carotene hydroxylase from Erwinia herbicola / FEBS Lett 315 : 329 ~ 334
Chemler, J. A / 2006 / Biosynthesis of isoprenoids, polyunsaturated fatty acids and flavonoids in Saccharomyces cerevisiae / Microb. Cell Fact 23 : 5 ~ 20
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