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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.2
- 수록면
- 9 - 15 (7page)
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The gene expression at the branch point of chlorophyll and heme synthesis in the model microalga, Chlamydomonas reinhardtii, is different from that of higher plants. Another green alga, Arctic Chlorella, was recently isolated from Arctic sea ice and may be a promising candidate for a biofuel. To understand the chlorophyll metabolic pathway and relevant nuclear gene expression in Chlorella sp., we characterized chlorophyll-deficient mutants of the Arctic Chlorella sp. ArM0029B. First, we characterized the chlorophyll and heme biosynthetic pathways based on genes identified by bioinformatics analysis of the genome of Arctic Chlorella sp. ArM0029B. Then, we isolated and analyzed nine chlorophyll-deficient mutants that showed reduced expression of the ChlM gene, which encodes Mgprotoporphyrin methyltransferase. Expression of 5-amino levulinic acid dehydratase (encoded by ALAD) and glutamyl- tRNA reductase (encoded by HemA) was reduced in all nine independent mutants compared to wild type. These results indicated that Arctic Chlorella ArM0029B may have a regulatory mechanism of gene expression at earlier steps of the Mg-porphyrin branch that is more similar to higher plants than to the microalga C. reinhardtii. This study provides useful insight into the regulation of porphyrin precursor formation in Chlorella and related microalgae.
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참고문헌 (15)
참고문헌 신청
Joon-Woo Ahn / 2012 / A new Arctic Chlorella species for biodiesel production / Bioresource Technology 125:340~343
Ali E. Alawady / 2005 / Tobacco Mg protoporphyrin IX methyltransferase is involved in inverse activation of Mg porphyrin and protoheme synthesis / The Plant Journal 41(2):282~290
Samuel I. Beale / 1999 / Enzymes of chlorophyll biosynthesis / Photosynthesis Research 60(1):43~73
Akinori Ikegami / 2007 / The CHLI1 subunit of Arabidopsis thaliana Magnesium Chelatase is a target protein of the chloroplast thioredoxin / Journal of Biological Chemistry 282(27):19282~19291
Jeongyeo Lee / 2014 / A MORN-domain protein regulates growth and seed production and enhances freezing tolerance in Arabidopsis / Plant Biotechnology Reports 8(2):229~241
Ali E. Alawady / 2005 / Tobacco Mg protoporphyrin IX methyltransferase is involved in inverse activation of Mg porphyrin and protoheme synthesis / The Plant Journal 41(2):282~290
Samuel I. Beale / 1999 / Enzymes of chlorophyll biosynthesis / Photosynthesis Research 60(1):43~73
Akinori Ikegami / 2007 / The CHLI1 subunit of Arabidopsis thaliana Magnesium Chelatase is a target protein of the chloroplast thioredoxin / Journal of Biological Chemistry 282(27):19282~19291
Jeongyeo Lee / 2014 / A MORN-domain protein regulates growth and seed production and enhances freezing tolerance in Arabidopsis / Plant Biotechnology Reports 8(2):229~241
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