JP5726165B2 - アオウキクサ由来の新規リポキシゲナーゼ - Google Patents
アオウキクサ由来の新規リポキシゲナーゼ Download PDFInfo
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- JP5726165B2 JP5726165B2 JP2012504547A JP2012504547A JP5726165B2 JP 5726165 B2 JP5726165 B2 JP 5726165B2 JP 2012504547 A JP2012504547 A JP 2012504547A JP 2012504547 A JP2012504547 A JP 2012504547A JP 5726165 B2 JP5726165 B2 JP 5726165B2
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- lipoxygenase
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/0004—Oxidoreductases (1.)
- C12N9/0069—Oxidoreductases (1.) acting on single donors with incorporation of molecular oxygen, i.e. oxygenases (1.13)
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Genetics & Genomics (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Microbiology (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Enzymes And Modification Thereof (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Description
様々な場所から採取された62種類のアオウキクサを準備し、1/2倍に稀釈したHutnerの培地中において、24〜25℃の昼光色蛍光ライトからの連続的な光照射の下で継代培養した。1/2倍に稀釈したHutnerの培地は、次の成分を含む:
スクロース 10g/l
K2HPO4 200mg/l
NH4NO3 100mg/l
EDTA遊離酸 250mg/l
Ca(NO3)・4H2O 176mg/l
MgSO4・7H2O 250mg/l
FeSO4・7H2O 12.4mg/l
MnCl2・4H2O 8.92mg/l
ZnSO4・7H2O 32.8mg/l
Na2MoO4・2H2O 12.6mg/l
H3BO3 7.1mg/l
Co(NO3)・6H2O 0.1mg/l
CuSO4・5H2O 1.97mg/l
を含み、KOH(50%)を用いてpH6.2〜6.5に調整した。
アオウキクサSH株及びアオウキクサ441株からRNeasy Plant Mini Kit(QIAGEN)を用いて全RNAを抽出後、アオウキクサのそれぞれの株の全RNA1.8μgを鋳型としてLongRange 2Step RT-PCR Kit(QIAGEN)によりcDNAを合成した。
その後、cDNAを鋳型とし、下記縮重プライマー(LpDPf、LpDPr)を用いて縮重PCR(PCR条件:初期変性94℃3分;94℃0.5分、47℃0.5分,72℃1.3分のサイクルを39回)を行い、目的とする9-リポキシゲナーゼの部分配列を得た。
LpDPf: 5'-GCITGGMGIACIGAYGARGARTTY-3' (配列番号7)
LpDPr: 5'-GCRTAIGGRTAYTGICCRAARTT-3' (配列番号8)
ここで、Iはイノシンを表す。
この縮重プライマーは、アオウキクサ・リポキシゲナーゼ遺伝子(cDNA)クローニングのためのプライマー設計には既にクローニングされている植物由来のリポキシゲナーゼ(ダイズ、ポテト、トマト、大麦、イネ)のアミノ酸配列について、相同性の高い領域から設計されたものである。
3’−RACE用プライマー
SH-3'-TP: 5'-AGCTCTTCATCTTGGACC-3' (配列番号9)
441-1-3'-TP: 5'-AAGCTTCTTCATCCCCACTTCC-3' (配列番号10)
441-2-3'-TP: 5'-AAGCTCCTTCATCCCCACTTCC-3' (配列番号11)
5’−RACE用プライマー
SH-5'-TP: 5'-TTTCATCCTTCTTGTCGC-3' (配列番号12)
441-1-5'-TP: 5'-GCTTGTATATTGGGTGCAC-3' (配列番号13)
441-2-5'-TP: 5'- AAGCAGTAACACGGTTCTGGAGG -3' (配列番号14)
上記実験で得られたSH株、441株の全RNA2μgを鋳型として、CapFishingTM target full-length cDNA cloning Kit(Seegene)を用いてcDNAを合成した。このcDNAを鋳型溶液として、キット内アダプタープライマー(3’−RACEプライマー)とSH−3’−TP、441−1−3’−TP又は441−2−3’−TPとそれぞれPCRを行った。
上記実験で得られたSH株、441株の全RNA2μgを鋳型として、CapFishingTM target full-length cDNA cloning Kit(Seegene)を用いてcDNAを合成した。このcDNAを鋳型溶液として、キット内アダプタープライマー(5’−RACEプライマー)とSH−5’−TP、441−1−5’−TP又は441−2−5’−TPとそれぞれPCRを行った。
アオウキクサSH株から得られたリポキシゲナーゼを、SHLpLOX、アオウキクサ441株から得られたリポキシゲナーゼを、441LpLOX1及び441LpLOX2と名付けた。
Claims (5)
- 以下の(a)〜(b):
(a) 配列番号1で表される塩基配列からなるDNA;及び
(b) 配列番号2で表されるアミノ酸配列からなるタンパク質をコードするDNA
からなる群から選ばれるDNAからなる遺伝子。 - 請求項1に記載のDNAとベクター断片とを結合させてなる発現ベクター。
- 請求項2に記載の発現ベクターを、宿主となる微生物、動物細胞又は植物細胞に導入してなる形質転換体。
- 請求項3に記載の形質転換体を培養することを特徴とする、9位生成物特異性リポキシゲナーゼの製造方法。
- 配列番号2で表わされるアミノ酸配列からなるタンパク質。
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JPN6014030214; 'Definition: Oryza sativa Japonica Group r9-LOX1 mRNA for 9-lipoxigenase, complete cds' Database GenBank [online], Accession No.AB099850 , 20080215 * |
JPN7014002207; MIZUNO, K. et al.: 'A new 9-lipoxygenase cDNA from developing rice seeds' Plant Cell Physiol. Vol.44, No.11, 200311, p.1168-1175 * |
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