CN110791521A - 一种产电重组希瓦氏菌株及构建方法及用途 - Google Patents

一种产电重组希瓦氏菌株及构建方法及用途 Download PDF

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CN110791521A
CN110791521A CN201910930651.3A CN201910930651A CN110791521A CN 110791521 A CN110791521 A CN 110791521A CN 201910930651 A CN201910930651 A CN 201910930651A CN 110791521 A CN110791521 A CN 110791521A
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宋浩
李锋
刘向
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Abstract

本发明公开了一种产电重组希瓦氏菌株及构建方法及用途,该方法包括如下步骤:敲除野生型希瓦氏菌Shewanella oneidensis MR‑1的目标基因SO_1942,得到产电重组希瓦氏菌株Δ1942,所述基因SO_1942的核苷酸序列如SEQ ID NO 15所示。本发明构建的一种产电重组希瓦氏菌株Δ1942为基因缺陷型菌株,该菌株可以提高胞内环鸟苷二磷酸(cyclic di‑GMP,c‑di‑GMP)的浓度,c‑di‑GMP的增加可以促进细胞表面附着和生物膜的形成,进而增强胞外电子传递速率,提高微生物燃料电池的功率密度。

Description

一种产电重组希瓦氏菌株及构建方法及用途
技术领域
本发明涉及生物能源技术领域,更具体的说是涉及一种产电重组希瓦氏菌株及构建方法及用途。
背景技术
能源短缺和环境污染是我国现今面临的日益严峻的问题,因而能源开发和环境废物治理及过程中能源可再生利用成为了我国现代社会进行可持续发展的一大挑战。科学家们不断寻找新的技术解决方案,其中微生物燃料电池(MicrobialFuelCell,MFC)就是其中之一用来产生可替代能源和环境废物治理新装置,并且其重要性现今日益显现。
MFC是利用产电微生物作为阳极催化剂将有机物中的化学能转化为电能的装置。微生物产电能力相差很大,产电微生物决定着MFC的功能及应用,希瓦氏菌(Shewanellaoneidensis)属是目前发现的广泛用于MFC中产电的微生物之一,其代谢路径和胞外电子传递路径研究的比较明确。Shewanella oneidensis MR-1(简称希瓦氏菌MR-1)是希瓦氏菌属中在基因组序列注释和遗传特性方面研究最广泛的菌株。该菌株能够在不添加外源媒介的情况下,将电子转移到微生物燃料电池中的阳极,成为研究微生物如何在MFCs中产生电流的模型生物之一。
研究表明微生物胞外电子传递(Extracellular Electron Transfer,EET)是一个受多种细胞成分影响的复杂过程。其中生物膜的厚度直接影响胞外电子传递的强度,影响生物燃料电池的功率密度。但野生型希瓦氏菌株MR-1细胞粘附性较弱,不能形成较厚且稳定的生物膜。因此,构建易于形成生物膜的希瓦氏菌株,不仅能够弥补希瓦氏菌的一些缺陷,而且也能够提高MFC的电化学效果。
发明内容
本发明的目的在于克服现有技术的不足,提供一种产电重组希瓦氏菌株。
本发明的第二个目的是提供一种产电重组希瓦氏菌株的构建方法。
本发明的第三个目的是提供一种产电重组希瓦氏菌株的用途。
本发明的技术方案概述如下:
一种产电重组希瓦氏菌株的构建方法,包括如下步骤:敲除野生型希瓦氏菌Shewanella oneidensis MR-1的目标基因SO_1942,得到产电重组希瓦氏菌株Δ1942,所述基因SO_1942的核苷酸序列如SEQ ID NO 15所示。
上述方法构建的一种产电重组希瓦氏菌株Δ1942。
上述一种产电重组希瓦氏菌株Δ1942产电的用途。
本发明的优点:
本发明构建的一种产电重组希瓦氏菌株Δ1942为基因缺陷型菌株,该菌株可以提高胞内环鸟苷二磷酸(cyclic di-GMP,c-di-GMP)的浓度,c-di-GMP的增加可以促进细胞表面附着和生物膜的形成,进而增强胞外电子传递速率,提高微生物燃料电池的功率密度。
附图说明
图1为引物设计与同源区基因扩增方法。
图2为希瓦氏菌MR-1与一种产电重组希瓦氏菌株Δ1942MFC产电电压对比图。
图3为电化学表征图。
具体实施方式
原始菌株野生型希瓦氏菌Shewanella oneidensis MR-1简称:野生型希瓦氏菌MR-1,于2010年9月购自ATCC(美国,https://www.atcc.org/)公司的ATCC 700550菌株。
下面结合具体实施例对本发明作进一步的说明。
实施例1
一种产电重组希瓦氏菌株的构建方法,包括如下步骤:敲除野生型希瓦氏菌MR-1的目标基因SO_1942,得到产电重组希瓦氏菌株Δ1942,所述基因SO_1942的核苷酸序列如SEQ ID NO 15表示。
具体构建方法包括如下步骤:
利用att位点特异性重组和双交换删除的方法敲除野生型希瓦氏菌MR-1目标基因SO_1942。
(1)引物设计和基因扩增:
从NCBI数据库获得希瓦氏菌MR-1的基因组序列,根据目标基因SO_1942及其上下游基因序列设计三对引物,1942-LF(SEQ ID NO.4)和1942-LR(SEQ ID NO.5)、1942-5-O(SEQ ID NO.6)和1942-5-I(SEQ ID NO.7)、1942-3-O(SEQ ID NO.8)和1942-3-I(SEQ IDNO.9),在体外扩增目的基因上游同源区和下游同源区,其中包含部分目的基因序列,扩增长度大约500-1000bp,再通过融合PCR把上下游同源区基因连接在一起,形成融合同源区片段。如图1所示。其中在引物1942-5-O和1942-3-O的5’端分别添加特异性位点attB1和attB2,在引物1942-5-I和1942-3-I的5’端添加一个20bp左右的同源互补序列(Linker)。
上游同源区的核苷酸序列如SEQ ID NO.1所示;
下游同源区的核苷酸序列如SEQ ID NO.2所示;
融合同源区的核苷酸序列如SEQ ID NO.3所示;
特异性位点attB1和attB2的核苷酸序列分别如SEQ ID NO.10、SEQ ID NO.11所示;
同源互补序列(Linker)的核苷酸序列如SEQ ID NO.12所示;
(2)将步骤(1)获得的融合片段通过att位点特异性重组整合到自杀质粒pHG1.0载体(核苷酸序列如SEQ ID NO.13示)上,构建好的质粒先转入大肠杆菌WM3064(商业菌株)中,然后WM3064与希瓦氏菌MR-1结合转移,将构建好的质粒转入希瓦氏菌MR-1中。希瓦氏菌MR-1需要在LB培养基中,30℃培养,而大肠杆菌WM3064其生长需要在LB培养基中添加0.3M/mL DAP(2,6-二氨基庚二酸),37℃培养。
a、att位点特异性重组反应体系(5uL):
融合片段:1uL(75ng)
pHG1.0:1uL(75ng)
BP clonase II enzyme mix:1uL
H2O:2uL
b、Gateway BP clonase II enzyme反应程序:
将上述各种成分混匀,在25℃条件下反应5小时,然后降温到4℃保存;
c、WM3064化学转化步骤:
1.从-80℃冰箱中取50ul WM3064感受态细胞置于冰上10min;
2.把b中反应复合物与WM3064感受态细胞在1.5mL的离心管中混匀,冰浴30min;
3.然后在水浴锅中42℃热激90s,再次冰浴5min;
4.向上述体系中添加1mL含0.3M/mL DAP的LB培养基,37℃,150rpm,培养1小时;
5.取200uL培养液涂布于LB平板(含15ug/mL庆大霉素)上,30℃培养12小时;
6.挑取单菌落进行PCR验证,验证正确的WM3064与希瓦氏菌MR-1进行接合转移。
(3)将步骤(2)获得重组菌株在LB(含15ug/mL的庆大霉素)平板上培养,挑单菌落进行PCR验证,通过抗性筛选以及菌落PCR验证,获得自杀质粒整合到MR-1基因组中的重组菌株。其中菌落PCR所用引物为1942-LF(在MR-1基因组上)和F primer(在自杀质粒pHG1.0上)。引物F primer的核苷酸序列如SEQ ID NO.14所示;
(4)将步骤(3)验证正确的菌株在LB(含15ug/mL的庆大霉素)液体培养基中过夜培养,然后以1%的比例转接到无抗LB培养基中培养至OD值为0.4左右,取200uL涂布于不含NaCl,含有质量浓度10%蔗糖的LB平板上,30℃培养12小时。然后挑取单菌落进行PCR验证,并且进行测序验证;通过蔗糖负筛选和菌落PCR验证,获得SO_1942基因敲除型希瓦氏菌Δ1942。验证正确的重组菌株保存于-80℃冰箱,用于后续实验。
实施例2:一种产电重组希瓦氏菌株Δ1942和野生型希瓦氏菌MR-1MFC产电
1、菌株活化
将一种产电重组希瓦氏菌株Δ1942和野生型希瓦氏菌MR-1从-80℃冰箱取出,在LB培养基里30℃,200rpm,分别过夜培养。过夜培养液按1%的比例分别转接入新的LB培养基里30℃,200rpm,培养10小时,测OD 600,计算体积(MFC中OD 600=0.5),5000rpm离心10分钟,用阳极液重悬后,加入MFC阳极室中。
2、MFC产电
实验装置采用双室MFC,110mL阳极室(包含菌体和阳极液共110mL)和110mL阴极室,阳极碳布电极大小为1cm×1cm,阴极碳布电极大小为2.5cm×3cm,双室之间用质子交换膜隔开,质子交换膜用之前用1M盐酸水溶液过夜浸泡,并用无菌的蒸馏水冲洗三次。
阳极液包含6g/L磷酸氢二钠、3g/L磷酸二氢钾、0.5g/L氯化钠、1g/L氯化铵、1mM硫酸镁、0.1mM氯化钙、20mM乳酸钠、5%LB培养基,余量是水。阴极液包含50mM铁氰化钾、50mM磷酸氢二钾和50mM磷酸二氢钾,余量是水。MFC放在30℃培养箱中,阴阳两极连接2KΩ的外电阻。
3、电化学效果分析
循环伏安法(CV)以氯化银为参比电极,用多通道电化学工作站CHI1000C扫描,扫速为1mV/s。线性扫描伏安法(LSV)从-0.87V扫到-0.1V,扫速为0.1mV/s,仪器为多通道电化学工作站CHI1000C。
4、结果
由图2可以看出,产电重组希瓦氏菌Δ1942MFC产电具备较佳的产电性能,最高输出电压为106.4mV,相对于原始菌株野生型希瓦氏菌MR-1提高了22%;
利用生物电化学分析可以进一步研究MFC中胞外电子传递效率,图3所示是以扫速为0.1mV/s的线性扫描伏安图(LSV)即极化曲线,从图上可以看出,利用产电重组希瓦氏菌Δ1942进行MFC发电的最大电流密度约为357mA/m2,最大功率密度为118.4mW/m2,相对于原始菌株野生型希瓦氏菌MR-1均得到大幅提升。
表1:本发明所涉及引物及其序列
Figure BDA0002220158270000041
序列表
<110> 天津大学前沿技术研究院
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ggaggactcg aacgggaaaa ttcgtttaag tttactcgat acccagcgtt cattacgcta 300
tatgcagcgg tactaccgcg gtcaattgtc tgatgagcat ttaaaagact tacgtgagat 360
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aacatgtcag catagtaaga gtagaaaata gccaaagcat cgagcatata tggattttat 420
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cagtattaat attcaaaaat atcaaaagaa taaaggtgga tatccccact ggcattcgga 840
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cttaaaagtg gattacctct ccgacttgat cgaggacgtg tataccgtac ttgaaaatgt 180
tggcgagcag gttttcgaca gcgaagaact cgatgatgtg ttcaagctga ttacgctgca 240
ggaggactcg aacgggaaaa ttcgtttaag tttactcgat acccagcgtt cattacgcta 300
tatgcagcgg tactaccgcg gtcaattgtc tgatgagcat ttaaaagact tacgtgagat 360
gctctcggat atcgagtctt taatgcctca cagccagttt attttcgaca agttaaactt 420
cttgctggac gctgcgatgg gtttcagtgg attgcagcag aataagatca tcaaaatctt 480
ctcggttgcg gccgtagtct ttcttccgcc gacactgatt gcgagtagtt acgggatgaa 540
ctttaacggt atgcctgagt tgcaatggca atatggttat cctatggcga ttttaatgat 600
gctcgcgagt gccgcgggaa cctatttctt ctttaaacgt aaacactggc tttaattaag 660
tgcctgattt aaatagaaag taaaaagccg gagtctctcc tgctttttac tgatgtttta 720
cttgcggcta tcacccccaa agtaataact gacacgttcc cgtgggttga ggtattcgtg 780
tgcttcagtg gctaacaccc aggcaacggg taaacgcaca aaattcccta cctgtaattg 840
atgaactgag actttacagc tttttttcat atttttgtta tcgcgaagct aatgaagtta 900
ttttatcccc agacaacctg aagattcaga gatcagcggg agtttaacgc actttaggca 960
aagcggctat ttgcagacct catgggctga gttaaaaata accaatccaa cgtatagtgc 1020
gttaccacgt gttaacattt actgccggta gagagtgact aaggcgctct acttccgttt 1080
tgcatcaatt caaaaggtgg tcggcattct gttattgatg cagctttaca attacttaac 1140
taacatgtca gcatagtaag agtagaaaat agccaaagca tcgagcatat atggatttta 1200
tcgaagtata ccctaatgca atacctgatg atctatgtga tcgtctcatt cttgcgtttg 1260
aaaagcactc tggcgtcgtt gatgggcaaa ctggcaatgg tgttgacctt gaaaaaaaga 1320
tcagtcgaga tcttacatta gataatttca ccgatttaca gcctcttaaa aatgaattgt 1380
tatcttacac tcttaaggga acggcagact attttagcca atatgcaatg gcgctaatgg 1440
gagcagtggc ggtttctgtc agtgatgagc aaggtcaagc ggttacctta acaccaagca 1500
attttgagcg tttaggtaag cctagagcgg aggcattagt caaatattta taccgtagtg 1560
gcagtattaa tattcaaaaa tatcaaaaga ataaaggtgg atatccccac tggcattcgg 1620
agcaattccc ccaactaagc cacaatgaag ccagcctgct tttttgtaca aacttgtccc 1680
c 1681
<210> 4
<211> 20
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 4
gatgatgcag agcgagaatg 20
<210> 5
<211> 20
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 5
taccatccct gcctgaccat 20
<210> 6
<211> 50
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 6
ggggacaagt ttgtacaaaa aagcaggcta tgtcggactt atccgcctct 50
<210> 7
<211> 38
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 7
ggtgttagcc actgaagcac acgaatacct caacccac 38
<210> 8
<211> 51
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 8
ggggacaagt ttgtacaaaa aagcaggctg gcttcattgt ggcttagttg g 51
<210> 9
<211> 36
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 9
gcttcagtgg ctaacaccca ggcaacgggt aaacgc 36
<210> 10
<211> 29
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 10
ggggacaagt ttgtacaaaa aagcaggct 29
<210> 11
<211> 29
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 11
ggggaccact ttgtacaaga aagctgggt 29
<210> 12
<211> 18
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 12
gcttcagtgg ctaacacc 18
<210> 13
<211> 10381
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 13
atataaatat caatatatta aattagattt tgcataaaaa acagactaca taatactgta 60
aaacacaaca tatccagtca ctatgaatca actacttaga tggtattagt gacctgtagt 120
cgactaagtt ggcagcatca cccgacgcac tttgcgccga ataaatacct gtgacggaag 180
atcacttcgc agaataaata aatcctggtg tccctgttga taccgggaag ccctgggcca 240
acttttggcg aaaatgagac gttgatcggc acgtaagagg ttccaacttt caccataatg 300
aaataagatc actaccgggc gtattttttg agttatcgag attttcagga gctaaggaag 360
ctaaaatgga gaaaaaaatc actggatata ccaccgttga tatatcccaa tggcatcgta 420
aagaacattt tgaggcattt cagtcagttg ctcaatgtac ctataaccag accgttcagc 480
tggatattac ggccttttta aagaccgtaa agaaaaataa gcacaagttt tatccggcct 540
ttattcacat tcttgcccgc ctgatgaatg ctcatccgga attccgtatg gcaatgaaag 600
acggtgagct ggtgatatgg gatagtgttc acccttgtta caccgttttc catgagcaaa 660
ctgaaacgtt ttcatcgctc tggagtgaat accacgacga tttccggcag tttctacaca 720
tatattcgca agatgtggcg tgttacggtg aaaacctggc ctatttccct aaagggttta 780
ttgagaatat gtttttcgtc tcagccaatc cctgggtgag tttcaccagt tttgatttaa 840
acgtggccaa tatggacaac ttcttcgccc ccgttttcac catgggcaaa tattatacgc 900
aaggcgacaa ggtgctgatg ccgctggcga ttcaggttca tcatgccgtc tgtgatggct 960
tccatgtcgg cagaatgctt aatgaattac aacagtactg cgatgagtgg cagggcgggg 1020
cgtaaacgcc gcgtggatcc ggcttactaa aagccagata acagtatgcg tatttgcgcg 1080
ctgatttttg cggtataaga atatatactg atatgtatac ccgaagtatg tcaaaaagag 1140
gtatgctatg aagcagcgta ttacagtgac agttgacagc gacagctatc agttgctcaa 1200
ggcatatatg atgtcaatat ctccggtctg gtaagcacaa ccatgcagaa tgaagcccgt 1260
cgtctgcgtg ccgaacgctg gaaagcggaa aatcaggaag ggatggctga ggtcgcccgg 1320
tttattgaaa tgaacggctc ttttgctgac gagaacaggg gctggtgaaa tgcagtttaa 1380
ggtttacacc tataaaagag agagccgtta tcgtctgttt gtggatgtac agagtgatat 1440
tattgacacg cccgggcgac ggatggtgat ccccctggcc agtgcacgtc tgctgtcaga 1500
taaagtctcc cgtgaacttt acccggtggt gcatatcggg gatgaaagct ggcgcatgat 1560
gaccaccgat atggccagtg tgccggtctc cgttatcggg gaagaagtgg ctgatctcag 1620
ccaccgcgaa aatgacatca aaaacgccat taacctgatg ttctggggaa tataaatgtc 1680
aggctccctt atacacagcc agtctgcagg tcgatacagt agaaattaca gaaactttat 1740
cacgtttagt aagtatagag gctgaaaatc cagatgaagc cgaacgactt gtaagagaaa 1800
agtataagag ttgtgaaatt gttcttgatg cagatgattt tcaggactat gacactagcg 1860
tatatgaata ggtagatgtt tttattttgt cacacaaaaa agaggctcgc acctcttttt 1920
cttatttctt tttatgattt aatacggcat tgaggacaat agcgagtagg ctggatacga 1980
cgattccgtt tgagaagaac atttggaagg ctgtcggtcg actaagttgg cagcatcacc 2040
cgaagaacat ttggaaggct gtcggtcgac tacaggtcac taataccatc taagtagttg 2100
attcatagtg actggatatg ttgtgtttta cagtattatg tagtctgttt tttatgcaaa 2160
atctaattta atatattgat atttatatca ttttacgttt ctcgttcagc ttttttgtac 2220
aaagttggca ttataaaaaa gcattgctca tcaatttgtt gcaacgaaca ggtcactatc 2280
agtcaaaata aaatcattat ttggggcccg agatccatgc tagcgtgagc tcgatatcgc 2340
atgcggtacc tctagaagaa gcttgggatc cgtcgacgcg tcgatccggt gattgattga 2400
gcaagctagc tttatgcttg taaaccgttt tgtgaaaaaa tttttaaaat aaaaaagggg 2460
acctctaggg tccccaatta attagtaata taatctatta aaggtcattc aaaaggtcat 2520
ccaccggatc agcttagtaa agccctcgct agattttaat gcggatgttg cgattacttc 2580
gccaactatt gcgataacaa gaaaaagcca gcctttcatg atatatctcc caatttgtgt 2640
agggcttatt atgcacgctt aaaaataata aaagcagact tgacctgata gtttggctgt 2700
gagcaattat gtgcttagtg catctaacgc ttgagttaag ccgcgccgcg aagcggcgtc 2760
ggcttgaacg aattgttaga cattatttgc cgactacctt ggtgatctcg cctttcacgt 2820
agtggacaaa ttcttccaac tgatctgcgc gtcgaattaa ttctcgaatt gacataagcc 2880
tgttcggttc gtaaactgta atgcaagtag cgtatgcgct cacgcaactg gtccagaacc 2940
ttgaccgaac gcagcggtgg taacggcgca gtggcggttt tcatggcttg ttatgactgt 3000
ttttttgtac agtctatgcc tcgggcatcc aagcagcaag cgcgttacgc cgtgggtcga 3060
tgtttgatgt tatggagcag caacgatgtt acgcagcagc aacgatgtta cgcagcaggg 3120
cagtcgccct aaaacaaagt taggtggctc aagtatgggc atcattcgca catgtaggct 3180
cggccctgac caagtcaaat ccatgcgggc tgctcttgat cttttcggtc gtgagttcgg 3240
agacgtagcc acctactccc aacatcagcc ggactccgat tacctcggga acttgctccg 3300
tagtaagaca ttcatcgcgc ttgctgcctt cgaccaagaa gcggttgttg gcgctctcgc 3360
ggcttacgtt ctgcccaagt ttgagcagcc gcgtagtgag atctatatct atgatctcgc 3420
agtctccggc gagcaccgga ggcagggcat tgccaccgcg ctcatcaatc tcctcaagca 3480
tgaggccaac gcgcttggtg cttatgtgat ctacgtgcaa gcagattaca gtgacgatcc 3540
cgcagtggct ctctatacaa agttgggcat acgggaagaa gtgatgcact ttgatatcga 3600
cccaagtacc gccacctaac aattcgttca agccgagatc ggcttcccgg ccaattcgac 3660
gcgcggatca gtgagggttt gcaactgcgg gtcaaggatc tggatttcga tcacggcacg 3720
atcatcgtgc gggagggcaa gggctccaag gatcgggcct tgatgttacc cgagagcttg 3780
gcacccagcc tgcgcgagca ggggaattga tccggtggat gaccttttga atgaccttta 3840
atagattata ttactaatta attggggacc ctagaggtcc ccttttttat tttaaaaatt 3900
ttttcacaaa acggtttaca agcataaagc tagcttgctc aatcaatcac cggatcctct 3960
agagtcgacg cgtcgactct agaggatcga tcctttttaa cccatcacat atacctgccg 4020
ttcactatta tttagtgaaa tgagatatta tgatattttc tgaattgtga ttaaaaaggc 4080
aactttatgc ccatgcaaca gaaactataa aaaatacaga gaatgaaaag aaacagatag 4140
attttttagt tctttaggcc cgtagtctgc aaatcctttt atgattttct atcaaacaaa 4200
agaggaaaat agaccagttg caatccaaac gagagtctaa tagaatgagg tcgaaaagta 4260
aatcgcgcgg gtttgttact gataaagcag gcaagaccta aaatgtgtaa agggcaaagt 4320
gtatactttg gcgtcacccc ttacatattt taggtctttt tttattgtgc gtaactaact 4380
tgccatcttc aaacaggagg gctggaagaa gcagaccgct aacacagtac ataaaaaagg 4440
agacatgaac gatgaacatc aaaaagtttg caaaacaagc aacagtatta acctttacta 4500
ccgcactgct ggcaggaggc gcaactcaag cgtttgcgaa agaaacgaac caaaagccat 4560
ataaggaaac atacggcatt tcccatatta cacgccatga tatgctgcaa atccctgaac 4620
agcaaaaaaa tgaaaaatat caagttcctg aattcgattc gtccacaatt aaaaatatct 4680
cttctgcaaa aggcctggac gtttgggaca gctggccatt acaaaacgct gacggcactg 4740
tcgcaaacta tcacggctac cacatcgtct ttgcattagc cggagatcct aaaaatgcgg 4800
atgacacatc gatttacatg ttctatcaaa aagtcggcga aacttctatt gacagctgga 4860
aaaacgctgg ccgcgtcttt aaagacagcg acaaattcga tgcaaatgat tctatcctaa 4920
aagaccaaac acaagaatgg tcaggttcag ccacatttac atctgacgga aaaatccgtt 4980
tattctacac tgatttctcc ggtaaacatt acggcaaaca aacactgaca actgcacaag 5040
ttaacgtatc agcatcagac agctctttga acatcaacgg tgtagaggat tataaatcaa 5100
tctttgacgg tgacggaaaa acgtatcaaa atgtacagca gttcatcgat gaaggcaact 5160
acagctcagg cgacaaccat acgctgagag atcctcacta cgtagaagat aaaggccaca 5220
aatacttagt atttgaagca aacactggaa ctgaagatgg ctaccaaggc gaagaatctt 5280
tatttaacaa agcatactat ggcaaaagca catcattctt ccgtcaagaa agtcaaaaac 5340
ttctgcaaag cgataaaaaa cgcacggctg agttagcaaa cggcgctctc ggtatgattg 5400
agctaaacga tgattacaca ctgaaaaaag tgatgaaacc gctgattgca tctaacacag 5460
taacagatga aattgaacgc gcgaacgtct ttaaaatgaa cggcaaatgg tacctgttca 5520
ctgactcccg cggatcaaaa atgacgattg acggcattac gtctaacgat atttacatgc 5580
ttggttatgt ttctaattct ttaactggcc catacaagcc gctgaacaaa actggccttg 5640
tgttaaaaat ggatcttgat cctaacgatg taacctttac ttactcacac ttcgctgtac 5700
ctcaagcgaa aggaaacaat gtcgtgatta caagctatat gacaaacaga ggattctacg 5760
cagacaaaca atcaacgttt gcgccaagct tcctgctgaa catcaaaggc aagaaaacat 5820
ctgttgtcaa agacagcatc cttgaacaag gacaattaac agttaacaaa taaaaacgca 5880
aaagaaaatg ccgatatcct attggcattt tcttttattt cttatcaaca taaaggtgaa 5940
tcccatatga actatataaa agcaggcaaa tggctaaccg tattcctaac cttttggtaa 6000
tgactccaac ttattgatag tgttttatgt tcagataatg cccgatgact ttgtcatgca 6060
gctccaccga ttttgagaac gacagcgact tccgtcccag ccgtgccagg tgctgcctca 6120
gattcacgtt atgccgctca attcgctgcg tatatcgctt gctgattacg tgcagctttc 6180
ccttcaggcg ggattcatac agcggccagc catccgtcat ccatatcacc acgtcaaagg 6240
gtgacagcag gctcataaga cgccccagcg tcgccatagt gcgttcaccg aatacgtgcg 6300
caacaaccgt cttccggaga ctgtcatacg cgtaaaacag ccagcgctgg cgcgatttag 6360
ccccgacata gccccactgt tcgtccattt ccgcgcagac gatgacgtca ctgcccggct 6420
gtatgcgcga ggttaccgac tgcggcctga gttttttaag tgacgtaaaa tcgtgttgag 6480
gccaacgccc ataatgcggg ctgttgcccg gcatccaacg ccattcatgg ccatatcaat 6540
gattttctgg tgcgtaccgg gttgagaagc ggtgtaagtg aactgcaggt ggcacttttc 6600
ggggaaatgt gcgcggaacc cctatttgtt tatttttcta aatacattca aatatgtatc 6660
cgctcatgag acaataaccc tgataaatgc ttcaataata ttgaaaaagg aagagtatga 6720
gtattcaaca tttccgtgtc gcccttattc ccttttttgc ggcattttgc cttcctgttt 6780
ttgctcaccc agaaacgctg gtgaaagtaa aagatgctga agatcagttg ggtgcacgag 6840
tgggttacat cgaactggat ctcaacagcg gtaagatcct tgagagtttt cgccccgaag 6900
aacgttttcc aatgatgagc acttttaaag ttctgctatg tggcgcggta ttatcccgtg 6960
ttgacgccgg gcaagagcaa ctcggtcgcc gcatacacta ttctcagaat gacttggttg 7020
agtactcacc agtcacagaa aagcatctta cggatggcat gacagtaaga gaattatgca 7080
gtgctgccat aaccatgagt gataacactg cggccaactt acttctgaca acgatcggag 7140
gaccgaagga gctaaccgct tttttgcaca acatggggga tcatgtaact cgccttgatc 7200
gttgggaacc ggagctgaat gaagccatac caaacgacga gcgtgacacc acgatgcctg 7260
cagcaatggc aacaacgttg cgcaaactat taactggcga actacttact ctagcttccc 7320
ggcaacaatt aatagactgg atggaggcgg ataaagttgc aggaccactt ctgcgctcgg 7380
cccttccggc tggctggttt attgctgata aatctggagc cggtgagcgt gggtctcgcg 7440
gtatcattgc agcactgggg ccagatggta agccctcccg tatcgtagtt atctacacga 7500
cggggagtca ggcaactatg gatgaacgaa atagacagat cgctgagata ggtgcctcac 7560
tgattaagca ttggtaactg tcagaccaag tttactcata tatactttag attgatttat 7620
ggtgcactct cagtacaatc tgctctgatg ccgcatagtt aagccagtat acactccgct 7680
atcgctacgt gactgggtca tggctgcgcc ccgacacccg ccaacacccg ctgacgcgcc 7740
ctgacgggct tgtctgctcc cggcatccgc ttacagacaa gctgtgaccg tctccgggag 7800
ctgcatgtgt cagaggtttt caccgtcatc accgaaacgc gcgaggcagc aaggagatgg 7860
cgcccaacag tcccccggcc acggggcctg ccaccatacc cacgccgaaa caagcgctca 7920
tgagcccgaa gtggcgagcc cgatcttccc catcggtgat gtcggcgata taggcgccag 7980
caaccgcacc tgtggcgccg gtgatgccgg ccacgatgcg tccggcgtag aggatccttt 8040
ttgtccggtg ttgggttgaa ggtgaagccg gtcggggccg cagcgggggc cggcttttca 8100
gccttgcccc cctgcttcgg ccgccgtggc tccggcgtct tgggtgccgg cgcgggttcc 8160
gcagccttgg cctgcggtgc gggcacatcg gcgggcttgg ccttgatgtg ccgcctggcg 8220
tgcgagcgga acgtctcgta ggagaacttg accttccccg tttcccgcat gtgctcccaa 8280
atggtgacga gcgcatagcc ggacgctaac gccgcctcga catccgccct caccgccagg 8340
aacgcaaccg cagcctcatc acgccggcgc ttcttggccg cgcgggattc aacccactcg 8400
gccagctcgt cggtgtagct ctttggcatc gtctctcgcc tgtcccctca gttcagtaat 8460
ttcctgcatt tgcctgtttc cagtcggtag atattccaca aaacagcagg gaagcagcgc 8520
ttttccgctg cataaccctg cttcggggtc attatagcga ttttttcggt atatccatcc 8580
tttttcgcac gatatacagg attttgccaa agggttcgtg tagactttcc ttggtgtatc 8640
caacggcgtc agccgggcag gataggtgaa gtaggcccac ccgcgagcgg gtgttccttc 8700
ttcactgtcc cttattcgca cctggcggtg ctcaacggga atcctgctct gcgaggctgg 8760
ccggctaccg ccggcgtaac agatgagggc aagcggatgg ctgatgaaac caagccaacc 8820
aggaagggca gcccacctat caaggtgtac tgccttccag acgaacgaag agcgattgag 8880
gaaaaggcgg cggcggccgg catgagcctg tcggcctacc tgctggccgt cggccagggc 8940
tacaaaatca cgggcgtcgt ggactatgag cacgtccgcg agctggcccg catcaatggc 9000
gacctgggcc gcctgggcgg cctgctgaaa ctctggctca ccgacgaccc gcgcacggcg 9060
cggttcggtg atgccacgat cctcgccctg ctggcgaaga tcgaagagaa gcaggacgag 9120
cttggcaagg tcatgatggg cgtggtccgc ccgagggcag agccatgact tttttagccg 9180
ctaaaacggc cggggggtgc gcgtgattgc caagcacgtc cccatgcgct ccatcaagaa 9240
gagcgacttc gcggagctgg tgaagtacat caccgacgag caaggcaaga ccgagcgcct 9300
gggtcacgtg cgcgtcacga actgcgaggc aaacaccctg cccgctgtca tggccgaggt 9360
gatggcgacc cagcacggca acacccgttc cgaggccgac aagacctatc acctgctggt 9420
tagcttccgc gcgggagaga agcccgacgc ggagacgttg cgcgcgattg aggaccgcat 9480
ctgcgctggg cttggcttcg ccgagcatca gcgcgtcagt gccgtgcatc acgacaccga 9540
caacctgcac atccatatcg ccatcaacaa gattcacccg acccgaaaca ccatccatga 9600
gccgtatcgg gcctaccgcg ccctcgctga cctctgcgcg acgctcgaac gggactacgg 9660
gcttgagcgt gacaatcacg aaacgcggca gcgcgtttcc gagaaccgcg cgaacgacat 9720
ggagcggcac gcgggcgtgg aaagcctggt cggctggatc cggccacgat gcgtccggcg 9780
tagaggatct gaagatcagc agttcaacct gttgatagta cgtactaagc tctcatgttt 9840
cacgtactaa gctctcatgt ttaacgtact aagctctcat gtttaacgaa ctaaaccctc 9900
atggctaacg tactaagctc tcatggctaa cgtactaagc tctcatgttt cacgtactaa 9960
gctctcatgt ttgaacaata aaattaatat aaatcagcaa cttaaatagc ctctaaggtt 10020
ttaagtttta taagaaaaaa aagaatatat aaggctttta aagcttttaa ggtttaacgg 10080
ttgtggacaa caagccaggg atgtaacgca ctgagaagcc cttagagcct ctcaaagcaa 10140
ttttgagtga cacaggaaca cttaacggct gacatgggaa ttccacatgt ggaattccac 10200
atgtggaatt gtgagcggat aacaatttgt ggaattcccg ggagagctcg agctgcagct 10260
ggatggcaaa taatgatttt attttgactg atagtgacct gttcgttgca acaaattgat 10320
aagcaatgct ttcttataat gccaactttg tacaagaaag ctgaacgaga aacgtaaaat 10380
g 10381
<210> 14
<211> 23
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 14
agggatgtaa cgcactgaga agc 23
<210> 15
<211> 1263
<212> DNA
<213> 希瓦氏菌(Shewanella oneidensis)
<400> 15
atgaaaaaaa gctgtaaagt ctcagttcat caattacagg tagggaattt tgtgcgttta 60
cccgttgcct ggaaagatca tcctttttta ttcagtagct ttcacattaa acaggctgcg 120
caaattgaat taattaaaaa tcttggtatt gaacacgtta tcgtcgattt agagcgcagt 180
gaaatcgccc ccttaaatcc tgaagcggtt aaccccataa cactgcctcc cagccctgaa 240
ctccatgatc ttaaaaataa tatggatatc tacaaggctg aacaaattga agtacaaaag 300
aaacttcgcc gagatattca taaaactgag caaaatttca ctcgctcagt cgccatgatg 360
cgcagtctga tctctaagct acgcaatcgg ccattgaatg ccgttgatga tgccaaggtg 420
ttagttcaaa gtatggtgga acaactctta acctcagaca atctagtgct gcatttaatg 480
agtgatgcca agcaggatga aagcatttat tatcattcat taaatgtctc catcctctcc 540
atgctgattg ccaaagagat ggaatgggac cgtagtgaaa tcgaattagt cggcttaagc 600
gctctgtttc atgatgtggg aaaactcaaa gtacccccgc aaattttgaa aaaaaccaca 660
ccttggtctg cacccgagct taattttatt aagcagcatc ctctacttgg gattgattta 720
ctcaagctgg cagacaattt ccctgaagcc gcactccctg cgatcattaa ccaccatgag 780
tttcttgatg gcagtggtta tcccaaaggg ttaaaggagg cggaccttga taagatatcc 840
caattattag cggtcgtgaa tgaatatgac tccctttgtt atcccagtaa ccagggtaaa 900
gcacgtatgc cctacgccgc attaggacat ttgtataagc aatataaaac gaaattaaat 960
caggaatata ttggcaaaat gatcaaaatg ttgggtattt atccgccggg aagtgtggtg 1020
gaattatcta gcggccaata tgccatggtg atgtcggtta acttgcaaaa actactctgc 1080
cctaaaatcc tcgtttacga tgcattagtg cctaaagatc aagcgcctat cgtcgatctt 1140
gaagtcgaag ggatcagtat tgtgcgctgc ctccccgctg cagctttacc tgaaaaagta 1200
cacgaatacc tcaacccacg ggaacgtgtc agttattact ttgggggtga tagccgcaag 1260
taa 1263

Claims (3)

1.一种产电重组希瓦氏菌株的构建方法,其特征是包括如下步骤:敲除野生型希瓦氏菌Shewanella oneidensis MR-1的目标基因SO_1942,得到产电重组希瓦氏菌株Δ1942,所述基因SO_1942的核苷酸序列如SEQ ID NO 15所示。
2.权利要求1的方法构建的一种产电重组希瓦氏菌株Δ1942。
3.权利要求2的一种产电重组希瓦氏菌株Δ1942产电的用途。
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