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公开(公告)号:US08623623B2
公开(公告)日:2014-01-07
申请号:US13161749
申请日:2011-06-16
申请人: Robel Y. Kahsay , Min Qi , Luan Tao , Paul V. Viitanen , Jianjun Yang
发明人: Robel Y. Kahsay , Min Qi , Luan Tao , Paul V. Viitanen , Jianjun Yang
IPC分类号: C12N9/00
摘要: Zymomonas expressing xylose isomerase from A. missouriensis was found to have improved xylose utilization, growth, and ethanol production when grown in media containing xylose. Xylose isomerases related to that of A. missouriensis were identified structurally through molecular phylogenetic and Profile Hidden Markov Model analyses, providing xylose isomerases that may be used to improve xylose utilization.
摘要翻译: 发现来自A. missouriensis的表达木糖异构酶的发酵单胞菌在含有木糖的培养基中生长时具有改善的木糖利用率,生长和乙醇生产。 通过分子系统发育和轮廓隐马尔可夫模型分析,结构地鉴定了与密螺旋体相关的木糖异构酶,提供可用于改善木糖利用的木糖异构酶。
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公开(公告)号:US07998722B2
公开(公告)日:2011-08-16
申请号:US12410501
申请日:2009-03-25
申请人: Paul V. Viitanen , Luan Tao , Yuying Zhang , Perry G. Caimi , Carol M. McCutchen , Laura McCole , Min Zhang , Yat-Chen Chou , Mary Ann Franden
发明人: Paul V. Viitanen , Luan Tao , Yuying Zhang , Perry G. Caimi , Carol M. McCutchen , Laura McCole , Min Zhang , Yat-Chen Chou , Mary Ann Franden
CPC分类号: C12N9/92 , C12N9/0008 , C12N9/1022 , C12N9/1205 , C12P7/065 , Y02E50/17
摘要: Strains of Zymomonas were engineered by introducing a chimeric xylose isomerase gene that contains a mutant promoter of the Z. mobilis glyceraldehyde-3-phosphate dehydrogenase gene. The promoter directs increased expression of xylose isomerase, and when the strain is in addition engineered for expression of xylulokinase, transaldolase and transketolase, improved utilization of xylose is obtained.
摘要翻译: 通过引入含有运动发酵单胞菌甘油醛-3-磷酸脱氢酶基因的突变启动子的嵌合木糖异构酶基因工程化发酵单胞菌菌株。 启动子指导木糖异构酶的增加表达,并且当该菌株另外被设计用于表达木酮糖激酶,转醛醇酶和转酮酶时,获得木糖的改善的利用。
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公开(公告)号:US07098000B2
公开(公告)日:2006-08-29
申请号:US10860291
申请日:2004-06-03
申请人: Qiong Cheng , Luan Tao
发明人: Qiong Cheng , Luan Tao
CPC分类号: C12N9/0083 , C12N9/1085 , C12N15/52 , C12P23/00
摘要: The present invention provides methods to engineer microorganisms for the production of C30-aldehyde carotenoids. Specifically, various combinations of crtM, sqs, crtN and crtN2 genes from Staphylococcus aureus and Methylomonas sp. 16a can be co-expressed in transformant hosts, leading to the production of diaponeurosporene monoaldehyde, diapocarotene monoaldehyde, and/or diapocarotene dialdehyde. In a preferred embodiment, the genetically engineered pathway is introduced into a strain of Escherichia coli that has been engineered for the expression of carotenoids, and the C30-carotenoid product is diapocarotene dialdehyde.
摘要翻译: 本发明提供了工程微生物用于生产C 30 N-醛类胡萝卜素的方法。 具体来说,来自金黄色葡萄球菌和Methylomonas sp。的crtM,sqs,crtN和crtN2基因的各种组合。 16a可以在转化体宿主中共表达,导致产生二头孢噻吩一醛,二卡非罗芬单醛和/或二卡必康二醛。 在优选的实施方案中,将经遗传工程改造的途径引入已被改造用于表达类胡萝卜素的大肠杆菌菌株中,并且C 30-30-类胡萝卜素产物是二卡必康二醛。
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公开(公告)号:US07064196B2
公开(公告)日:2006-06-20
申请号:US10808979
申请日:2004-03-25
申请人: Qiong Cheng , Luan Tao
发明人: Qiong Cheng , Luan Tao
CPC分类号: C12N9/001 , C12N9/00 , C12N9/0004 , C12N9/0071 , C12N9/0083 , C12N9/1051 , C12N9/1085 , C12N9/90 , C12N15/52 , C12P23/00
摘要: Genes have been isolated from strain DC260, a member of the Enterobacteriaceae family, encoding geranylgeranyl pyrophosphate (GGPP) synthetase (CrtE), phytoene synthase (CrtB), phytoene desaturase (CrtI), lycopene cyclase (CrtY), β-carotene hydroxylase (CrtZ), and zeaxanthin glucosyl transferase (CrtX) activity. The genes and their products are useful for the conversion of farnesyl pyrophosphate to carotenoids. Vectors containing those DNA segments, host cells containing the vectors and methods for producing those enzymes by recombinant DNA technology in transformed host organisms are disclosed.
摘要翻译: 基因已经从肠杆菌科家族的成员DC260中分离出来,编码香叶基香叶基焦磷酸(GGPP)合成酶(CrtE),八氢番茄红素合酶(CrtB),八氢番茄红素去饱和酶(CrtI),番茄红素环化酶(CrtY),β-胡萝卜素羟化酶 )和玉米黄质葡萄糖基转移酶(CrtX)活性。 这些基因及其产物可用于将焦磷酸法呢基转化成类胡萝卜素。 公开了含有这些DNA片段的载体,含有载体的宿主细胞和通过重组DNA技术在转化的宿主生物体中产生这些酶的方法。
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公开(公告)号:US06929928B2
公开(公告)日:2005-08-16
申请号:US10808807
申请日:2004-03-24
申请人: Qiong Cheng , Natalia Sedkova , Luan Tao
发明人: Qiong Cheng , Natalia Sedkova , Luan Tao
IPC分类号: C07H21/04 , C12N20060101 , C12N1/14 , C12N1/20 , C12N1/21 , C12N9/00 , C12N9/02 , C12N9/10 , C12N9/90 , C12N15/52 , C12N15/82 , C12P5/00 , C12P5/02 , C12P7/26 , C12P23/00
CPC分类号: C12N9/00 , C12N9/0004 , C12N9/001 , C12N9/0083 , C12N9/1051 , C12N9/1085 , C12N9/90 , C12N15/52 , C12N15/825 , C12P23/00 , C12Y205/01029 , Y02E50/343
摘要: A unique carotenogenic biosynthetic gene cluster has been isolated from Panteoa agglomerans strain DC404, wherein the genetic organization of the cluster is crtE-idi-crtY-crtI-crtB-crtZ. The genes contained within this cluster encode geranylgeranyl pyrophosphate (GGPP) synthetase (CrtE), isopentenyl pyrophosphate isomerase (Idi), lycopene cyclase (CrtY), phytoene desaturase (CrtI), phytoene synthase (CrtB), and β-carotene hydroxylase (CrtZ). The gene cluster, genes and their products are useful for the conversion of farnesyl pyrophosphate to carotenoids. Vectors containing those DNA segments, host cells containing the vectors and methods for producing those enzymes by recombinant DNA technology in transformed host organisms are disclosed.
摘要翻译: 已经从成团Panthena菌株DC404中分离出独特的致病基因生物合成基因簇,其中簇的遗传组织为crtE-idi-crtY-crtI-crtB-crtZ。 包含在该簇内的基因编码er牛儿基焦磷酸(GGPP)合成酶(CrtE),异戊烯焦磷酸异构酶(Idi),番茄红素环化酶(CrtY),八氢番茄红素去饱和酶(CrtI),八氢番茄红素合酶(CrtB)和β-胡萝卜素羟化酶(CrtZ) 。 基因簇,基因及其产物可用于将焦磷酸法呢基转化成类胡萝卜素。 公开了含有这些DNA片段的载体,含有载体的宿主细胞和通过重组DNA技术在转化的宿主生物体中产生这些酶的方法。
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公开(公告)号:US20110318801A1
公开(公告)日:2011-12-29
申请号:US13161749
申请日:2011-06-16
申请人: ROBEL Y. KAHSAY , Min Qi , Luan Tao , Paul V. Viitanen , Jianjun Yang
发明人: ROBEL Y. KAHSAY , Min Qi , Luan Tao , Paul V. Viitanen , Jianjun Yang
摘要: Zymomonas expressing xylose isomerase from A. missouriensis was found to have improved xylose utilization, growth, and ethanol production when grown in media containing xylose. Xylose isomerases related to that of A. missouriensis were identified structurally through molecular phylogenetic and Profile Hidden Markov Model analyses, providing xylose isomerases that may be used to improve xylose utilization.
摘要翻译: 发现来自A. missouriensis的表达木糖异构酶的发酵单胞菌在含有木糖的培养基中生长时具有改善的木糖利用率,生长和乙醇生产。 通过分子系统发育和轮廓隐马尔可夫模型分析,结构地鉴定了与密螺旋体相关的木糖异构酶,提供可用于改善木糖利用的木糖异构酶。
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公开(公告)号:US20090246876A1
公开(公告)日:2009-10-01
申请号:US12410495
申请日:2009-03-25
申请人: PAUL V. VIITANEN , LUAN TAO , YUYING ZHANG , PERRY G. CAIMI , LAURA MCCOLE , MIN ZHANG , YAT-CHEN CHOU , CAROL M. MCCUTCHEN , MARY ANN FRANDEN
发明人: PAUL V. VIITANEN , LUAN TAO , YUYING ZHANG , PERRY G. CAIMI , LAURA MCCOLE , MIN ZHANG , YAT-CHEN CHOU , CAROL M. MCCUTCHEN , MARY ANN FRANDEN
CPC分类号: C12N15/74
摘要: Identified are mutants of the promoter of the Z. mobilis glyceraldehyde-3-phosphate dehydrogenase gene, which direct improved expression levels of operably linked heterologous nucleic acids. These are high expression promoters useful for expression of chimeric genes in Zymomonas, Zymobacter, and other related bacteria.
摘要翻译: 鉴定为运动发酵单胞菌甘油醛-3-磷酸脱氢酶基因的启动子的突变体,其直接改善可操作地连接的异源核酸的表达水平。 这些是用于在发酵单胞菌,酵母属和其他相关细菌中表达嵌合基因的高表达启动子。
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公开(公告)号:US07425625B2
公开(公告)日:2008-09-16
申请号:US11147915
申请日:2005-06-08
申请人: Xiao-Song Tang , Qiong Cheng , Luan Tao , Joanne Y. Shyr
发明人: Xiao-Song Tang , Qiong Cheng , Luan Tao , Joanne Y. Shyr
CPC分类号: C12P23/00 , C07H21/04 , C12N9/1022
摘要: Protein engineered CrtO ketolases isolated from Rhodococcus erythropolis AN12 are provided having increased carotenoid ketolase activity. Methods using the present CrtO ketolases are also provided for increasing ketocarotenoid production in suitable production hosts.
摘要翻译: 提供从红球菌红细胞生成素AN12分离的蛋白质工程化的CrtO酮醇酶具有增加的类胡萝卜酮酮醇酶活性。 还提供了使用本发明的CrtO酮糖酶的方法,用于在合适的生产主体中增加酮类胡萝卜素生产。
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公开(公告)号:US07393671B2
公开(公告)日:2008-07-01
申请号:US11393082
申请日:2006-03-30
申请人: Qiong Cheng , Luan Tao
发明人: Qiong Cheng , Luan Tao
IPC分类号: C12P23/00 , C12N5/10 , C12N1/21 , C12N15/00 , C12N5/14 , C12N1/12 , C12N1/11 , C12N1/13 , C12N1/15 , C12N1/19 , C07H21/00 , C12N9/02 , C12P21/00 , C07K14/00
CPC分类号: C12N9/0069 , C12P23/00
摘要: CrtW carotenoid ketolases are provided that are useful for the production of astaxanthin and other cyclic ketocarotenoids. The mutant ketolase genes of the present invention encode polypeptides characterized by an improvement in astaxanthin synthesis activity when converting cyclic hydroxylated carotenoid intermediates into astaxanthin. Expression of the mutant carotenoid ketolases in heterologous hosts enabled increased production of astaxanthin relative to the Sphingomonas melonis DC18 CrtW.
摘要翻译: 提供了可用于生产虾青素和其他环状酮类胡萝卜素的CrtW类胡萝卜素酮酶。 本发明的突变型酮糖酶基因编码多肽,其特征在于将环状羟基化类胡萝卜素中间体转化成虾青素时,虾青素合成活性得到改善。 突变型类胡萝卜素酮酶在异源宿主中的表达使得虾青素相对于甜菜根鞘节DC18 CrtW的产量增加。
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公开(公告)号:US07232665B2
公开(公告)日:2007-06-19
申请号:US10735008
申请日:2003-12-12
申请人: Qiong Cheng , Pierre E. Rouviere , Luan Tao
发明人: Qiong Cheng , Pierre E. Rouviere , Luan Tao
摘要: Mutations in genes having no direct relationship to the carotenoid biosynthetic pathway have been found to increase carbon flux through that pathway. Complete disruption in the deaD, mreC, and yfhE genes were effective. Additionally where genes of the lower carotenoid pathway reside on a plasmid having either a p15A or pMB1 replicon, mutations in the thrS, rspA, rpoC, yjeR, and rhoL were found effective.
摘要翻译: 已经发现与类胡萝卜素生物合成途径没有直接关系的基因中的突变增加通过该途径的碳通量。 deaD,mreC和yfhE基因的完全破坏是有效的。 此外,较低类胡萝卜素途径的基因存在于具有p15A或pMB1复制子的质粒上,发现thrS,rspA,rpoC,yjeR和rhoL中的突变是有效的。
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