Abstract:
:Identification of the enzyme(s) involved in complex biosynthetic pathways can be challenging. An alternative approach might be to deliberately diverge from the original natural enzyme source and use promiscuous enzymes from other organisms. In this paper, we have tested the ability of a series of human and animal cytochromes P450 involved in xenobiotic detoxification to generate derivatives of (+)-epi-α-bisabolol and attempt to produce the direct precursor of hernandulcin, a sweetener from Lippia dulcis for which the last enzymatic steps are unknown. Screening steps were implemented in vivo in S. cerevisiae optimized for the biosynthesis of oxidized derivatives of (+)-epi-α-bisabolol by coexpressing two key enzymes: the (+)-epi-α-bisabolol synthase and the NADPH cytochrome P450 reductase. Five out of 25 cytochromes P450 were capable of producing new hydroxylated regioisomers of (+)-epi-α-bisabolol. Of the new oxidized bisabolol products, the structure of one compound, 14-hydroxy-(+)-epi-α-bisabolol, was fully elucidated by NMR while the probable structure of the second product was determined. In parallel, the production of (+)-epi-α-bisabolol derivatives was enhanced through the addition of a supplementary genomic copy of (+)-epi-α-bisabolol synthase that augmented the final titer of hydroxylated product to 64 mg/L. We thus demonstrate that promiscuous drug metabolism cytochromes P450 can be used to produce novel compounds from a terpene scaffold.
journal_name
ACS Synth Bioljournal_title
ACS synthetic biologyauthors
Sarrade-Loucheur A,Ro DK,Fauré R,Remaud-Siméon M,Truan Gdoi
10.1021/acssynbio.9b00399subject
Has Abstractpub_date
2020-02-21 00:00:00pages
368-380issue
2issn
2161-5063journal_volume
9pub_type
杂志文章abstract::The structural complexity of nonribosomal peptides (NRPs) impeding economic chemical synthesis and poor cultivability of source organisms limits the development of bioprocesses for novel bioactive compounds. Since nonribosomal peptide synthetases (NRPSs) assemble NRPs from simple amino acid building blocks, heterologo...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/sb400082j
更新日期:2014-07-18 00:00:00
abstract::Medium-chain fatty acids (MCFAs) are key intermediates in the synthesis of medium-chain chemicals including α-olefins and dicarboxylic acids. In bacteria, microbial production of MCFAs is limited by the activity and product profile of fatty acyl-ACP thioesterases. Here, we engineer a heterologous bacterial medium-chai...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.7b00334
更新日期:2018-05-18 00:00:00
abstract::For infectious diseases, rapid and accurate identification of the pathogen is critical for effective management and treatment, but diagnosis remains challenging, particularly in resource-limited areas. Methods that accurately detect pathogen nucleic acids can provide robust, accurate, rapid, and ultrasensitive technol...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.9b00507
更新日期:2020-06-19 00:00:00
abstract::The methods to execute biological experiments are evolving. Affordable fluid handling robots and on-demand biology enterprises are making automating entire experiments a reality. Automation offers the benefit of high-throughput experimentation, rapid prototyping, and improved reproducibility of results. However, learn...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.6b00304
更新日期:2017-07-21 00:00:00
abstract::A streamlined approach toward the rapid fabrication of streptavidin-biotin-based protein microarrays was investigated. First, using our engineered versatile plasmid (pBADcM-tBirA) and an optimal coexpression strategy for biotin ligase and biotin acceptor peptide (BAP) chimeric recombinant protein, an autogeneration sy...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.0c00343
更新日期:2020-09-18 00:00:00
abstract::Gene expression noise arises from stochastic variation in the synthesis and degradation of mRNA and protein molecules and creates differences in protein numbers across populations of genetically identical cells. Such variability can lead to imprecision and reduced performance of both native and synthetic networks. In ...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.8b00279
更新日期:2018-11-16 00:00:00
abstract::Top-down reduction of the bacterial genome to construct desired chassis cells is important for synthetic biology. However, the current progress in the field of genome reduction is greatly hindered by indispensable life-essential genes that are interspersed throughout the chromosomal loci. Here, we described a new meth...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/sb500324p
更新日期:2015-06-19 00:00:00
abstract::In response to emergent antibiotic resistance, new strategies are needed to enhance the effectiveness of existing antibiotics. Here, we describe a phagemid-delivered, RNA-mediated system capable of directly knocking down antibiotic resistance phenotypes. Small regulatory RNAs (sRNAs) were designed to specifically inhi...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/sb500033d
更新日期:2014-12-19 00:00:00
abstract::Movement of molecules across membranes in response to a stimulus is a key component of cellular programming. Here, we characterize and manipulate the response of a protein-based piston capable of puncturing membranes in a pH-dependent manner. Our protein actuator consists of modified R bodies found in a bacterial endo...
journal_title:ACS synthetic biology
pub_type: 信件
doi:10.1021/acssynbio.5b00237
更新日期:2016-04-15 00:00:00
abstract::DNA circuits have been widely used to develop biological computing devices because of their high programmability and versatility. Here, we propose an architecture for the systematic construction of DNA circuits for analog computation based on DNA strand displacement. The elementary gates in our architecture include ad...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.6b00144
更新日期:2016-08-19 00:00:00
abstract::Synthetic biology involves reprogramming and engineering of regulatory genes in innovative ways for the implementation of novel tasks. Transcriptional gene regulation systems induced by small molecules in prokaryotes provide a rich source for logic gates. Cross-regulation, whereby a promoter is activated by different ...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/sb3000244
更新日期:2012-07-20 00:00:00
abstract::Bacteria of the order Actinomycetales are one of the most important sources of pharmacologically active and industrially relevant secondary metabolites. Unfortunately, many of them are still recalcitrant to genetic manipulation, which is a bottleneck for systematic metabolic engineering. To facilitate the genetic mani...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.5b00038
更新日期:2015-09-18 00:00:00
abstract::DNA replication is one of the central functions of the cell. The complexity of modern DNA replication systems raises a question: is it possible to achieve a simpler continuous isothermal DNA replication using fewer proteins? Here, we searched such replication using an evolutionary approach. Through a long-term serial ...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.0c00137
更新日期:2020-07-17 00:00:00
abstract::In this paper, we present a new strategy for microprinting dense bacterial communities with a prescribed organization on a substrate. Unlike conventional bioprinting techniques that require bioinks, through optogenetic manipulation, we directly manipulated the behaviors of Pseudomonas aeruginosa to allow these living ...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.8b00003
更新日期:2018-05-18 00:00:00
abstract::Ethylene is an industrially important compound, but more sustainable production methods are desirable. Since cellulosomes increase the ability of cellulolytic enzymes by physically linking the relevant enzymes via dockerin-cohesin interactions, in this study, we genetically engineered a chimeric cellulosome-like compl...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/sb400197f
更新日期:2014-07-18 00:00:00
abstract::The photoreceptor cryptochrome 2 (CRY2) has become a powerful optogenetic tool that allows light-inducible manipulation of various signaling pathways and cellular processes in mammalian cells with high spatiotemporal precision and ease of application. However, it has also been shown that the behavior of CRY2 under blu...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.5b00048
更新日期:2015-10-16 00:00:00
abstract::Increasing protein expression levels is a key step in the commercial production of enzymes. Predicting promoter activity and translation initiation efficiency based solely on consensus sequences have so far met with mixed results. Here, we addressed this challenge using a "brute-force" approach by designing and synthe...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.8b00110
更新日期:2018-07-20 00:00:00
abstract::Recent advances in the design and construction of synthetic multicelled systems in E. coli and S. cerevisiae suggest that it may be possible to implement sophisticated distributed algorithms with these relatively simple organisms. However, existing design frameworks for synthetic biology do not account for the unique ...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/sb300034m
更新日期:2012-08-17 00:00:00
abstract::Crossbreeding is a classical yeast hybridization procedure, where the mating of haploid cells of opposite mating-type, MATa and MATα cells, produces a new heterozygous diploid. Here, we describe a method to generate haploid MATa and MATα cells using mating-type conversion caused by expression of the HO gene, which enc...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/sb400016j
更新日期:2013-12-20 00:00:00
abstract::Most of the current methods for controlling the formation rate of a key protein or enzyme in cell factories rely on the manipulation of target genes within the pathway. In this article, we present a novel synthetic system for post-translational regulation of protein levels, FENIX, which provides both independent contr...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.8b00345
更新日期:2018-11-16 00:00:00
abstract::There is a growing interest in mediating information transfer between biology and electronics. By the addition of redox mediators to various samples and cells, one can both electronically obtain a redox "portrait" of a biological system and, conversely, program gene expression. Here, we have created a cell-based synth...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.9b00469
更新日期:2020-05-15 00:00:00
abstract::Cell-free protein synthesis (CFPS) is a widely used research tool in systems and synthetic biology. However, if CFPS is to become a mainstream technology for applications such as point of care manufacturing, we must understand the performance limits and costs of these systems. Toward this question, we used sequence sp...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.7b00465
更新日期:2018-08-17 00:00:00
abstract::We recently developed a technique for rapidly and reversibly inhibiting protein function through light-inducible sequestration of proteins away from their normal sites of action. Here, we adapt this method for inducible inactivation of Bem1, a scaffold protein involved in budding yeast polarity. We find that acute inh...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.5b00053
更新日期:2015-10-16 00:00:00
abstract::In many biotechnological applications, it is useful for gene expression to be regulated by multiple signals, as this allows the programming of complex behavior. Here we implement, in Escherichia coli, a system that compares the concentration of two signal molecules, and tunes GFP expression proportionally to their rel...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.7b00109
更新日期:2017-10-20 00:00:00
abstract::As a product of a multistep enzymatic reaction, accumulation of poly(3-hydroxybutyrate) (PHB) in Escherichia coli (E. coli) can be achieved by overexpression of the PHB synthesis pathway from a native producer involving three genes phbC, phbA, and phbB. Pathway optimization by adjusting expression levels of the three ...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.6b00083
更新日期:2016-11-18 00:00:00
abstract::Directed evolution requires the creation of genetic diversity and subsequent screening or selection for improved variants. For DNA mutagenesis, conventional site-directed methods implicitly utilize the Boolean AND operator (creating all mutations simultaneously), producing a combinatorial explosion in the number of ge...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.9b00063
更新日期:2019-06-21 00:00:00
abstract::The measurement of gene expression using fluorescence markers has been a cornerstone of synthetic biology for the past two decades. However, the use of arbitrary units has limited the usefulness of these data for many quantitative purposes. Calibration of fluorescence measurements from flow cytometry and plate reader ...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.0c00296
更新日期:2020-09-18 00:00:00
abstract::Bacterial biofilms are three-dimensional networks of cells entangled in a self-generated extracellular polymeric matrix composed of proteins, lipids, polysaccharides, and nucleic acids. Biofilms can establish themselves on virtually any accessible surface and lead to varying impacts ranging from infectious diseases to...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.9b00192
更新日期:2019-07-19 00:00:00
abstract::Dramatic improvements to computational, robotic, and biological tools have enabled genetic engineers to conduct increasingly sophisticated experiments. Further development of biological tools offers a route to bypass complex or expensive mechanical operations, thereby reducing the time and cost of highly parallelized ...
journal_title:ACS synthetic biology
pub_type: 信件
doi:10.1021/sb300054p
更新日期:2012-12-21 00:00:00
abstract::Phenazine-1-carboxamide (PCN) produced by multifarious Pseudomonas strains represents a promising candidate as a new metabolite pesticide due to its broad-spectrum antifungal activity and capacity to induce systemic resistance in plants. The rice rhizosphere Pseudomonas strain PA1201 contains two reiterated gene clust...
journal_title:ACS synthetic biology
pub_type: 杂志文章
doi:10.1021/acssynbio.0c00161
更新日期:2020-07-17 00:00:00