scholarly journals Evolutionary algorithms and synthetic biology for directed evolution: commentary on “on the mapping of genotype to phenotype in evolutionary algorithms” by Peter A. Whigham, Grant Dick, and James Maclaurin

2017 ◽  
Vol 18 (3) ◽  
pp. 373-378 ◽  
Author(s):  
Douglas B. Kell
2015 ◽  
Vol 44 (5) ◽  
pp. 1172-1239 ◽  
Author(s):  
Andrew Currin ◽  
Neil Swainston ◽  
Philip J. Day ◽  
Douglas B. Kell

Improving enzymes by directed evolution requires the navigation of very large search spaces; we survey how to do this intelligently.


2020 ◽  
Vol 74 (5) ◽  
pp. 402-406
Author(s):  
Sven Panke

Despite the availability of a variety of ' -omics ' technologies to support the system-wide analysis of industrially relevant microorganisms, the manipulation of strains towards an economically relevant goal remains a challenge. Remarkably, our ability to catalogue the participants in and model ever more comprehensive aspects of a microorganism's physiology is now complemented by technologies that permanently expand the scope of engineering interventions that can be imagined. In fact, genome-wide editing and re-synthesis of microbial and even eukaryotic chromosomes have become widely applied methods. At the heart of this emerging system-wide engineering approach, often labelled ' Synthetic Biology ' , is the continuous improvement of large-scale DNA synthesis, which is put to two-fold use: (i) starting ever more ambitious efforts to re-write existing and coding novel molecular systems, and (ii) designing and constructing increasingly sophisticated library technologies, which has led to a renaissance of directed evolution in strain engineering. Here, we briefly review some of the critical concepts and technological stepping-stones of Synthetic Biology on its way to becoming a mature industrial technology.


2015 ◽  
Vol 5 (4) ◽  
pp. 20150035 ◽  
Author(s):  
Liisa D. van Vliet ◽  
Pierre-Yves Colin ◽  
Florian Hollfelder

The idea of compartmentalization of genotype and phenotype in cells is key for enabling Darwinian evolution. This contribution describes bioinspired systems that use in vitro compartments—water-in-oil droplets and gel-shell beads—for the directed evolution of functional proteins. Technologies based on these principles promise to provide easier access to protein-based therapeutics, reagents for processes involving enzyme catalysis, parts for synthetic biology and materials with biological components.


2021 ◽  
pp. 107762
Author(s):  
Andrew Currin ◽  
Steven Parker ◽  
Christopher J. Robinson ◽  
Eriko Takano ◽  
Nigel S. Scrutton ◽  
...  

Author(s):  
Masahiro Tominaga ◽  
Akihiko Kondo ◽  
Jun Ishii

Genetic switches can be utilized for many purposes in synthetic biology including the assembly of complex genetic circuits to achieve sophisticated cellular systems and the construction of biosensors for real-time monitoring of intracellular metabolite concentrations. Although genetic switches have mainly been developed in prokaryotes to date, eukaryotic genetic switches are increasingly being reported as both rational and irrational engineering technologies mature. In this review, we describe genetic switches in yeast based on synthetic transcription factors and/or synthetic promoters. We also discuss directed evolution technologies for the rapid and robust construction of yeast genetic switches.


2016 ◽  
Vol 39 ◽  
pp. 126-133 ◽  
Author(s):  
Marcelo C Bassalo ◽  
Rongming Liu ◽  
Ryan T Gill

2021 ◽  
Author(s):  
Yuxue Liu ◽  
Zhuoya Li ◽  
Xiaojia Guo ◽  
Xueying Wang ◽  
Zongbao K. Zhao

Abstract BackgroundEnzymes with dedicated cofactor preference are essential for advanced biocatalysis and biomanufacturing. However, directed evolution of an enzyme to switch its cofactor preference is often hindered by the lack of efficient and affordable method for screening as the cofactor per se or the substrate can be prohibitively expensive. Here, we developed a growth-based selection platform to identify nonnatural cofactor-dependent oxidoreductase mutants.ResultsThe growth-based selection platform was designed by coupling with nonnatural cofactor-dependent phosphite dehydrogenase (Pdh) mediated the conversion of non-metabolizable phosphite into phosphate in the culture media. Thus, Pdh variant that strongly favors nicotinamide cytosine dinucleotide (NCD), a NAD analogue, the feasibility of this strategy was successfully demonstrated using derived NCD-active malic enzyme as well as for the directed evolution of NCD synthetase in Escherichia coli.ConclusionsHere, we built a phosphite-based screening platform for identification of enzymes favoring nonnatural cofactor NCD. In the future, once Pdh variants favoring other biomimetic or nonnatural cofactors are available this selection platform may be readily redesigned to attain new enzyme variants with anticipated cofactor preference, providing opportunities to further expand the chemical space of redox cofactors in chemical biology and synthetic biology.


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