Download - Synthetic Biology for Carbon Neutrality
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Synthetic Biology for
Carbon Neutrality
Yin Li
Institute of Microbiology, Chinese Academy of Sciences
26th October 2021, at ANRRC 2021 Conference
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Public conception on synthetic biology
Awareness & Impressions of Synthetic Biology, 2013
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Chemistry
Biology
Computer
Engineering
Mathematics
Informatics
Convergence: Facilitating Transdisciplinary Integration of Life Sciences, Physical Sciences, Engineering, and
Beyond (2014)---National Academy of Sciences USA
Synthetic biology: new frontiers of biology
• Design and engineer novel biologically based parts, devices and
systems, redesign existing biological systems for useful purposes.
• Incorporates the principles of engineering e.g. modularity,
abstraction, and orthogonality into classical biotechnology
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“The third revolution: The Convergence of the Life Sciences, Physical Sciences, and Engineering” (2011) Massachusetts Institute of Technology
• From “Read” to “Design”,
indicating new revolution in
biology
• Opens a novel way to
understand the principle of
life and develop a new
paradigm for biological
research
The firstDNA structure
The second
Human genome project
The third
Synthetic biology
“The third revolution in biology”
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•Understanding the minimal number of parts needed for life, to serve as a basis for engineering minimal cell factories for new functions
Minimal Genomes
•Expanding genetic information storage and adding coding capacity
Orthogonal Biosystems/Xenobiology
•Designing synthetic gene circuits that may be based on standard biological parts
Regulatory Circuits
•Engineering biosynthetic pathways to yield useful products and overcoming/removing elements that block production
Metabolic Engineering
•Bottom-up chemical design approaches to create new cells
Protocells
•Utilising and exploiting synthetic molecular machines based on cellular systems
Bionanoscience
Synthetic Biology
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Developments of synthetic chromosome, non-natural genetic
codes, non-natural amino acids indicate life design is possible
Non-natural
amino acids in
E. coli
Nature 2015
The first
“synthesized
genome”
Science 2010
Synthesize
artificial
genetic
material XNA
Science 2012
Creating novel
functions for
ribosome
Nature 2015
Synthetic biology is breaking life boundary
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Scientists from USA, China, UK, France, Australia, Singapore published
7 papers on Science in Mar 2017. Four articles from China
Sc2.0 Project
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Creating a functional single chromosome
yeast
Prof. Zhongjun Qin, SIBS, CAS
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Synthesis of natural products, biofuel, drugs, and diagnosis tools
provide huge potential for the application of synthetic biology
Biosynthesis of
chemicals from
CO2 by electric
energy
Science 2012
Biosynthesis of
alkane to
produce diesel
and gasoline
Science 2010Nature 2013
Changing
traditional
treatment of
hyperuricemia
Nature Biotech 2010
Synthesis of
Artemisinin by
yeast will
decrease the
cost 90%
Nature 2013
Synthesis of taxol
will open a new
way to protect
rare plants
resource
Science 2010
The unlimited potential of synthetic biology
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Environments
Healthcare
New Drugs
New materials
Biofuel
Green chemistry
Green agriculture
The de novo engineering of genetic circuits, biological
modules, and synthetic pathways is beginning to address
these critical problems
Synthetic biology: applications
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CO2
CO2 Conversion, Utilization
Carbon-neutral
Carbon
net-increase
Fossil resources
Ideal circular-economy
carbon neutrality
• Fuels
• Materials
• Chemicals
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Acetyl-CoA
IPP
FPP
DMAPP
GGPP
Artemisic acid
Taxadiene
Malonyl-CoA
Fatty Acyl ACP
Alkane
Super synthetic cell
factories
Chemistry Biology Physics EngineeringMathematics
Systems biology Synthetic biology
Bio
hydrocarbon
Petroleum
Chemicals
Natural
products
Cut CO2 emission, energy consumption, waste
discharge, production cost, protect resources
Design and engineer cell factories
for bio-based manufacturing
Biomass sugars
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Multi-carbon
organic
substances
Energy
CO2
Biological conversion of CO2
• Efficient biocatalyst
• Energy efficiency 10-fold higher
• Process completed within days (not months)
• Chemistry: CO2 to urea, energy-intensive
• Nature does the job: low energy efficiency, 0.3-2%
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Ethanol
Lactic acid Isoprene
Fatty acid
Limonene
Sucrose
CO2
Ethylene
Acetone
isopropanol
Glycerol Butanol Isobutanol
Chemicals production from
photosynthetic cell factories
Farnesene
Biotechnology Advances 2019
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How do we do that? Light as energy source
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Chemosynthetic carbon fixation by
the tube worm Riftia pachyptila
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Comparative analysis of carboxylation
activity and solubility of Rubiscos
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Rubisco carbon capture to produce
D-lactate in E. coli
RPE Rubisco showed a 3.6-fold higher carbon capture efficiency
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Glycolate production via oxygenation
function of form II Rubisco
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Glycolate production via oxygenation
function of form II Rubisco
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Glycolate production via oxygenation
function of form II Rubisco
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Electron flow: starting from photosynthesis
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Photosynthetic electrons can be
converted into electricity
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The insulativity of cell wall prevents
photosynthetic electrons from exporting
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From a single strain
To a microbial consortium
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Lactic acid
Redirecting the electron flow enables
photo-electricity conversion
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Maintaining over 40 days
average power output 135 mW/m2
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Stability test(medium 20 fold/Schewanella 200 fold)
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Cyanobacterial growth promoted
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<10 mW∙m-2
150 mW∙m-2
Cell wall insulativity circumvented
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Biophotovoltaics based on synthetic
microbial consortium
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Chemoenzymatic starch synthesis from CO2
Artificial Starch Anabolic Pathway
22 nmol CO2/min/mg total enzymes – 8.5 times CO2 to corn starch
Science, 24.09.2021Prof. Yanhe Ma
Tianjin Institute of Industrial Biotechnology, CAS
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Future: from CO2 to organic chemicals
Energy
Light, renewable electricity, ……
Making significant contribution to carbon neutrality
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Microbial resources and synthetic biology
--- huge potential
1. Bank/Library
- culture collections/data centers
- e.g. iGEM, contribution-based sharing
2. Standardization/Dynamics/Interactions
3. Consortium
4. Industry/Academic Collaborations
5. Connecting with the Global Community
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RPE Rubisco: Junli Zhang, Guoxia Liu
Glyoxylate: Fan Yang
Biophotovoltaics: Huawei Zhu
Funding from:
NSFC, CAS, MOST
Acknowledgements
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Thank you
CO2
Sustainability