Bioprocess Engineering, Transcriptome, and Intermediate Metabolite Analysis of L-Serine High-Yielding Escherichia coli W3110
Abstract
:1. Background
2. Materials and Methods
2.1. Strains, Media, and Materials
2.2. Construction of Gene Knockout Mutants
2.3. Construction of the glyA Mutant Library
2.4. Chromosomal Integration of Glymut Constructs
2.5. Plasmid Construction for Overexpression of L-Serine Biosynthetic Pathway Components
2.6. PGDH and SHMT Enzyme Assays
2.7. Shake Flask and Fed-Batch Fermentation
2.8. Sample Preparation and Extraction for Intermediate Metabolite Analysis
2.9. Analytical Methods
2.10. Transcriptome Datasets
3. Results and Discussion
3.1. Construction of the L-Serine Production Strain from E. coli W3110
3.2. Influence of Mutations in glyA on L-Serine Production and Cell Growth
3.3. Influence of sdaB, ilvA, tdcB and tdcG Deletion on L-Serine Production
3.4. Effect of Engineering L-Serine Transport System on Strain Productivity
3.5. Transcriptomic Analysis of E. coli W3110 and SSW-10/SP-09
3.6. Intermediate Metabolite Analysis of E. coli W3110 and SSW-10/SP-09
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
Glcex | Extracellular glucose |
PEP | Phosphoenolpyruvate |
PYR | Pyruvic acid |
G6P | Glucose-6-phosphate |
F6P | Fructose-6-phosphate |
F-1 | Fructose-1 |
6-BP | 6-bisphosphate |
GA3P | Glyceraldehyde-3-phosphate |
3-BG | 3-bisphosphoglycerate |
3-PG | 3-phosphoglycerate |
2-PG | 2-phosphoglycerate |
AcCoA | Acetyl-coa |
Cit | Citric acid |
cis-Aco | Cis-aconitic acid |
ICit | Isocitric acid |
2-OXO | 2-oxoglutarate |
SucCoA | Succinyl-coa |
Suc | Succinic acid |
Fum | Fumaric acid |
Mal | Malic acid |
OAA | Oxaloacetic acid |
NAD+ | Oxidized nicotinamide adenine dinucleotide |
3-PHP | 3-phosphonooxypyruvate |
L-Ser | L-serine |
D-Ser | D-serine |
L-Leu | L-leucine |
L-Ile | L-isoleucine |
L-Val | L-valine |
Gly | Glycine |
L-Gln | L-glutamine |
L-Glu | L-glutamate |
PLP | Pyridoxal 5-phosphate monohydrate |
THF | Tetrahydrofolate |
MTHF | 5,10-methylene tetrahydrofolate |
LPL | Lipoylprotein |
DHP | Dihydrolipoylprotein |
amDHP | Aminomethyldihydrolipoylprotein |
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Name | Description | Source |
---|---|---|
E.coli DH5α | Host of plasmid | Lab stock |
E.coli BL21(DE3) | Expression strains | ATCC 26003 |
E.coli W3110 | Parental strains | ATCC 23275 |
SSW-01 | W3110 ΔsdaA | This work |
SSW-02 | W3110 ΔsdaA glyA | This work |
SSW-03 | W3110 ΔsdaA glyAmut | This work |
SSW-05 | W3110 ΔsdaA glyAmut sdaB | This work |
SSW-06 | W3110 ΔsdaA glyAmut ilvA | This work |
SSW-07 | W3110 ΔsdaA glyAmut tdcB | This work |
SSW-08 | W3110 ΔsdaA glyAmut tdcG | This work |
SSW-10 | W3110 ΔsdaABC glyAmut | This work |
Name | Description | Source |
---|---|---|
pT 7-7 | amp marker, T7 promoter | Takara |
pSC | Low copy number, kan marker, p15A replicon, lambda PR and PL promoters | Lab stock |
pKD13 | amp and kan markers | [16] |
pKD46 | amp marker, temperature-sensitive | [16] |
pCP20 | amp and chl makers, temperature-sensitive | [16] |
pMD19-T simple | amp maker, TA cloning vector, 2692 bp | Takara |
Pcas | repA101(Ts) kan Pcas-cas9 ParaB-Red lacIq Ptrc-sgRNA-pMB1 | [17] |
PtargetF | pMB1 aadA | [17] |
PtargetF-glyA | pMB1 aadA sgRNA-glyA | This work |
pT-serA | pT 7-7 derivative, carrying serA | This work |
pT-serAfr | pT 7-7 derivative, carrying serA | This work |
pT-glyA | pT 7-7 derivative, carrying glyA | This work |
pT-glyAmut | pT 7-7 derivative, carrying glyAmut | This work |
SP-01 | SP derivative, carrying serAfr | This work |
SP-02 | SP derivative, carrying serAfr, serC | This work |
SP-05 | SP derivative, carrying serAfr, serC and serB | This work |
SP-08 | SP derivative, carrying serAfr, serB, serC and pgk | This work |
SP-09 | SP derivative, carrying serAfr, serB, serC, pgk and thrE | This work |
Name | Sequence (5′–3′) a | Restriction Enzyme |
---|---|---|
serA-p1 | TCTAGAAAGAAGGAGATATACCATGGCAAAGGTATCGCTGGAG | Xba I |
serA-p2 | GAGCTCGTGAGTAAGGGTAAGGGAGGATTG | Sac I |
serB-p1 | AGATCTAAGAAGGAGATATACCATGCCTAACATTACCTGGTGCGACC | Bgl II |
serB-p2 | AGTACTGGCTGATATCGGAGAGTTTCTGGAC | Sca I |
serC-p1 | AGATCTAAGAAGGAGATATACCATGGCTCAAATCTTCAATTTTAG | Bgl II |
serC-p2 | CAGCTGTACGATCGGCTGAAAGCGTATAG | pvu II |
pgk-p1 | TCTAGAAAGAAGGAGATATACCATGTCTGTAATTAAGATGACCGATCTGG | Xba I |
pgk-p2 | GAGCTCTTGATGGAGTCAGTACCGACG | Sac I |
thrE-p1 | AGTACTAAGAAGGAGATATACCATGTTGAGTTTTGCGACCCTTCG | Sca I |
thrE-p2 | AGATCTAGATCTACATCAAAGTGACGCCGTCGAAG | Xba I |
Site directed mutagenesis primers used for mutation of serA | ||
serA-p3 | GATGCACATCGCAGAAGCA | |
serA-p4 | GCCCGGACGTGCTTCTGCGATGTGCATC | |
glyA primers | ||
glyA-F | GGAATTCCATATGTTAAAGCGTGAAATGAAC | Nde I |
glyA-R | CCCAAGCTTTTATGCGTAAACCGGGTAAC | Hind III |
sgRNA-F | TGGCAACCCACTTCAGCACCACTAGTATTATACCTAGGAC | |
sgRNA-R | GGTGCTGAAGTGGGTTGCCAGTTTTAGAGCTAGAAATAGC | |
glyA-D-F | TGTCCAACAGGACCGCCTATAAAGGCCAAAAATTTTATTGTTAGCTGAGTCAGGAGATGCGGATGTTAAAGCGTGAAATGAACATTG | |
glyA-D-R | GGCGTTCACGCCGCATCCGGCATGAACAACGAGCACATTGACAGCAAATCACCGTTTCGCTTATGCGTAAACCGGGTAACG |
Position | Sequence Change | Protein Change | SHMT Activity (U) |
---|---|---|---|
-- | -- | -- | 0.65 ± 0.033 a |
24 | T → G | I8M (ATT → ATG) | 0.63 ± 0.022 |
88 | A → T | I30F (ATC → TTC) | 0.34 ± 0.005 |
145 | T → A | S49T (TCT → ACT) | 0.58 ± 0.005 |
149 | A → T | Q50L (CAG → CTG) | 0.24 ± 0.02 |
301 | G → T | A101S (GCT → TCT) | 0.22 ± 0.016 |
483 | A → T | Q161H (CAA → CAT) | 0.66 ± 0.018 |
532 | T → C | S178P (TCC → CCC) | 0.36 ± 0.028 |
572 | A → C | D191A (GAC → GCC) | 0.6 ± 0.019 |
685/686 | AA → GG | K229G (AAA → GGA) | 0.13 ± 0.005 |
743 | T → G | L248R (CTG → CGG) | 0.56 ± 0.014 |
902 | T → G | V301G (GTG → GGG) | 0.57 ± 0.017 |
1073 | T → C | V358A (GTG → GCG) | 0.54 ± 0.01 |
1163 | A → T | D388V (GAC → GTC) | 0.57 ± 0.008 |
1195 | A → T | I399F (ATC → TTC) | 0.62 ± 0.032 |
1225 | A → C | I409L (ATC → CTC) | 0.44 ± 0.004 |
1238 | A → C | Y413S (TAC → TCC) | 0.59 ± 0.012 |
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Wang, C.; Li, Q.; Zhou, P.; Chen, X.; Shi, J.; Zhao, Z. Bioprocess Engineering, Transcriptome, and Intermediate Metabolite Analysis of L-Serine High-Yielding Escherichia coli W3110. Microorganisms 2022, 10, 1927. https://doi.org/10.3390/microorganisms10101927
Wang C, Li Q, Zhou P, Chen X, Shi J, Zhao Z. Bioprocess Engineering, Transcriptome, and Intermediate Metabolite Analysis of L-Serine High-Yielding Escherichia coli W3110. Microorganisms. 2022; 10(10):1927. https://doi.org/10.3390/microorganisms10101927
Chicago/Turabian StyleWang, Chenyang, Qinyu Li, Peng Zhou, Xiaojia Chen, Jiping Shi, and Zhijun Zhao. 2022. "Bioprocess Engineering, Transcriptome, and Intermediate Metabolite Analysis of L-Serine High-Yielding Escherichia coli W3110" Microorganisms 10, no. 10: 1927. https://doi.org/10.3390/microorganisms10101927