|  | Brainstorming(Topic design, literature investigation) | 
                            
                                |  | Design and synthesis of gene sequences and primers | 
                            
                                | 3.24-3.30 | Double digest pML104, sgRNA hybridized, T4 ligation | 
                            
                                | 3.31-4.03 | Transformation and verification of recombination plasmid | 
                            
                                | 4.04-5.09 | Construction of recombination plasmid pUC57-pADH1-NcEgt1-tCYC1 | 
                            
                                | Construction of recombination plasmid pUC57-H1-pADH1-NcEgt1-tCYC1-H2 | 
                            
                                | 5.10-5.14 | Transformation with donor DNA and recombination plasmid | 
                            
                                | 5.15-5.21 | Selection of positive transformants and loss of sgRNA/Cas9 expression plasmid | 
                            
                                | 5.22-5.28 | Fermentation culture of recombinant strain and detection of target product by HPLC | 
                            
                                | 5.29-6.03 | Detection of target product by LC-MS | 
                            
                                | 6.04-6.16 | Construction of recombination plasmid pTEF2-pTEF1-CpEgt2-tCYC1 | 
                            
                                | Construction of recombination plasmid pTEF2-H1-pTEF1-CpEgt2-tCYC1-H2 | 
                            
                                | 6.17-6.22 | Construction of recombination pML104 targeting Saccharomyces cerevisiae chromosome
                                    11 | 
                            
                                | 6.23-7.04 | Transformation with donor DNA and recombination plasmid | 
                            
                                | 7.05-7.10 | Selection of positive transformants and loss of sgRNA/Cas9 expression plasmid | 
                            
                                | 7.11-7.22 | Testing of EGT production capacity of two engineered strains | 
                            
                                | 7.23-8.02 | Determination of growth curve |