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동의어 포함
Title Page 1
Abstracts 4
Contents 5
1. Introduction 9
2. Materials and methods 12
2.1. Media and culture conditions 12
2.2. Plasmid construction 13
2.3. Construction of S. cerevisiae recombinant strains 33
2.4. Construction of K. phaffii recombinant strains 34
2.5. Protein purification and quantification 35
2.6. Peroxidase activity assay for planthemoglobin 36
2.7. Precipitation of recombinant proteins by ammonium sulfate 37
3. Results 38
3.1. Secretory production of plant hemoglobins 38
3.2. Effect of hemin supplementation on planthemoglobin production 41
3.3. Plant hemoglobin precipitation using ammonium sulfate 53
3.4. Screening the signal peptide of production of plant hemoglobins 56
4. Discussion 65
5. Conclusions 67
References 68
국문초록 73
Figure 1. Schematic diagram of planthemoglobins expression in yeast 11
Figure 2. Gel electrophoresis results of backbone and insert fragments for construction of planthemoglobins expression plasmid in S. cerevisiae 24
Figure 3. Gel electrophoresis result of backbone and insert fragments for construction of planthemoglobins expression plasmid in K. phaffii 25
Figure 4. The plasmid map containing planthemoglobin expression cassette for S. cerevisiae 29
Figure 5. The plasmid map containing planthemoglobin expression cassette for K. phaffii 32
Figure 6. Quantification of planthemoglobins secreted by S. cerevisiae and K. phaffii with MF a signal peptide 39
Figure 7. Image-J analysis of the planthemoglobins content with MF a signal peptide 40
Figure 8. SDS-PAGE analysis of purified planthemoglobins secreted by recombinant S. cerevisiae with hemin supplementation 44
Figure 9. Image-J analysis of the planthemoglobins content in S. cerevisiae with hemin supplementation 45
Figure 10. Effect of hemin supplementation on planthemoglobins production in S. cerevisiae 46
Figure 11. SDS-PAGE analysis of purified planthemoglobins secreted by recombinant K. phaffii with hemin supplementation 49
Figure 12. Image-J analysis of the planthemoglobins content in K. phaffii with hemin supplementation 50
Figure 13. Effect of hemin supplementation on planthemoglobins production in K. phaffii 51
Figure 14. SDS-PAGE analysis of planthemoglobin concentrates using ammonium sulfate precipitation in S. cerevisiae 54
Figure 15. SDS-PAGE analysis of planthemoglobin concentrates using ammonium sulfate precipitation in K. phaffii 55
Figure 16. SDS-PAGE analysis of purified planthemoglobins secreted by recombinant S. cerevisiae with different signal peptides 58
Figure 17. Comparison of planthemoglobins production in S. cerevisiae with different signal peptides 59
Figure 18. Image-J analysis of the planthemoglobins content in S. cerevisiae with different signal peptides 60
Figure 19. SDS-PAGE analysis of purified planthemoglobin secreted by recombinant K. phaffii with different signal peptides 62
Figure 20. Comparison of planthemoglobins production in K. phaffii with different signal peptides 63
Figure 21. Image-J analysis of the planthemoglobins content in K. phaffii with different signal peptides 64
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