title: Modeling of the controlled expression of a harmful protein by a three-plasmid harboring system.
abstract: A genetically structured mathematical model was developed and used to evaluate the influence of molecular parameters involved in the expression of a harmful recombinant protein (SPA::EcoRI). The system consists of the controlled expression of the endonuclease EcoRI cloned in the plasmid pMTC48. The control is exerted by the lambda CI repressor expressed from the plasmid pRK248cIts. The deleterious effect of the activity of the enzyme EcoRI on the host DNA is prevented by the action of the EcoRI methylase that is expressed constitutively from a third plasmid, pEcoR4. The model includes molecular mechanisms involved in the regulation of the expression of these genes and is used to determine cultural conditions that maximize the production of the recombinant protein.
mesh_terms: D003198:Computer Simulation; D004249:DNA Damage; D004268:DNA-Binding Proteins; D015246:Deoxyribonuclease EcoRI / Q000096:biosynthesis / Q000235:genetics; D004926:Escherichia coli / Q000145:classification / Q000235:genetics* / Q000378:metabolism; D015964:Gene Expression Regulation, Bacterial / Q000235:genetics*; D005818:Genetic Engineering / Q000379:methods; D007700:Kinetics; D008954:Models, Biological; D008956:Models, Chemical; D008957:Models, Genetic; D010957:Plasmids / Q000235:genetics*; D014176:Protein Biosynthesis; D011993:Recombinant Fusion Proteins / Q000096:biosynthesis / Q000235:genetics; D012097:Repressor Proteins / Q000235:genetics / Q000378:metabolism; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013045:Species Specificity; D013205:Staphylococcal Protein A / Q000096:biosynthesis* / Q000235:genetics; D013210:Staphylococcus / Q000235:genetics; D014158:Transcription, Genetic; D014764:Viral Proteins; D054334:Viral Regulatory and Accessory Proteins
chemical_list: D004268:DNA-Binding Proteins; D011993:Recombinant Fusion Proteins; D012097:Repressor Proteins; D013205:Staphylococcal Protein A; D014764:Viral Proteins; D054334:Viral Regulatory and Accessory Proteins; C016649:phage repressor proteins; D015246:Deoxyribonuclease EcoRI