Quantitative determination of FtsA at different growth rates in Escherichia coli using monoclonal antibodies
| Autor: | Haichao Wang, Randall C. Gayda |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Cell division
medicine.drug_class Blotting Western Enzyme-Linked Immunosorbent Assay Monoclonal antibody medicine.disease_cause Microbiology Sensitivity and Specificity Inclusion bodies Gene product Mice Bacterial Proteins medicine Escherichia coli Animals Molecular Biology Mice Inbred BALB C biology Escherichia coli Proteins fungi Antibodies Monoclonal biology.organism_classification Enterobacteriaceae Molecular biology Antibodies Bacterial Blot FtsA Cell Division |
| Zdroj: | Molecular microbiology. 6(17) |
| ISSN: | 0950-382X |
| Popis: | Summary FtsA is an essential cell division protein in Escherichia coli. Its synthesis in low amounts makes the investigation of its functions difficult. Partially purified FtsA protein was obtained by solubilizing cellular inclusion bodies after overexpression of the ftsA gene for the purpose of raising monoclonal antibodies. Mice were immunized with this FtsA protein fraction and their spleen cells were fused to Sp2/0-AG14 mouse myeloma cells. Hybrid cells were screened and two clones were positively identified as FtsA monoclonal antibody producers by enzyme-linked immunosorbent assay and Western blotting. A quantitative assay using these monoclonal antibodies indicated that the average number of FtsA molecules per cell to be between 50 and 200. However, the concentration of FtsA protein normalized to total cell protein was constant over a wide range of growth rates. This finding is in agreement with the hypothesized role of FtsA protein as a stoichiometric component of the septum. |
| Databáze: | OpenAIRE |
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