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PDF of thesis T14900 PDF of thesis T14900 - (8 M)
Title Investigating the protein-protein interactions of SCO3607 and SCO3608 and their role in cell morphology in Streptomyces coelicolor / Charles Fredrik Webb.
Name Webb, Charles Fredrik. .
Abstract Flotillin is a protein intrinsic to cell viability in humans, where it plays a role in cell morphology and structure. In Bacillus subtilis, it is involved in sporulation. NfeD always accompanies flotillins in prokaryotes, normally as an adjacent gene, though it is not present in eukaryotes. SCO3607 and SCO3608, encoding flotillin and NfeD, respectively, are present in Streptomyces coelicolor. No previous studies have examined the role of these two proteins in S. coelicolor. Preliminary bioinformatics revealed NfeD-encoding genes in actinobacteria, which was tentatively suggested as a new group of NfeD proteins; NfeD1b-5. Tn5062 transposon insertions in SCO3607 and deletions of both genes, separately and together, displayed no macroscopic phenotype; while fluorescence microscopy revealed phenotypes related to cell polarity. SCO3607 mutants displayed shorter tip to branch and cross-wall to cross-wall distances, while SCO3608 mutants displayeda milder phenotype. A double knockout mutant displayed shorter intra cross-wall distances and enlarged spores. Bacterial two hybrid experiments were also performed, revealing SCO3607-SCO3607 interactions, though N-terminal fusions of the cya-domains to SCO3607 abolished the interaction, suggesting the N-terminus is essential for the interaction.
Publication date 2018.
Name Herron, Paul, degree supervisor.
Name University of Strathclyde. Strathclyde Institute of Pharmacy and Biomedical Sciences.
Thesis note Thesis Ph. D. University of Strathclyde 2018 T14900

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