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Title: Bacterial structure
Description: Simple diagram illustrating the bacterial envelope
Description: Simple diagram illustrating the bacterial envelope
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Cytoplasmic membrane:
• active transport of ions and nutrients
• synthesis of lipids, peptidoglycan, LPS,
capsular polysaccharides
• protein secretion
• ETC
• flagella, chemotaxis
Outer membrane (Gram-)
• osmoregulation (filter) - allows small
molecules, may exclude antibiotics and
enzymes
• LPS, porins, virulence factors (proteins)
- antigenicity
- classification
Cell wall:
• peptidoglycan, made by PBPs
• rigidity, prevents osmotic lysis
Cell wall carbohydrates
--> Lancefield groups
S
...
influenzae
N
Title: Bacterial structure
Description: Simple diagram illustrating the bacterial envelope
Description: Simple diagram illustrating the bacterial envelope