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Cell structure and Function in Bacteria and Archaea (Nucleoid structure…
Cell structure and Function in Bacteria and Archaea
Periplasm space
Is a concentrated gel-like matrix between inner cytoplasmic membrane & outer bacterial membrane
Gram negative cell wall
Composed?
Outer membrane linked to thin,mainly single-layered peptidoglycan by lipoprotein
Located?
Within periplasmic space
Contents?
Membrane derived oligosaccharides (MDO) a class of osmotically active carbohydrates, a major organic solute present in the periplasm of E.coli
Digestive enzyme and binding protein that aid the uptake of molecules into the cytoplasm
Function
represent as buffer
degrade large molecule such as nucleic acid and large protein to a size that is more easily transportable
Periplasmic protein contains
nucleases
phosphatases
Proteases
Beta lactamase
Protect the bacterium by degrading antibiotic before they can penetrate into cytoplasm and their site of lethal action
Nucleoid structure
Is the region of a prokaryotic cell that houses the chromosomal DNA