Bacterial Cell Structure

Bacterial Cell Structure

1. Cytoplasm

   • Lacks organelles bound by unit membrane Mainly water Major part of protoplasm (PM membrane and everything within) 
   • Nucleid
   • Ribosomes
   • Cytoskeleton
     • FtsZ, MreB, CreS
       • FtsZ: homolog of tublin; initiates cell division  MreB: homolog of actin; gives rod shape CreS: homolog of intermediate filaments; only found in caulobacteria; induces curve in cell
   • Inclusion bodies
     • Aggregation of inorganic and organic material; some are enclosed by single layer shells (some are lipids, proteins, etc)
     • Storage inclusions
       • Organic: PHB Inorganic: polyphosphate granules 

2. Cell Membrane

3. Cell Wall

4. Extracellular Features

5. Archae