بسمه تعالی. Cytoplasm. Cytoplasmic area Cytoplasmic membrane invagination Meny bacteria specially G+ Mesosmes Central mesosomes DNA Peripheral mesosomes Transport of extra cellular enzyme (penicillinase) Thylakoid. Cytoplasm. Cytoplasmic area 1- ribosom Free Bound to cytoplasm
Inclusions are aggregates of various compounds that are normally involved in storing energy reserves or building blocks for the cell. Inclusions accumilate when a cell is grown in the presence of excess nutrients and they are often observed under laboratory conditions.
Storage materials and inclusions
Poly-beta-hydroxyalkanoate (PHA)One of the more common storage inclusions is PHA. It is a long polymer of repeating hydrophobic units that can have various carbon chains attached to them. The most common form of this class of polymers is poly-beta-hydroxybutyrate that has a methyl group as the side chain to the molecule. Some PHA polymers have plastic like qualities and there is some interest in exploiting them as a form of biodegradable plastic. The function of PHA in bacteria is as a carbon and energy storage product. Just as we store fat, bacteriastore PHA
Another polymer often found in aerobic bacteria especially under high-carbon, low nitrogen culture condition, is a chloroform-soluble, lipidlike material, PHB
Serve as a reserve carbon and energy source.
PHB can be stain with lipid-soluble dyes such as Nile blue.
Many organisms will accumilate granules of polyphosphate, since this is a limiting nutrient in the environment. The globules are longs chains of phosphate. Photosynthetic bacteria that do not evolve oxygen will often use sulfides as their source of electrons, some of them accumilating sulfur globules. These globules may later be further oxidized and disapper if the sulfide pool dries up
The cyanobacteria carry out oxygenic photosynthesis, that is, they use water as an electron donor and generate oxygen during photosynthesis.The photosynthetic system is located in an extensive thylakoid membrane system that is lined with particles called phycobilisomes