Bacterial capsule slideshare

Capsule of bacteriacomposition ,function of capsule etc. Read less. Download Now Download to read offline. Recommended Bacterial cell wall.

Download Now Download to read offline. Recommended Bacterial capsule. Bacterial capsule Mohit Hinsu. Flagella Microbiology. Bacterial cell wall.

Bacterial capsule slideshare

Flagella, pilli. Download Now Download to read offline. Recommended Bacterial cell wall. Bacterial cell wall Ashfaq Ahmad. Classification of fungi. Classification of fungi swethamohan Culture media. Culture media Namdeo Shinde. Classification of bacteria. Bacterial capsule. Bacterial capsule Mohit Hinsu. Spore staining.

Retrieved Bright field microscopes. Chapter 4 functional anatomy of prok and euk partial BilalHoushaymi.

Bacterial capsules are composed of polysaccharides or other polymers that surround the cell wall. Capsules help bacteria resist phagocytosis and play a role in pathogenicity. Various staining methods can be used to visualize capsules, which are difficult to stain due to their non-ionic nature. Anthony's capsule stain uses crystal violet and copper sulfate to differentially stain the cell wall purple and leave the decolorized capsule appearing blue against the background. Maneval's method uses Congo red and acid fuchsin to reveal white capsules against a red-blue background.

What have we learned so far, in terms of cell layers? All cells have a cell membrane. Most bacteria have a cell wall. But there are a couple of additional layers that bacteria may, or may not, have. These would be found outside of both the cell membrane and the cell wall, if present. A bacterial capsule is a polysaccharide layer that completely envelopes the cell. It is well organized and tightly packed, which explains its resistance to staining under the microscope. The capsule offers protection from a variety of different threats to the cell, such as desiccation, hydrophobic toxic materials i. The capsule can enhance the ability of bacterial pathogens to cause disease and can provide protection from phagocytosis engulfment by white blood cells known as phagocytes.

Bacterial capsule slideshare

Bacterial capsules are formed primarily from long-chain polysaccharides with repeat-unit structures. A given bacterial species can produce a range of capsular polysaccharides CPSs with different structures and these help distinguish isolates by serotyping, as is the case with Escherichia coli K antigens. Capsules are important virulence factors for many pathogens and this review focuses on CPSs synthesized via ATP-binding cassette ABC transporter-dependent processes in Gram-negative bacteria. Bacteria utilizing this pathway are often associated with urinary tract infections, septicemia, and meningitis, and E. CPSs from ABC transporter-dependent pathways are synthesized at the cytoplasmic face of the inner membrane through the concerted action of glycosyltransferases before being exported across the inner membrane and translocated to the cell surface. A hallmark of these CPSs is a conserved reducing terminal glycolipid composed of phosphatidylglycerol and a polydeoxy-d-manno-octulosonic acid Kdo linker.

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Gram staining Shivang Patel. Special stains Dr. Why Capsule Staining? Introduction about protein and General method of analysis of protein. Sel Wina Agustina. Modified Ziehl-Neelsen Stain. Ft presentation. Basic iupac organic nomenclature Microbiology. Rings in the basal body rotate relative to each other causing the flagella to turn like a propeller. Effect of growth phase and capsule properties of the bacteria". Identification of bacteria. EubacteriaDefinitionBacteria are prokaryotic single-celled or BetseyCalderon Biochemical tests for identification of bacteria. Cell wall:Bacteria Mohit Hinsu.

Capsule of bacteria , composition ,function of capsule etc.

The difference between a capsule and a slime layer is that in a capsule polysaccharides are firmly attached to the cell wall, while in a slime layer, the glycoproteins are loosely attached to the cell wall. Staining techniques. Capsular Staining - 1. Cell wall:Bacteria. Structure of bacterial cell. Shylesh M. Fundamental Principal of Microbiology. Monotrichous - a single flagellumat one pole also called polar flagellum E. Culture media Namdeo Shinde. Thank YOU