Slime layer
Slime Layer
The Slime Layer (pronunciation: /slaɪm leɪər/) is a loosely bound extracellular layer in bacteria, composed primarily of polysaccharides, proteins, and DNA.
Etymology
The term "Slime Layer" is derived from the Old English word "slim," meaning sticky substance, and the Middle English word "layer," meaning a sheet or stratum of a substance.
Definition
The Slime Layer is a protective layer that aids in bacterial adherence to environmental surfaces and protects the bacteria from desiccation and antibiotics. Unlike the capsule, the slime layer is easily removed and is not always present in some bacteria.
Function
The primary function of the Slime Layer is to protect the bacteria from environmental stressors. It also aids in the bacteria's adherence to surfaces, which is crucial for the formation of biofilms. Biofilms are communities of bacteria that are embedded in a self-produced matrix of extracellular polymeric substances (EPS), which is primarily composed of the slime layer.
Related Terms
- Biofilm: A community of bacteria embedded in a self-produced matrix of extracellular polymeric substances (EPS).
- Capsule: A more rigid and tightly bound extracellular layer in bacteria, compared to the slime layer.
- Extracellular Polymeric Substances (EPS): The substances that make up the matrix in which biofilm bacteria are embedded.
- Desiccation: The process of extreme drying, from which the slime layer protects the bacteria.
External links
- Medical encyclopedia article on Slime layer
- Wikipedia's article - Slime layer
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