Periplasm
Periplasm
Periplasm (/pɛrɪplæzəm/; from the Greek peri, meaning "around" and plasma, meaning "something molded") is a concentrated gel-like matrix in the space between the inner membrane and the bacterial outer membrane in Gram-negative bacteria.
Etymology
The term "Periplasm" is derived from the Greek words "peri", meaning "around", and "plasma", meaning "something molded". It was first used in the context of biology in the mid-20th century to describe the space between the inner and outer membranes of Gram-negative bacteria.
Function
The periplasm is a site of many proteins that are important for bacterial pathogenesis, including the degradation of compounds that the bacterium uses for nutrients, the detection of environmental signals and changes, and the building of the bacterium's structure.
Components
The periplasm contains a variety of proteins, including enzymes, nutrient transporters, and chaperones. These proteins perform a wide range of functions necessary for the survival and virulence of Gram-negative bacteria.
Related Terms
External links
- Medical encyclopedia article on Periplasm
- Wikipedia's article - Periplasm
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