Dictionary > Bacteriolysin


noun, plural: bacteriolysins
(1) A specific antibody that combines with bacterial cells (antigens) and, in the presence of complement, causes lysis or dissolution of the cells
(2) A type of bacteriocin with bacteriolytic activity
Antibodies are glycoproteins produced by B cells. Their main function is to protect the body from foreign agents (called antigens) through an immune response against the antigens. There are different types of antibodies. They may be grouped based on their mode of action or by the reactions produced with the corresponding antigens. Some of these groups are agglutinins, bacteriolysins, haemolysins, opsonins, and precipitins. An antibody that causes lysis and disintegration of bacteria is called bacteriolysin. In this regard, a bacteriolysin is the specific antibody that combines with antigens, such as bacterial cells. It has derived its name from its effect on bacterial cells. In particular, it combines with a bacterial cell and then causes lysis. As a result, the bacterial cell is destroyed. One possible mechanism is by deregulating lipoteichoic acid or phospholipids of Gram (+) or Gram (-) bacteria, respectively.
Bacteriolysins may also be a subclass of bacteriocins, i.e. a larger group of proteinaceous or peptidic toxins produced by bacteria and can inhibit the growth of closely-related bacteria or of another bacterial genera. In particular, the class III type a include bacteriolysins such as lysostaphin.1 Lysotaphin is a peptide produced by Staphylococcus and is capable of hydrolyzing the cell wall of other species of Staphylococcus bacteria (e.g. S. aureus).
See also:


1 Bastos, M. do C. de F., Coutinho, B. G., & Coelho, M. L. V. (2010). Lysostaphin: A Staphylococcal Bacteriolysin with Potential Clinical Applications. Pharmaceuticals, 3(4), 1139–1161. http://doi.org/10.3390/ph3041139

You will also like...

Biological Viruses
Biological Viruses

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

Growth and Plant Hormones
Growth and Plant Hormones

Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

Plant biology
Plant Biology

Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

Homeostasis by water regulation
Homeostasis of Organism Water Regulation

Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..

Human Nervous System
The Human Nervous System

The nervous system is essentially a biological information highway. This tutorial gives an overview of the nervous syste..

primitive arthropods

The arthropods were assumed to be the first taxon of species to possess jointed limbs and exoskeleton, exhibit more adva..