Lysozyme

Definition

Lysozyme is an enzyme found in the secretions of leukocytes (white blood cells) and platelets that destroys the cell walls of certain bacteria, contributing to the body's defense system against infection. It acts by breaking down the polysaccharides present in bacterial cell walls, leading to osmotic imbalance and cell lysis.

Related terms

Leukocytes:

White blood cells that are part of the immune system, responsible for fighting infections and foreign substances in the body.

Platelets:

Small blood cells involved in clot formation; they also release growth factors that aid in healing and play a role in innate immunity.

Bacterial cell wall: A rigid outer shell made of peptidoglycan that protects bacteria from environmental stresses and gives them their shape; it is the target of lysozyme action