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Cellular Plasma Membrane (Plasma Membrane)

Target: Plasma Membrane
Molecular classification: Other

Overview

The cellular plasma membrane is a dynamic, complex lipid bilayer composed mainly of phospholipids, cholesterol, and embedded proteins. It maintains cellular integrity, regulates the entry and exit of substances, and facilitates communication and structural support. The fluid mosaic model describes its fluid nature, allowing components to move. The membrane plays a crucial role in cell signaling, cell transport, and maintaining homeostasis.

Other names: Cell membranePlasma membrane

Mechanism of action

Actions typically involve interactions with integral proteins for transport or signaling, or disruptions in membrane integrity (e.g., antibiotics).

Biological functions

Cellular integrityCell signalingStructural supportCell transportSelective permeability

Disease associations

Cancer (membrane alterations can impact cancer cell behavior)Infection (membrane components can be targets for pathogens)Other (e.g., neurodegenerative diseases where membrane lipid composition is altered)

Safety considerations

Altering membrane composition can have profound effects on cellular function and may lead to toxicity or functional impairment.

Biomarkers

Biomarkers for disease often relate to specific changes in membrane composition (e.g., altered cholesterol levels in neurodegenerative diseases).

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