key term - Channel protein

Definition

Channel proteins are integral membrane proteins that form pores or channels across the cell membrane, allowing specific molecules or ions to pass through by facilitated diffusion. These proteins are crucial for maintaining the cell's internal environment and play a vital role in signal transduction.

Related terms

Facilitated Diffusion:

A process by which substances move across cell membranes from an area of higher concentration to an area of lower concentration through carrier proteins or channel proteins, without energy input.

Membrane Permeability: The rate at which substances can pass through biological membranes, affected by factors such as membrane composition, size of molecule, and presence of specific channel proteins.

Ion Channels:

Specialized proteins that allow ions to move across cell membranes, contributing to various cellular processes including electrical signaling and maintaining electrochemical gradients