Types of Membrane Proteins

Types of Membrane Proteins - Types of Membrane Proteins:...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Types of Membrane Proteins: Channel Proteins: create transient hydrophilic channel for small molecules & ions to 15 Carrier Proteins: selectively interact with small molecules or ions to assist them across the membrane Cell Recognition Protein: Cell Identity; individual-specific groups of proteins on extracellular side of membrane (e.g.: MHC/HLA (Human Leukocyte Antigen) – important to match with donor to avoid rejection of transplanted organ or tissue) Receptor Protein: Interacts with specific molecule to transmit some type of signal or communication (electrical, chemical or contact) between cells (e.g.: hormone receptors) Enzymatic Protein: Catalyzes (speeds up) some specific reaction which results in a cellular response Plasma Membrane is semipermeable and selectively permeable: some molecules may pass through freely (e.g.: water); others must be assisted across Gradients across plasma membrane : - concentration gradient : difference in concentration in a molecule from one place to another
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

Types of Membrane Proteins - Types of Membrane Proteins:...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online