What are some examples of functional and structural proteins?

Functional proteins perform specific functions within an organism, while structural proteins provide support and strength to cells and tissues. Here are some examples of both:

Functional proteins:

Enzymes: Catalysts for biochemical reactions. Examples include amylase (breaks down starch), catalase (breaks down hydrogen peroxide), and ATP synthase (involved in ATP production).
Antibodies: Part of the immune system, antibodies recognize and bind to foreign substances (antigens) to help neutralize them.
Hormones: Signaling molecules that regulate various physiological processes. Examples include insulin (regulates blood sugar levels), adrenaline (involved in the fight-or-flight response), and growth hormone (regulates growth and development).
Hemoglobin: Found in red blood cells, hemoglobin transports oxygen from the lungs to tissues throughout the body.
Chlorophyll: Found in chloroplasts of plants, chlorophyll absorbs light energy during photosynthesis.
Structural proteins:

Collagen: The main component of connective tissues such as tendons, ligaments, and skin. Provides strength and structure.
Keratin: Found in hair, nails, and the outer layer of skin (epidermis), keratin provides toughness and protection.
Actin and myosin: Found in muscle cells, actin and myosin are involved in muscle contraction and movement.
Tubulin: Forms microtubules, which are part of the cytoskeleton and play roles in cell shape, intracellular transport, and cell division.
Elastin: Found in connective tissues, elastin provides elasticity and resilience to tissues like blood vessels and skin.
These are just a few examples, and there are many more functional and structural proteins with diverse roles in living organisms.