PROTEINS HAVE MANY FUNCTIONS

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Presentation transcript:

PROTEINS HAVE MANY FUNCTIONS THEY MAKE UP THE STRUCTURAL AND FUNCTIONAL COMPONENTS OF CELLS/ OF THE BODY. -Every organism has 1000’s of unique proteins -Proteins are coded from DNA

LIKE MUSCLES

HAIR

AND NAILS

2. THEY ACT AS ENZYMES TO SPEED UP CHEMICAL REACTIONS.

3. SOME ARE HORMONES.

4. SOME ARE IMPORTANT IN IMMUNITY.

5. SOME ARE IMPORTANT IN TRANSPORT. THEY MAKE UP BLOOD HEMOGLOBIN.

PROTEIN STRUCTURE ALL PROTEINS CONTAIN C, H, O & N. AMINO ACIDS ARE THE BUILDING BLOCKS. THERE ARE 20 DIFFERENT AMINO ACIDS FOUND IN HUMANS. All aa’s have a central C that has a H, COOH (carboxyl group), an amine group (NH2), and an “R” group (a hydrocarbon chain of 2- ? Carbons).

BASIC STRUCTURE OF AN AMINO ACID H C COOH NH2 R

AMINO ACIDS THERE ARE 20 DIFFERENT AMINO ACIDS ____ ARE NONESSENTIAL, THE BODY CAN MAKE THEM ____ ARE ESSENTIAL, THEY MUST BE IN OUR DIET

Two amino acids = dipeptide Three or more amino acids = polypeptide Remember ase = enzyme

ENZYMES ARE GLOBULAR SHAPED PROTEINS THAT ACT AS BIOLOGICAL CATALYSTS. CATALYSTS SPEED UP REACTIONS.

CHARACTERISTICS OF ENZYMES ARE DESTROYED BY: HEAT STRONG ACIDS STRONG BASES THEY COME OUT OF A REACTION EXACTLY AS THEY WENT IN THEY ARE SPECIFIC, THEY CATALYZE A SINGLE REACTION