General Biology - Biochemistry

ProteinsProteins

Proteins

• Building Blocks of living things

• Contain C, H, O

• and Nitrogen (N)

• Built from monomers called

• AMINO ACIDS

All amino acids have: • 1. A Carboxyl group

• 2. An amino group

• 3. “R” group This is a carbon chain that distinguishes one amino acid from another

How to build a protein…

What would we call two amino acids together?

What would we call many amino acids together?

Two types of Proteins

STRUCTURAL PROTEINS

Muscles

Collagen

Keratin

Membranes

FUNCTIONAL PROTEINS

Enzymes

Hormones

Antibodies

Hemoglobin

Food Sources of Protein

Structural Protein:

Collagen

keratin

fiberon

Functional proteins:

enzymes

how many different in proteins in the world?

• How many letters in the alphabet?

• How many words can you build?

• How many amino acids?

• How many proteins?

• Smallest proteins = about 500 amino acids

Soooooo……

• What are the building blocks of living things?

• What are the building blocks of proteins?

• What are the two types of proteins?

On to Nucleic Acids

Nucleic Acids

• Huge macromolecules• Information transfer • Contain C, H, O, N, Phosphorous• Made of monomers called

nucleotides • Examples include • DNA (deoxyribonucleic acid)• RNA (ribonucleic acid)

We will cover in depth in Genetics Unit not now

Phosphate

group

5 carbon

Deoxyribose sugar

Bases

Organic molecules

• Carbohydrates – energy –structure – glucose-mon,di, poly

• Lipids – energy –structure-fatty acids/glycerol – triglyc, phosp

• Proteins-structure – function – amino acids- polypeptides

• Nucleic Acids – information-nucleic acids- DNA, RNA