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Proteins 2006-2007 Contains elements carbon, hydrogen, oxygen, and nitrogen Proteins: End in -ase.

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Presentation on theme: "Proteins 2006-2007 Contains elements carbon, hydrogen, oxygen, and nitrogen Proteins: End in -ase."— Presentation transcript:

1

2 Proteins

3 2006-2007 Contains elements carbon, hydrogen, oxygen, and nitrogen Proteins: End in -ase

4 Proteins Function: many different functions Cell structure, cell metabolism Fight disease, form bone, muscle … Protein shape determines protein function LOSE SHAPE=LOSE FUNCTION

5 Proteins amino acid amino acid – amino acid – amino acid – amino acid –  20 different amino acids Monomer subunits of proteins are amino acids held together by covalent “peptide” bonds “amino acid”=carbon with amino group (-NH 2 ) and carboxyl groups (-COOH) on opposite ends. = protein

6 Amino acid chains Proteins amino acids chained into a polymer

7 Protein Examples: Enzymes- act as catalyst (speed up) Hemoglobin- iron in red blood cells- carry oxygen Lactase- in intestine, helps you digest milk. Given to people with lactose intolerance, Insulin- regulates glucose in the blood Hair- helps with structure and keeps them healthy

8 Test for Proteins Buiret solution (turns bluish-purple)

9 Proteins Have 4 Levels of Organization A. Amino Acid chain B. Twisting/folding of the amino acid within the chain C. Folding of the actual chain D. If there are multiple chains, the chain rearrange themselves into specific arrangements.

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