chapter 5 - Chapter 5 Proteins More Than Just Meat and...

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Chapter 5 Proteins: More Than Just Meat and Muscle
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What is a protein? Predominant structural and functional material in every cell
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Major structural component of Muscles Immunity Hair Nails Needed for most body functions: enzymes, hormones, neurotransmitters
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What makes a protein?
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Building blocks A Protein is a long chain of amino acids Each protein has a different amino acid sequence There are 20 different amino acids, 9 of which are essential The sequence of the amino acids determines the type of protein
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Amino acid are like digits 0 1 2 3 4 5 6 7 8 9 607- 415 9723 Aunt Helen 607- 415 9732 Police Station 607 415 9722 Not in service
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So substituting one amino acid for another produces a totally different protein Diseases
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Amino acids Each amino acid has: an amino group an acid group a hydrogen atom a side group. It is the side group that makes each amino acid unique.
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HR An amino acid
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R Groups are Unique
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Protein Bonds= Peptide Bonds
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Protein Organization Primary structure Sequence of amino acid ( determines protein shape ) Secondary structure Bends and folds held together by bonds (interaction between H and O ions of different amino acids) ©
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Tertiary structure 3D shape ( dictates function ), interaction between other ions and molecules Quaternary structure Two or more proteins interacting together Important when protein needs to be active only at certain times and can turn off by separating
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Determines function Determines activity Determines shape
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Protein denaturation
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Essential and non-essential amino acids
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Phenylalanine Valine Tryptophan Threonine Isoleucine Methionine Histidine Leucine Lysine
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chapter 5 - Chapter 5 Proteins More Than Just Meat and...

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