Proteins - 1/10/11 Amino Acids Proteins Building blocks of...

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1/10/11 1 Proteins Amino Acids Building blocks of proteins Amino Acid Variation There are 20 kinds of amino acids, with the same basic structure but different side chains The side chains are chemically varied (charge, size, hydrophobicity) Examples of amino acids Amino acids link together Sequence and Folding The sequence of amino acids determines what shape the protein will “fold” into Shape determines function
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1/10/11 2 Binding of a virus protein (left) and an antibody (right) Proteins are part of the plasma membrane Typical functions of membrane proteins Cytoskeleton attachment points “Self ” markers on cell surface Receptors Channels Gradients (review) Molecules move from more concentrated to less concentrated areas (Spontaneous force of physics) Passive Transport Active Transport
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1/10/11 3 Transport Spontaneous Requires Energy Active Transport Proteins You May Know Hemoglobin Keratin Enzymes Proteins that speed up chemical reactions
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Proteins - 1/10/11 Amino Acids Proteins Building blocks of...

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