proteins
Post on 13-Jun-2015
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Proteins
The Building Blocks of Life
Protein in your Body
• Muscle• Skin• Hair• Fingernails• Enzymes
Amino Acid Structure
20 Different Amino Acids
• Variations depending on R-Group or side chain
Peptide Bonds
• Formed by dehydration synthesis
Protein Folding
• Primary Structure – Amino Acid Sequence
Protein Folding
• Secondary Structure – amino acids fold into sheets and helix shapes
Protein Folding
• Tertiary Shape – Protein compacts and twists on itself
Protein Folding
• Quarternary Structure – Several proteins combine together
• Final useful protein
Enzymes
• Organic catalysts that change the rate of reactions
• Act upon substrate• Specific to the reaction• “Climate” of maximum
effiency• Active site is a portion of the
whole enzyme
Denatured
• Protein structure can be changed by– Heat– pH
• Wont work anymore
Lock and Key model
• Enzymes either join molecules together or break them apart
• Specific to reaction
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