UW-Madison BIOLOGY 101 - Proteins, Lipids, and Enzymes (2 pages)

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Proteins, Lipids, and Enzymes

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Proteins, Lipids, and Enzymes


Lecture number:
Lecture Note
University of Wisconsin, Madison
Biology 101 - Zoology 101: Animal Biology
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Zoology 101 Animal Biology Last Lecture Outline 1 What makes up animals 2 Water Water and its bonds 3 Organic Macromolecules functional groups reactions how molecules come together 4 Carbs Lecture3 Current Outline 1 Proteins 4 structure levels Enzymes 2 Lipids Sterols Proteins Monomer animo acid R group makes properties different on each molecule Amino acid can be charged Charged particles dissolves in water OH will form hydrogen bonds with water soluble Hydrophilic water loving Hydrophobic water hating not water soluble 2 monomer dipeptide bond polypeptide many amino acids ends amino terminus carboxy terminus Structures Protein can t function unless in proper shape Primary linked serious of amino acids with unique structure very large amount of combinations Secondary localized folding created by H bonding between non R groups Alpha helix other atoms that form bonds not at the peptide telephone cord Beta pleated sheet fold over and ends have attraction ex Spider silk Tertiary 3D shape interactions between R Groups globular protein fold into a specific shape ionic bonds Van deer Waals attractions weak Quaternary aggregation of 2 or more polar peptides ATP synthesis hemoglobin 4 polypeptides Enzymes Proteins catalyze chemical reactions reusable biological Substrate enzyme enzyme substrate complex induced fit broken into monosaccharide products Products and enzyme physical condition effects enzyme function proteins get denatured temperature and pH affect Lipids hydrophobic functions as hormones energy source component in cell membrane Sterols hormones estrogen testosterone membrane structure cholesterol 4 ring structure very hydrophobic Cholesterol moves through blood as lipoprotein complex covered in phospholipids in order to moce

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