Lecture 4 Lipids and Proteins

Lecture 4 Lipids and Proteins - Figure 2-24 H C O H N O H...

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Lecture 4 Lipids Fats (triglycerides) Phospholpids Steroids Proteins Amino acid structure Peptide bonds Orders of protein structure 0
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Points for the Day Hydrophobic structure of lipids dictate their behavior in water Amino acid sequence ultimately determines the shape of a protein 0
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Set your PRS device This is for anyone who did not do this on Friday or anyone who had to reset the channel for another class Hit go, it should flask red/green Type in 79 After typing in 79, hit go again. You should get a solid green display.
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0
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Saturated and Unsaturated Bonds Single C-C bond Single pair of electrons shared Each C bound to three other atoms –Saturated Free rotation Double C-C bond 2 pairs of electrons shared Each C bound to two other atoms – unsaturated Fixed – no rotation 0
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Cis Trans 0 Cis form naturally occurring Trans occurs during hydrogenation process Physical properties of trans fats similar to saturated
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Dipeptide
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Unformatted text preview: Figure 2-24 H C O H N O H condensation Backbone: ---N C CN C CN C C------ By convention, proteins drawn with amino end on left (order of synthesis) Amino acids residues Note: this picture is backward relative to the convention below Orders of Protein Structure Primary Sequence of amino acids Determined by DNA code Peptide bonds - covalent Higher order structure based on interactions between amino acids in sequence Secondary interactions between peptide bonds Tertiary interactions between amino acid side chains Secondary Structure Based On Hydrogen Bonds Between groups in the peptide bonds Two major classes of secondary structure: -helices and -pleated sheets N = Blue C=black carbonyl C = gray O = red Helix Secondary Structures H-bonding Elements of peptide bond involved (not side chains)...
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This note was uploaded on 04/08/2008 for the course BIOL 301 taught by Professor Tepperman during the Winter '08 term at University of Cincinnati.

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Lecture 4 Lipids and Proteins - Figure 2-24 H C O H N O H...

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