BMS 360 Lecture Notes - Sodium-Glucose Transport Proteins, Glut2, Symporter

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22 May 2014
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Digestion of complex structures polysaccharides, proteins, and triglycerides. Absorption of small molecules monosaccharides, amino acids, and monoglycerides/free fatty acids/glycerol. Glucose polymers (starch, glycogen) digest to disaccharides (maltose, sucrose, lactose) Sucrose + sucrase 1 glucose + 1 fructose. Lactose + lactase 1 glucose + 1 galactose. Triglyceride + lipase, colipase monoglyceride + free fatty acids. Exopeptidase digests terminal peptide bonds to release amino acids. Aminopeptidase + h2o breaks off amino acid @ h2n end. Carboxypeptidase + h2o breaks off amino acid @ cooh end. Glucose enters the cell with na+ on the sglt symporter and exists on glut2. Fructose enters on glut5 and exits on glut2. Small peptides are carried intact across the cell by transcytosis. Understand what is involved with digestion of lipids. Understand how digestion in small intestine affects stomach. Lipid droplets are coated by bile salts and phospholipids. Micelles are small disks with bile salts, phospholipids, fatty acids, cholesterol, and mono and diglycerides.

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