BIOC 3110 Lecture Notes - Lecture 14: Alpha-Amylase, Carboxypeptidase, Maltase

• School: University of Iowa
• Department: Biochemistry
• Course: BIOC 3110
• Professor: marcwold

Document Summary

Digestion breaks large biomolecules into smaller precursors: proteins- denatured by low ph (which is from a atp k+/h+ pump, and. P-type pump, which increases h concentration) and hcl. Proteins are hydrolyzed by proteases produces amino acids and oligopeptides in lumen. Pepsin is a protease enzyme in the stomach, that breaks peptide bonds of proteins: peptide bond is hydrolyzed (add h2o), leaving a carboxyl and amino group, most proteases in stomach are non/low specificity (ex. Oligopeptides get converted into amino acids, dipeptides, and tripeptides by peptidases, then specific transporters move them into the intestinal cell. Peptidases bring amino acids, tripeptides, and: carbohydrates (polysaccharides)- dipeptides into blood. Takes long chain glucose molecules and breaks into smaller monomer, dimer (maltose), trimer, and alpha limit dextrin. Cleaves at alpha-1,4 bonds only of starch and glycogen. Maltose and limit dextrin monosaccharides by maltase and alpha-dextrinase.