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Small Intestine - Anatomy & Physiology (view source)
Revision as of 09:17, 25 July 2008
, 09:17, 25 July 2008→Protein Digestion and Absorption
***Amino acids within the same group compete with each other for the transport molecule.
***Amino acids within the same group compete with each other for the transport molecule.
***Amino acids are transported with sodium through a symport (like glucose), where amino acids travel up their concentration gradient and sodium travels down its concentration gradient.
***Amino acids are transported with sodium through a symport (like glucose), where amino acids travel up their concentration gradient and sodium travels down its concentration gradient.
*Di-,tri- and oligo- peptidases are absorbed by the γ glutamyl transfer cycle.
*Di-,tri- and oligo- peptides are absorbed by the γ glutamyl transfer cycle.
**γ Glutamyl transferase spans the enterocyte membrane and combines glutathione from the inside of the cell with a di-,tri- or oligo-peptide from the intestinal lumen forming a γ-glu-aa complex which is transported into the cell. The aas are then released and glutathione is recombined to enter the process again.
**γ Glutamyl transferase spans the enterocyte membrane and combines glutathione from the inside of the cell with a di-,tri- or oligo-peptide from the intestinal lumen forming a γ-glu-aa complex which is transported into the cell. The aas are then released and glutathione is recombined to enter the process again.