1
Polypeptides
Pancreas
Stomach
Esophagus
Pepsin enzyme:
breaks
protein’s
polypeptide bonds
f
o
o
d
2
Small
Intestine
Large
Intestine
Liver
Pancreas
• Pancreas
secretes: Pepsin,
Trypsin, &
Chymotrypsin into
the small intestine.
• Peptides still
being broken down,
enter the
small intestine, where
proteins finish digestion.
3
Pepsin,
Trypsin,
Chymo
-
trypsin
Amino
acids
Small
Intestine
• Pepetide
bonds are
cleaved into
smaller units.
• Next,
Carboxypeptidase
(Brush border enzyme)
spilts peptides
into individual
amino acids
.
4
Liver
Small
Intestine
Amino
acids
Amino
acids
•
Amino acids
are
absorbed by the
Jejunum (midesection
of small intestine).
• In the bloodstream,
amino acids
travel to the liver.
• Liver regulates
amino acids
distribution to cells.
1
Polypeptides
Pancreas
Stomach
Esophagus
Pepsin enzyme:
breaks protein’s
polypeptide bonds
f
o
o
d
2
• Pancreas secretes:
Pepsin, Trypsin, & Chymotrypsin
into the small intestine.
• Peptides still being broken down,
enter the small intestine, where
proteins finish digestion.
Small Intestine
Large Intestine
Liver
Pancreas
3
• Pepetide bonds are cleaved
into smaller units.
• Next, Carboxypeptidase
(Brush border enzyme) spilts
peptides into individual
amino acids
.
Pepsin,
Trypsin,
Chymo
-
trypsin
Amino acids
Small
Intestine
4
Liver
•
Amino acids
are absorbed by the Jejunum
(midesection of small intestine).
• In the bloodstream,
amino acids
travel to the Liver.
• Liver regulates
amino acids
distribution to cells.
Small Intestine
Amino acids
Amino
acids
Protein digestion
How food becomes amino acids
Proteins from food are not bioavailable until they've been returned to individual amino acids. Proteins in your diet resupply cells with the amino acids needed to build proteins. The importance of eating protein is to resupply your body’s amino acids.
The individual amino acids are absorbed into the bloodstream from the middle section of the small intestine. Then they travel to the liver where their dispersal is regulated.