Protein 2 Flashcards
What enzyme(s) are found in the pancreatic juice
Trypsin Chymotrypsin Elastase Carboxypeptidase A Carboxypeptidase B
What enzyme(s) are found in the intestinal cell
Aminopeptidase
Dipeptidylaminopeptidase
Tripeptidase
Endopeptidase
Break peptide bonds of nonterminal amino acids (within the molecule)
Exopeptidases
Break peptide bonds of amino acids on the outside of cell
Aminopeptidases
Cleave at amino end
What enzymes are Endopeptidases
Pepsin
Trypsin
Chymotrypsin
Elastase
Carboxypeptidases Cleave where?
Carboxyl end
What enzyme(s) are found in the stomach
Pepsin
Dipeptydylaminopeptidase cleaves what
Dipeptides
Tripeptidase cleaves what
Tripeptides
What enzymes are aminopeptidases
Dipeptidylaminopeptidase
Tripeptidase
What enzymes are exopeptidases
Carboxypeptidase A and B
What is one of the primary methods of transport for AA and peptides
Secondary active transport
•Amino acid transport in the apical and basolateral membranes of the enterocyte occur by:
Secondary active transport
Facilitated transport
What is secondary active transport
Na+, H+-, Cl–, and K+-dependent transport
Describe 3 steps how free AA are absorbed by intestinal cell
- Sodium binds to AA
- Brings AA inside cell
- Sodium pumped out by ATPase
Where is PEPT1 located
Apical membrane
How does PEPT1 bring in peptides
H gradient across enterocyte facilitates movement
Describe the three steps for PEPT1 transport
- Peptides are transported inside intestinal cell along with H
- H is pumped out and exchanged for Na
- ATPase pumps out Na in exchange for K at basolateral membrane
How much of protein is nitrogen
16%
How do you determine how much nitrogen is in a certain amount of protein
Protein (g) x .16 =
How do you determine how much protein is present in accordance to nitrogen levels
Nitrogen (g) x 6.25 =
Why is animal protein more efficient at stimulating protein synthesis than plant protein
The animal has more leucine
How can you minimize the gap between animal and plant protein
Eat more plant protein
