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Adv Nutrition Proteins > Protein 2 > Flashcards

Protein 2 Flashcards

1
Q

What enzyme(s) are found in the pancreatic juice

A 
Trypsin
Chymotrypsin 
Elastase
Carboxypeptidase A
Carboxypeptidase B
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2
Q

What enzyme(s) are found in the intestinal cell

A

Aminopeptidase
Dipeptidylaminopeptidase
Tripeptidase

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3
Q

Endopeptidase

A

Break peptide bonds of nonterminal amino acids (within the molecule)

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4
Q

Exopeptidases

A

Break peptide bonds of amino acids on the outside of cell

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5
Q

Aminopeptidases

A

Cleave at amino end

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6
Q

What enzymes are Endopeptidases

A

Pepsin
Trypsin
Chymotrypsin
Elastase

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7
Q

Carboxypeptidases Cleave where?

A

Carboxyl end

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8
Q

What enzyme(s) are found in the stomach

A

Pepsin

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9
Q

Dipeptydylaminopeptidase cleaves what

A

Dipeptides

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10
Q

Tripeptidase cleaves what

A

Tripeptides

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11
Q

What enzymes are aminopeptidases

A

Dipeptidylaminopeptidase

Tripeptidase

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12
Q

What enzymes are exopeptidases

A

Carboxypeptidase A and B

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13
Q

What is one of the primary methods of transport for AA and peptides

A

Secondary active transport

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14
Q

•Amino acid transport in the apical and basolateral membranes of the enterocyte occur by:

A

Secondary active transport

Facilitated transport

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15
Q

What is secondary active transport

A

Na+, H+-, Cl–, and K+-dependent transport

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16
Q

Describe 3 steps how free AA are absorbed by intestinal cell

A
  1. Sodium binds to AA
  2. Brings AA inside cell
  3. Sodium pumped out by ATPase
17
Q

Where is PEPT1 located

A

Apical membrane

18
Q

How does PEPT1 bring in peptides

A

H gradient across enterocyte facilitates movement

19
Q

Describe the three steps for PEPT1 transport

A
  1. Peptides are transported inside intestinal cell along with H
  2. H is pumped out and exchanged for Na
  3. ATPase pumps out Na in exchange for K at basolateral membrane
20
Q

How much of protein is nitrogen

A

16%

21
Q

How do you determine how much nitrogen is in a certain amount of protein

A

Protein (g) x .16 =

22
Q

How do you determine how much protein is present in accordance to nitrogen levels

A

Nitrogen (g) x 6.25 =

23
Q

Why is animal protein more efficient at stimulating protein synthesis than plant protein

A

The animal has more leucine

24
Q

How can you minimize the gap between animal and plant protein

A

Eat more plant protein

Adv Nutrition Proteins (9 decks)

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