Protein Flashcards
What are the 3 essential amino acid
Valine
Leucine
Isoleucine
How does the compound composition of protein differ to carbs or fats
Amino acid have nitrogen
What bonds are between amino acids
Peptide bond
How many essential amino acid
9
How many non essential amino acid
11
Protein function
enzyme
Antibodies (Immunity )
Body tissue
Hormones
How to measure protein
Muscle biopsy
Isotope infusion
What are the different protein types
Casein
Whey
Concentrate
Isolate
What is casein
Slow digesting protein
Example of casein
Milk
When should casein be taken
What is whey protein
Fast digesting protein
What is concentrate
Non protein components
What is isolate
NO non protein components
What are High quality protein + examples
Contain all essential amino acids
Meat fish eggs dairy
What are low quality proteins + example
Do not contain all of the essential amino acids
Plant based
Grains nuts seed
Example of
What are the key enzymes involved in breaking down polypeptidesin small intestine
Trypsin
Chymotrypsin
Carboxylpeptidase
What is transamination
Protein broken down into energy
What is leucine
Amino acid that triggers muscle protein synthesis
Drive for muscle synthesis
Leucine threshold
What is it called when muscle fibres increase in size due to muscle protein synthesis and exercise synthesis
Muscle hypertrophy
What does mps stand for
Muscle protein synthesis
What does mpb stand for
Muscle protein breakdown
What is the term used to describe the between MPS and MPB
NPB
What does NPB stand for
Net protein balance
How much protein should we consume
20-25g
How often should we consume protein
3-4 hours
Transamunation
Why is ammonia removed
It’s a toxin to the brain
How much protein can we store in our free amino acid pool
3G per kg of body mass
What is an amino acid pool
What enzyme breaks down protein in the stomach
Pepsin
What is protein broken down into in the stomach
Polypeptide
Where does the polypeptide move to after being broken down
Small intestine
What are the polypeptides broken down into in the small intestine
Amino acid
Dipeptide
Tripeptide
Where does the amino acid,dipeetide and tripe tide go to after bein in the stomach
Free amino acid pool
What is deamination
Removal of nitrogen
What cycle does ammonia get removed by
Urea cycle
Why don’t we use Oreo tin as a form of energy
They enter at different stages in the kerb cycle
resulting in less ATP
less efficient
What is transamunation
Transfer of nitrogen
In the process of transamunation what does the amino acid bind with
AlphaKetogluterate
What enzyme is involved in the breakdown of poly peptide in the small intestine
Trypsin
What is a free amino acid pool
A storage tank
What enzyme reacts with amino acid + alphaketoglutinate
Aminotransferase
What product do we get from amino acid + alpha ketoglutinate
Keto acid
Glutamate
What product gets the nitrogen
Glutamate
Where does the keto acid go
Kreb cycle
What happens to the glutamate
Undergoes deamination
Role of the R group in protein
Determine where it goes in the kreb cycle
In deamination where is the first place glutamate goes to
The liver
In the liver what happens to glutamate
Remove nitrogen
What is formed as a by product when nitrogen is remove from glutamate
Ammonia