Nutrition - Proteins lecture 2 (for exam #1)
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9 Terms
Oligopeptide
4-10 bonds formed
Polypeptide
more than 10 bonds formed
Digestion of proteins
HCL activation of pepsin to pepsinogen occurs in the stomach, followed by pancreatic enzymes being released in the small intestine, electrolytes finish digestion in the blood
Amino Acid pool
Supply of amino acids that can be ready to use for synthesis and metabolic processes
Protein Synthesis transcription
DNA helix unwinds in the nucleus and mRNA copies the DNA’s instructions for making the protein, transcribing from DNA to RNA format
Protein synthesis translation
tRNA retrieves the correct AAs for the proteins to deliver to the ribosome. rRNA then assembles the AAs in correct order.
what happens if a non-essential AA is missing during protein synthesis?
the cell will make it or obtain it from the AA pool in the liver
what happens if an essential AA is missing during protein synthesis?
the body may break down its own protein to supply the missing AA, or synthesis stops