Amino Acid Biosynthesis - Biosynthesis of Chorismate

The video tutorial by Kevin discusses the biosynthesis of chorismate, a precursor to aromatic amino acids like phenylalanine, tyrosine, and tryptophan. It covers the pathway starting from phosphoenolpyruvate and erythrose 4-phosphate, detailing the enzymatic reactions leading to chorismate formation. The tutorial highlights the inability of humans to synthesize these amino acids from scratch, emphasizing their essential nature. The video also touches on the role of these amino acids in neurotransmitter and hormone production.

What is the primary role of chorismate in the biosynthesis process discussed in the video?

• It acts as a final product.

• It serves as a precursor to aromatic amino acids.

• It is used to synthesize carbohydrates.

• It functions as a coenzyme.

Which two molecules are the major precursors for chorismate?

• Lactate and citrate

• Acetyl-CoA and oxaloacetate

• Phosphoenolpyruvate and erythrose four phosphate

• Glucose and fructose

What is the role of NAD in the enzyme dehydrogenase synthase?

• It is not involved in the reaction.

• It is converted to NADH.

• It is a covalently bound prosthetic group.

• It acts as a substrate.

Which enzyme is responsible for converting 3D hydro Schick inmate into shikimate?

• Shikimate kinase

• Chicka mate dehydrogenase

• Dehydrogenase synthase

• Chorismate synthase

What is the significance of the double bonds in the formation of aromatic rings?

• They are used to form linear chains.

• They are not necessary for aromaticity.

• They provide stability to the molecule.

• They are required to generate aromaticity.

Why can't humans synthesize phenylalanine, tyrosine, and tryptophan from scratch?

• The pathway does not occur in higher order eukaryotes.

• Humans can synthesize them from carbohydrates.

• These amino acids are not needed in humans.

• Humans lack the necessary enzymes.

Which neurotransmitter is derived from tryptophan in humans?

• Serotonin

• Dopamine

• Histamine

• Adrenaline