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Biochemistry

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Amino Acids, Proteins and Porphyrins

Question
1 out of 36
 

The following is false about Tryptophan



A Non essential amino acid

B Is both glucogenic and ketogenic

C Involved in niacin synthesis

D Involved in melatonin synthesis

Ans. A Non essential Amino acids

a. Nutritionally Essential Amino acids are: Arginine, Histidine, Isoleucine, Leucine, Lysine, Methionine, phenyl alanine, threonine, Tryptophan and valine.

b. Arginine and Histidineare Nutritionally “semi-essential amino acids, since, they synthesized at rates inadequate to support growth of children.

c. Tryptophan forms serotonin and melatonin

d. Tryptophan 5-Hydroxy tryptophan 5 —Hydroxytryptamine (Serotonin)

e.

f. Melatonin N-acetyl serotonin ------------------------------------------------------

g. Note melatonin is derivatives of Tryptophan while Melanin’s are polymers of Tyrosine catabolites 60mg Tryptophan form 1mg of Niacin.

Amino Acids, Proteins and Porphyrins Flashcard List

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