James Lind showed that its deficiency causes scurvy.
This molecule is a coenzyme in the conversion of tryptophan to serotonin. It is a cofactor in the conversion of dopamine to norepinephrine. Lysine and proline are hydroxylated in order to produce collagen by this molecule, which was discovered by King and Szent-Györgi (sent-JUR-jee). Linus Pauling's advocacy of megadoses of it has perhaps led to the widespread belief that it wards off the common cold. James Lind showed that its deficiency causes scurvy. For 10 points, name this vitamin found in citrus fruits.
This molecule is a coenzyme in the conversion of tryptophan to serotonin.
Vitamin {C} [or {L}-{ascorbic acid}; or {L}-{ascorbate}]