Isoquinoline alkaloids are derived from which amino acid?

Study for the Manor Preboards Module 2 Test. Use flashcards and multiple choice questions that include hints and explanations. Prepare thoroughly for your exam!

Multiple Choice

Isoquinoline alkaloids are derived from which amino acid?

Explanation:
Isoquinoline alkaloids come from tyrosine. In plants, tyrosine is converted into tyrosine-derived units such as tyramine and 4-hydroxyphenylacetaldehyde, which then combine through enzyme-catalyzed steps to build the benzylisoquinoline core (norcoclaurine). From this core, a sequence of modifications—methylations, hydroxylations, and oxidations—yields the diverse isoquinoline alkaloids. This pathway is distinct from routes starting with tryptophan (which lead to indole alkaloids) or from other amino acids like threonine or phenylalanine.

Isoquinoline alkaloids come from tyrosine. In plants, tyrosine is converted into tyrosine-derived units such as tyramine and 4-hydroxyphenylacetaldehyde, which then combine through enzyme-catalyzed steps to build the benzylisoquinoline core (norcoclaurine). From this core, a sequence of modifications—methylations, hydroxylations, and oxidations—yields the diverse isoquinoline alkaloids. This pathway is distinct from routes starting with tryptophan (which lead to indole alkaloids) or from other amino acids like threonine or phenylalanine.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy