**Figure 5.** Figure 1. The biosynthesis of melatonin.

Description

Biosynthetic pathway of melatonin from tryptophan is displayed, showing the sequential enzymatic steps through serotonin N-acetyltransferase and hydroxyindole-O-methyltransferase.

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Figure 6

Melatonin and its metabolites including 6-hydroxymelatonin, AFMK, and AMK are structurally depicted, illustrating the biotransformation cascade.

diagram

Figure 7

Mechanisms by which melatonin enhances lung cancer cell sensitivity to berberine are diagrammed, showing synergistic effects on apoptotic and autophagic pathways.

diagram

Figure 5

Diagram

663 × 446px · 92,2 Kio

Source Paper

Dietary Sources and Bioactivities of Melatonin.

Nutrients (2017)

PMID: 28387721

DOI: 10.3390/nu9040367

Cite This Figure

![Figure 5: Biosynthetic pathway of melatonin from tryptophan is displayed, showing the sequential enzymatic steps through serotonin N-acetyltransferase and hydroxyindole-O-methyltransferase.](https://pdfs.citedhealth.com/figures/28387721/203.png)

> Source: Xiao Meng et al. "Dietary Sources and Bioactivities of Melatonin.." *Nutrients*, 2017. PMID: [28387721](https://pubmed.ncbi.nlm.nih.gov/28387721/)

<figure>
  <img src="https://pdfs.citedhealth.com/figures/28387721/203.png" alt="Biosynthetic pathway of melatonin from tryptophan is displayed, showing the sequential enzymatic steps through serotonin N-acetyltransferase and hydroxyindole-O-methyltransferase." />
  <figcaption>Figure 5. Biosynthetic pathway of melatonin from tryptophan is displayed, showing the sequential enzymatic steps through serotonin N-acetyltransferase and hydroxyindole-O-methyltransferase.<br>  Source: Xiao Meng et al. "Dietary Sources and Bioactivities of Melatonin.." <em>Nutrients</em>, 2017. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/28387721/">28387721</a></figcaption>
</figure>

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