Overview of Major Chemical Classes of Hormones
Overview of Major Chemical Classes of Hormones
Hormone type | How they are made | Amount stored in endocrine cells | Mechanism of action | Identical structure between species? | Examples |
|---|---|---|---|---|---|
Protein/polypeptide | Gene transcription/translation | High | Cell surface receptor | Variable; some yes, some no | ACTH, insulin |
Steroid | Conversion from cholesterol | Low | Intracellular receptors | Yes | Estrogen, cortisol |
Modified amino acids | Modification of 1 or 2 amino acids (tyrosine) | High Moderate | Intracellular receptors Cell surface receptors | Yes Yes | Thyroxine Catecholamines |