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Steroid Hormones

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Summary

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Key Points

  • Steroid Hormones
    • Derived from cholesterol
      • Cholesterol is a type of lipid, so steroid hormones behave like fats
        • Steroids and Cholesterol have a 4-ring structure
      • Formed in the Smooth Endoplasmic Reticulum
        • Also produced in mitochondria to some extent
    • Hydrophobic (fat-soluble)
      • Require carrier protein to move in blood
    • Pass through cell membrane
      • Act as primary messengers on receptors inside cell
        • Receptors may be in the cytoplasm or nucleus
      • Affect transcription/translations of proteins