Stéaróideach

Samhail mhaide den stéaróideach lanosterol. Léiríonn líon iomlán na gcarbón a bhunús trítheirpéinóideach.

Is éard is stéaróideach ann ná lipid theirpéinóideach arb é a príomhthréith a chroí steréin agus grúpaí feidhmiúla breise. Tá a croí comhdhéanta de struchtúr carbóin de cheithre fáinní comhleáite: trí fáinní cioglaiheacsán agus fáinne amháin cioglaipeintáine. Athraíonn na stéaróidigh de réir na grúpaí feidhmiúla a ghabhann leis na fáinní seo agus staid ocsaídithe na bhfáinní.

Tarlaíonn raon leathan de chomhdhúile ceimiceacha go nádurtha i bplandaí, in ainmhithe, agus i bhfungais.

Naisc sheachtracha

• Michael W. King's Medical Biochemistry. Steroids and retinoids are both terpenes that are hydrophobic, pass through cell membranes and bind to intracellular receptors. However, retinoic acid is not a steroid because it does not have the defining ring structure. See: Steroids and Related Hydrophobic Molecules.
• "Biochemistry" by Jeremy M. Berg, John L. Tymoczko and Lubert Stryer (2002) W. H. Freeman and Co. steroid topics in this
• Insidermedicine in 60 - Trans Fats, Steroid Rage, Calcium and Needlesticks -- Video: Insidermedicine.com's Dr. Sanjay Sharma on Trans Fats, Steroid Rage, Calcium and Needlesticks.
• Nomenclature of Steroids Home Page at Queen Mary University of London.
• Steroid abbreviations at ISAS (page now defunct, web archive version)
• http://arbl.cvmbs.colostate.edu/hbooks/pathphys/endocrine/basics/steroidogenesis.html