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URL: https://ms.wikipedia.org/wiki/Sterol

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Sterol

Daripada Wikipedia, ensiklopedia bebas.

Sterol ialah sebatian organik dengan formula C17H28O</br> C17H28O</br> C17H28O, yang molekulnya diperoleh daripada gonana dengan menggantikan atom hidrogen pada kedudukan 3 oleh kumpulan hidroksil. Oleh itu, ia merupakan alkohol gona. Secara umumnya, sebarang sebatian yang mengandungi struktur gona, kumpulan berfungsi tambahan dan/atau sistem gelang diubah suai yang diperoleh daripada gona dipanggil steroid. Oleh itu, sterol ialah subkumpulan steroid. Ia berlaku secara semula jadi dalam kebanyakan eukariota, termasuk tumbuhan, haiwan, dan kulat, dan juga boleh dihasilkan oleh sesetengah bakteria (namun berkemungkinan dengan fungsi yang berbeza).[1][2] Jenis sterol haiwan yang paling biasa ialah kolesterol, yang penting untuk struktur membran sel, dan berfungsi sebagai pendahulu kepada vitamin larut lemak dan hormon steroid.

Walaupun secara teknikal alkohol, sterol diklasifikasikan oleh ahli biokimia sebagai lipid ( lemak dalam erti kata yang lebih luas).

Rangka gona, dengan IUPAC mengesyorkan penomboran atom karbon
  1. ^ "Sterol Synthesis in Diverse Bacteria". Frontiers in Microbiology. 7: 990. 24 June 2016. doi:10.3389/fmicb.2016.00990. PMC 4919349. PMID 27446030.
  2. ^ "Evolution of bacterial steroid biosynthesis and its impact on eukaryogenesis". Proceedings of the National Academy of Sciences of the United States of America. 118 (25): e2101276118. June 2021. doi:10.1073/pnas.2101276118. PMC 8237579. PMID 34131078.
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