…Cholesterol is almost nonexistent in plants, and plant-derived sterols are collectively called phytosterols. Examples include stigmasterol (Figure 4) found in soybeans, and sitosterol found in cottonseed oil and soybean oil. Sterols from yeast and mushrooms are called mycosterols, and ergosterol (Figure 5) is an important molecule that is converted into vitamin D2 , which plays a role in the biotransport and deposition of calcium, when exposed to sunlight (ultraviolet rays). Physiologically important steroids include the following. … *Some of the terminology explanations that mention "ergosterol" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…コレステロールは植物にはほとんど存在せず,植物由来のステロールはフィトステロールphytosterolと総称され,ダイズなどに存在するスチグマステロール(図4)や綿実油やダイズ油中に存在するシトステロールがその例である。酵母やキノコ類のステロールはミコステロールmycosterolと呼ばれ,そのうちエルゴステロールergosterol(図5)は太陽光(紫外線)の照射によって,カルシウムの生体輸送と沈着に役割を果たすビタミンD2に転化する重要な分子である。 生理的に重要なステロイドには以下のものがある。… ※「ergosterol」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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