Translations:Cytochrome P450/27/ja: Difference between revisions

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Created page with "====ステロイドホルモン==== thumb|400px|[[Steroidogenesis/ja|ステロイド生成、シトクロームP450酵素が行う酵素活性の多くを示す。HSD:ヒドロキシステロイド脱水素酵素。]] シトクロムP450酵素のサブセットは、副腎生殖腺、および末梢組織によるステロイドホルモンの合成(steroidogenesis/ja|ステロ..."
 
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Latest revision as of 09:07, 16 March 2024

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Message definition (Cytochrome P450)
====Steroid hormones====
[[File:Steroidogenesis.svg|thumb|400px|[[Steroidogenesis]], showing many of the enzyme activities that are performed by cytochrome P450 enzymes. HSD: Hydroxysteroid dehydrogenase.]]
A subset of cytochrome P450 enzymes play important roles in the synthesis of [[steroid hormone]]s ([[steroidogenesis]]) by the [[adrenal gland|adrenal]]s, [[gonad]]s, and peripheral tissue:
* [[CYP11A1]] (also known as P450scc or P450c11a1) in adrenal [[mitochondrion|mitochondria]] affects "the activity formerly known as 20,22-desmolase" (steroid 20α-hydroxylase, steroid 22-hydroxylase, cholesterol [[Side chain|side-chain]] scission).
* [[CYP11B1]] (encoding the protein P450c11β) found in the [[inner mitochondrial membrane]] of [[adrenal cortex]] has steroid 11β-hydroxylase, steroid [[18-hydroxylase]], and steroid 18-methyloxidase activities.
* [[CYP11B2]] (encoding the protein P450c11AS), found only in the mitochondria of the adrenal [[zona glomerulosa]], has steroid 11β-hydroxylase, steroid 18-hydroxylase, and steroid 18-methyloxidase activities.
* [[CYP17A1]], in endoplasmic reticulum of adrenal cortex has steroid 17α-hydroxylase and 17,20-lyase activities.
* [[CYP21A2]] (P450c21) in adrenal cortex conducts [[21-hydroxylase]] activity.
* [[CYP19A]] (P450arom, [[aromatase]]) in [[endoplasmic reticulum]] of [[gonads]], [[brain]], [[adipose tissue]], and elsewhere catalyzes [[aromatization]] of [[androgens]] to [[estrogens]].

ステロイドホルモン

ステロイド生成、シトクロームP450酵素が行う酵素活性の多くを示す。HSD:ヒドロキシステロイド脱水素酵素。

シトクロムP450酵素のサブセットは、副腎生殖腺、および末梢組織によるステロイドホルモンの合成(ステロイド生成)において重要な役割を果たしている: