{"id":67886,"date":"2025-11-11T22:42:39","date_gmt":"2025-11-11T22:42:39","guid":{"rendered":"https:\/\/psychologydictionary.ae\/methylation\/"},"modified":"2025-11-11T22:42:39","modified_gmt":"2025-11-11T22:42:39","slug":"methylation","status":"publish","type":"post","link":"https:\/\/psychologydictionary.ae\/fr\/methylation\/","title":{"rendered":"M\u00e9thylation"},"content":{"rendered":"<p>un petit fragment d\u2019une mol\u00e9cule (groupe m\u00e9thylique) d\u2019un atome de carbone et de trois atomes d\u2019hydrog\u00e8ne est attach\u00e9 \u00e0 un endroit pr\u00e9cis dans la s\u00e9quence d\u2019ADN ou \u00e0 une prot\u00e9ine histone avec la participation de l\u2019enzyme m\u00e9thyltransf\u00e9rase. Ces \u00ab marques \u00bb r\u00e9organisent la structure globale du chromosome et affectent ainsi l\u2019activit\u00e9 des g\u00e8nes. Les marqueurs \u00e9pig\u00e9n\u00e9tiques, ou marqueurs, peuvent avoir l\u2019effet inverse sur l\u2019activit\u00e9 des g\u00e8nes. Certaines personnes d\u00e9couvrent une section particuli\u00e8re du chromosome, et l\u2019information g\u00e9n\u00e9tique cod\u00e9e qui y est cod\u00e9e devient disponible pour la synth\u00e8se des prot\u00e9ines. D\u2019autres, au contraire, ferment le chromosome, r\u00e9duisant compl\u00e8tement au silence les g\u00e8nes de cette r\u00e9gion.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>un petit fragment d\u2019une mol\u00e9cule (groupe m\u00e9thylique) d\u2019un atome de carbone et de trois atomes d\u2019hydrog\u00e8ne est attach\u00e9 \u00e0 un endroit pr\u00e9cis dans la s\u00e9quence d\u2019ADN ou \u00e0 une prot\u00e9ine histone avec la participation de l\u2019enzyme m\u00e9thyltransf\u00e9rase. Ces \u00ab marques \u00bb r\u00e9organisent la structure globale du chromosome et affectent ainsi l\u2019activit\u00e9 des g\u00e8nes. Les marqueurs [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"footnotes":""},"categories":[211],"tags":[],"class_list":["post-67886","post","type-post","status-publish","format-standard","hentry","category-concepts-psychologiques-cles-en-psychologie-physiologique"],"_links":{"self":[{"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/posts\/67886","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/comments?post=67886"}],"version-history":[{"count":0,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/posts\/67886\/revisions"}],"wp:attachment":[{"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/media?parent=67886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/categories?post=67886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/psychologydictionary.ae\/fr\/wp-json\/wp\/v2\/tags?post=67886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}