Ion kanallari, ion o’tkazuvchi kanallar \u2014tirik xujayra va hujayra organoidlarining lipopro-teid tabi- atli membranalarida, mem-brananing har xil modda va ionlarga bo’lgan tan- lab o’tkazuvchanlik xossasini ta’min- lovchi molekulyar sistemalar (Na+, K+ va Sa2+ kanallari, mitoxondriya va bakteriya hujayrasi membranasidagi proton kanallari). I. k. dastlab nerv hujayrasi membranasida, keyinchalik boshqa to’qimalarda hamda tsitoplazmik membranalar komplekslari, tsitoxro- moksidazalar, rodopsin va b. tarkibida qayd etilgan. Oksillar membranani «te- shib o’tib», ion o’tkazuvchi sistema hosil qiladi. I. k. ning tanlab o’tkazish Xu- susiyati uning geometrik parametrlari, ichki devori va bo’shlig’ida joylashgan kimyoviy guruxlar xususiyatiga bog’liq. I. k. orqali transport faol (energiya sarfi orqali) va passiv (membrananing ikki tomonidagi elektrokimyoviy po- tentsiallar farqi orqali) bo’ladi. Bitta ion kanali orkali bir sek. da 107 \u2014 10″ ion o’ta oladi. Bir qancha birikmalar ion kanali elementlari b-n birikib, kanal- ning chala o’tkazuvchanlik xususiyatini bu- zadi (chayonlar va ilonlar zaharidagi tok- sinlar, ayrim baqalar terisidan ajra- ladigan batroxotoksin, tet-radotoksin va tetraetilammoniy). Ayrim tuban molekulali birikmalar, mas, antibio- tiklar (gramisidin A, alametisin, amfoterisin) yordamida membranada I. kanallarini hosil qilish mumkin. Bu birikmalarning zahar sifatida ta’siri membrana o’tkazuvchanligining oshib ke- tishi tufayli hujayradagi ion muvoza- natining buzilishi b-n bog’liq.<\/p>\n","protected":false},"excerpt":{"rendered":"
Ion kanallari, ion o’tkazuvchi kanallar \u2014tirik xujayra va hujayra organoidlarining lipopro-teid tabi- atli membranalarida, mem-brananing har xil modda va ionlarga bo’lgan tan- lab o’tkazuvchanlik xossasini ta’min- lovchi molekulyar sistemalar (Na+, … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":99837,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[199],"tags":[],"class_list":["post-130601","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-i-harfi","entry"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"ru","enabled_languages":["uz","kr","ru"],"languages":{"uz":{"title":true,"content":true,"excerpt":false},"kr":{"title":false,"content":false,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/posts\/130601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/comments?post=130601"}],"version-history":[{"count":1,"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/posts\/130601\/revisions"}],"predecessor-version":[{"id":130608,"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/posts\/130601\/revisions\/130608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/media\/99837"}],"wp:attachment":[{"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/media?parent=130601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/categories?post=130601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/milliycha.uz\/ru\/wp-json\/wp\/v2\/tags?post=130601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}