Biopolym. Cell. 1999; 15(2):109-121.
http://dx.doi.org/10.7124/bc.00050E
Огляди
Вірус гепатиту В: загальний опис, фізична структура, генетична організація, транскрипція генів та геномні регулюючі елементи
1Аджаміян Ф.
  1. Інститут молекулярної біології і генетики НАН України
    Вул. Академіка Заболотного, 150, Київ, Україна, 03680

Abstract

Геном вірусу гепатиту В людини (HBV) існує у вигляді дволанцюгових кільцевих молекул ДНК Він містить чотири фланкуючі відкриті рамки зчитування (ORFs) генів, S (preSl, preS2) регіоні и) кодує головний, середній та великий білки (HBsAg). С і preC регіони кодують HBcAg і HBeAg, X регіон кед у є поліпептид, який експресується за час HBV інфекції Р регіон кодує білок з різноманітними функціями у реплікації. Ідентифіковано чотири класи HBV мРНК. У геномі HBV pre-S1 промотор продукує великий білок, pre-S2/S виробляє головний і середній білки. X промотор кодує 0,7 і 0,9 трагскрипти. С і пре-С промотори кодують Core і pol(HBVcAg) і HBeAg білки. Ключовими регуляторними елементами HBV є енхансери І і II. Активність енхансера II є специфічною для печінки. Він активує транскрипцію обох пре-S1 і пре-S2/S промоторів. Два HBV енхансери активують основні промото­ри HBV. Бокс-α в І 1-А і бокс-β в ІІ-В елементах у геномі HBV необхідні для функції енхансера II. Бокси а і р можуть регулювати активацію промотора Core, білки a, b, f і білки с, d прикріплюються у боксах а і р відповідно і впливають на енхансерну функцію.
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