Ho latela serapa se latelang se buang ka taolo ea liphatsa tsa lefutso, li - operon ke eng'me li hlaha hokae?
Context:Ho laoloa ha polelo ea liphatsa tsa lefutso ke lintlha tsa tikoloho le nakong ea mekhahlelo e fapaneng ea nts'etsopele ho ka etsahala mohatong o mong le o mong oa ts'ebetso joalo ka ho ngola, ho kopanya RNA, phetolelo le phetolelo ea kamora phetolelo ea protheine. Tlhaloso ea liphatsa tsa lefutso e ka susumetsoa ke taolo e ntle kapa e mpe, ho itšetlehile ka hore na ke efe ea mefuta e'meli ea liprotheine tse laolang tse bitsoang lintlha tsa phetolelo tse tlamang tatellano ea DNA haufi le kapa ho promoter. Sehlopha sa liphatsa tsa lefutso tse nang le promoter e tšoanang se bitsoa operon, se fumanoang haholo-holo ho li-prokaryotes le li-eukaryotes tse ling tse tlaase (mohlala, Caenorhabditis elegans). Ha ho etsoa liphetoho tse ntle tsa liphatsa tsa lefutso, activator ke eona ntho e susumetsang phetolelo e susumetsang phetolelo ha e tlamahanya le tatellano e haufi kapa ho promoter. Tlhophiso e fosahetseng e etsahala ha ntho e 'ngoe e ngolang e bitsoang repressor e tlama letoto la DNA le bitsoang opareitara, e leng karolo ea operon, ho thibela ho ngoloa. Li-repressor li ka thibeloa ke metsoako e bitsoang li-inducer (mohlala, allolactose), ka hona li lumella hore ho ngoloe. Liphatsa tsa lefutso tse khethehileng tse ka tsosoang ke li - inducer li bitsoa liphatsa tsa lefutso tse ka tsosoang, ho fapana le liphatsa tsa lefutso tse ka sehloohong tse sebetsang hoo e ka bang kamehla. Ho fapana le tsona ka bobeli, liphatsa tsa lefutso tsa sebopeho li ngola liprotheine tse sa ameheng ho laoleng liphatsa tsa lefutso. Ho phaella liketsahalong tse laolang tse amang mofetoheli, polelo ea liphatsa tsa lefutso e ka boela ea laoloa ke liphetoho tsa epigenetic ho chromatin, e leng mohaho oa DNA le protheine e fumanoang liseleng tsa eukaryotic.
Li - operon ke lihlopha tsa liphatsa tsa lefutso tse nang le motlatsi a le mong. Li hlaha haholo-holo ho li-prokaryotes le li-eukaryotes tse tlaase tse kang Caenorhabditis elegans.