biologia - Ganatleba
biologia - Ganatleba
biologia - Ganatleba
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genis moqmedebis regulacia<br />
(trip-operoni)<br />
axla ganvixiloT operoni, romelic marTavs aminomJava triptofanis sinTezs;<br />
mas trip-operoni ewodeba. nawlavis Cxiris baqteria asinTezirebs triptofans<br />
da am procesisTvis iyenebs xuT ferments. sailustraciod ganvixilavT<br />
triptofanis sinTezis regulacias sami fermentis monawileobiT (sur. 65).<br />
geni-regulatori<br />
cilarepresori<br />
geni-regulatori<br />
promotori operatori d<br />
a b g<br />
triptofanis<br />
molekula<br />
promotori operatori d e v<br />
rnm-polimeraza rnm-polimeraza<br />
trip 1<br />
trip 2<br />
trip 3<br />
sur. 65. genebis moqmedebis regulacia triptofanis gareSe<br />
cilarepresori<br />
triptofan represoris<br />
kompleqsi<br />
e v<br />
sur. 66. genebis moqmedebis regulacia<br />
triptofanis Tanaobisas<br />
struqturul genebs, romlebic am fermentebs kodirebs (d, e, v), esazRvreba<br />
operatori, romelic `CarTavs~ an `gamorTavs~ aRniSnul genebs. rogorc<br />
xedavT, trip-operoni struqturiT laq-operonis msgavsia. ganvixiloT genis<br />
moqmedebis regulaciis meqanizmi, rodesac ujreds ar `hyofnis~ triptofani<br />
(sur. 66). regulatoruli genis saboloo produqtia cila-represori, romelsac<br />
triptofanis gareSe ar SeuZlia daukavSirdes operators. Sesabamisad, rnmpolimeraza<br />
daubrkoleblad gadaadgildeba da aaqtiurebs struqturul<br />
2.9<br />
53
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