Tus trp operon yog a repressible system. Qhov sib txawv tseem ceeb ntawm cov txheej txheem repressible thiab inducible yog qhov tshwm sim thaum lub effector molecule khi rau lub repressor.
Vim li cas trp operon inducible lossis repressible?
Tus trp operon yog a repressible system; qhov operon no yeej ib txwm hais tshwj tsis yog tias tryptophan, corepressor, yuav muaj nyob rau hauv lub cell. Thaum tryptophan yog tam sim no, nws represses qhia cov noob nyob rau hauv no operon. Qhov sib txawv ntawm inducible thiab repressible systems yog me me, tab sis tseem ceeb.
YPuas tryptophan yog qhov ua rau muaj kev kub ntxhov?
The tryptophan (trp) operon system yog hom kev tswj hwm kev ua haujlwm Nws tau ua haujlwm los ntawm Jacob thiab Monod hauv xyoo 1953. … Thaum tryptophan tam sim no, nws khi cov trp repressor thiab induces ib tug conformational hloov nyob rau hauv cov protein, ua rau nws khi tus neeg teb xov tooj trp thiab tiv thaiv transcription (operon yog repressed).
hom operon yog trp operon?
Tus trp operon yog ib qho piv txwv classic ntawm a repressible operon Thaum tryptophan accumulates, tryptophan khi rau ib tug repressor, uas ces khi rau tus neeg teb xov tooj, tiv thaiv ntxiv transcription. Lub lac operon yog ib qho piv txwv classic uas yog inducible operon. Thaum lactose nyob hauv cell, nws hloov mus rau allolactose.
Puas yog trp operon zoo Repressible?
Tsis zoo li lac operon, trp operon muaj cov thawj coj peptide thiab cov txheej txheem attenuator uas tso cai rau kev tswj hwm qib. Nws yog ib qho piv txwv ntawm repressible negative regulation of gene expression.
