Puas yog tryptophan yog corepressor?

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Puas yog tryptophan yog corepressor?
Puas yog tryptophan yog corepressor?
Anonim

Tryptophan yog corepressor ntawm trp operon trp operon Trp operon muaj tsib yam genes: trpE, trpD, trpC, trpB, thiab trpA, uas encode enzymatic qhov chaw ntawm txoj kev.. Nws kuj muaj cov tshuaj tiv thaiv kab mob hu ua trpR. trpR muaj tus txhawb nqa qhov twg RNA polymerase khi thiab ua ke mRNA rau kev tswj hwm cov protein. https://en.wikipedia.org › wiki › Trp_operon

trp operon - Wikipedia

. Qhov kev hloov pauv tau tso cai rau tus neeg tawm tsam los khi rau tus neeg teb xov tooj qhov chaw ntawm operon. Tus neeg ntxeev siab ua txoj hauv kev, tiv thaiv RNA polymerase los ntawm kev sau cov noob caj noob ces.

Vim li cas tryptophan yog corepressor?

Thaum tryptophan nyob ib puag ncig, nws txuas rau cov tshuaj tiv thaiv molecules thiab hloov lawv cov duab kom lawv ua haujlwm. Ib tug me me molecule zoo li trytophan, uas hloov ib tug repressor rau hauv nws active lub xeev, hu ua ib tug corepressor.

YPuas tryptophan yog inducer?

tryptophan yog an inducer. … Cov qib qis ntawm tryptophan khi rau tus neeg teb xov tooj trp thiab thaiv kev hloov pauv ntawm tryptophan biosynthesis noob. e. Cov qib siab ntawm tryptophan qhib RNA polymerase thiab ua rau kev hloov pauv.

Yuav ua li cas operon yog trp?

The 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 classicpiv txwv li ib tug inducible operon. Thaum lactose nyob hauv lub cell, nws hloov mus rau allolactose.

Corepressor molecule yog dab tsi?

Corepressors yog cov neeg tswj hwm kev hloov pauv uas tsis muaj peev xwm ntawm kev ywj pheej DNA khi, raug xaiv ncaj qha lossis tsis ncaj los ntawm DNA-binding TFs los tawm tsam cov hom phiaj qhia.

Pom zoo:

Nthuav cov khoom
Lub sijhawm elongation ntawm kev txhais lus uncharged trnas txav mus rau?
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Lub sijhawm elongation ntawm kev txhais lus uncharged trnas txav mus rau?

Peptide daim ntawv cog lus; uncharged tRNA txav mus rau qhov E site & tom qab tawm ntawm ribosome; lub mRNA tau hloov pauv 3 lub hauv paus mus rau sab laug, ua rau tRNA bearing dipeptide hloov mus rau P site P site P-site (rau peptidyl) yog qhov thib ob khi qhov chaw rau tRNA hauv ribosome.

Dab tsi yog asbestiform fibers?
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Dab tsi yog asbestiform fibers?

Raws li siv hauv daim ntawv tshaj tawm no, lo lus asbestiform fibers suav nrog fibers uas muaj lub zog zoo thiab yoog raws, ruaj khov, cov qauv saum npoo tsis muaj qhov tsis xws luag, thiab ntau lwm yam khoom tau piav qhia tom qab. Kev lag luam zoo asbestos yog ib qho piv txwv ntawm asbestiform fiber.

Colleen dewhurst tuag li cas?
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Colleen dewhurst tuag li cas?

Dewhurst tuag rau hnub Thursday ntawm mob qog noj ntshav ntawm nws lub tsev hauv New York suburb ntawm Lewisboro, hais Tom Viola, tus kws tshaj lij rau lub koomhaum uas nws ua haujlwm, Tus Ua Yeeb Yam Equity. Txawm hais tias ntau phau ntawv sau npe Dewhurst hnub nyoog li 65, nws yog 67, hais tias nws tus khub ntev, Ken Marsolais.