Qhov kev pib ua haujlwm yog dab tsi?
Qhov kev pib ua haujlwm yog dab tsi?

Video: Qhov kev pib ua haujlwm yog dab tsi?

Video: Qhov kev pib ua haujlwm yog dab tsi?
Video: Txoj Kev Yug Los Ua Neeg Yog Dab Tsi X08 2024, Kaum ib hlis
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Protein Synthesis thiab Degradation

Qhov no pib complex yog ib qho ua tiav ribosome uas muaj fMet tRNA hauv P site, ua raws li AUG codon ntawm mRNA, thiab ribosomal A site npaj tau txais qhov thib ob aminoacyl-tRNA.

Hais txog qhov no, peb lub ntsiab lus ntawm qhov pib ua haujlwm yog dab tsi?

pib complex txhais. Cov complex tsim rau pib ntawm kev txhais lus. Nws muaj 30S ribosomal subunit; mRNA; N-formyl-methionine tRNA; thiab peb pib yam.

Ib yam li ntawd, dab tsi khi rau txoj kev pib ua ntej? Ua ntej , lub me me ribosomal subunit khi rau tRNAi uas nqa methionine hauv eukaryotes thiab archaea thiab nqa N-formyl-methionine hauv cov kab mob. (Vim tRNAi yog nqa ib qho amino acid, nws hais tias yuav raug them.)

Tsis tas li ntawd, dab tsi yog qhov transcription pib txoj haujlwm?

kev sau ntawv / DNA kev sau ntawv . Ua ke, lub kev sau ntawv yam thiab RNA polymerase tsim a complex hu ua transcription pib complex . Qhov no complex pib kev sau ntawv , thiab RNA polymerase pib mRNA synthesis los ntawm kev sib piv cov hauv paus ntsiab lus rau thawj DNA strand.

Cov txheej txheem pib ua dab tsi?

Lo lus tseem ceeb - Initiation factor (KW-0396) Protein uas ua lub luag haujlwm tseem ceeb hauv kev pib kev txhais lus ntawm mRNA molecule rau hauv polypeptide. Pib yam tseem ceeb pab tsim cov complex ntawm mRNA thiab ribosome.

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