Yuav ua li cas cov protein nyob sab nraud ntawm tes ua rau muaj xwm txheej tshwm sim hauv lub cell?
Yuav ua li cas cov protein nyob sab nraud ntawm tes ua rau muaj xwm txheej tshwm sim hauv lub cell?

Video: Yuav ua li cas cov protein nyob sab nraud ntawm tes ua rau muaj xwm txheej tshwm sim hauv lub cell?

Video: Yuav ua li cas cov protein nyob sab nraud ntawm tes ua rau muaj xwm txheej tshwm sim hauv lub cell?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

A protein tau dhau ntawm daim nyias nyias thiab mus rau hauv lub cell , ua rau teeb liab hauv cell . b. A protein nyob rau hauv lub cell khi rau ib tug receptor protein ntau ntawm cell nto, ua rau nws hloov cov duab thiab xa cov teeb liab hauv cell . Phosphorylation hloov cov duab ntawm tus protein ntau , feem ntau activating nws.

Raws li txoj cai, Phosphorylating cov protein muaj txiaj ntsig dab tsi ntawm cov ntawv xeem protein?

Phosphorylation hloov cov duab ntawm lub protein ntau , feem ntau activating nws. Protein phosphorylation ua rau muaj kev hloov pauv hauv cov phosphorylated protein . Cov duab hloov tau tshwm sim los ntawm kev sib cuam tshuam ntawm cov pab pawg tshiab phosphate nrog them los yog polar amino acids ntawm protein ntau ua phosphorylated.

Tsis tas li ntawd, dab tsi tshwm sim thaum lub sij hawm prophase? Chromosomes pom, cov nucleolus ploj, cov ntaub ntawv mitotic spindle, thiab lub hnab ntawv nuclear ploj.

  • Chromosomes ua ntau coiled thiab tuaj yeem pom nyob rau hauv lub teeb pom kev zoo.
  • Txhua tus chromosome duplicated yog pom raws li ib khub niam txiv chromatids koom los ntawm cov duplicated tab sis unseparated centromere.

Tsis tas li ntawd, lub voj voog ntawm tes yuav cuam tshuam dab tsi hauv lub xov tooj ntawm tes uas tsim cov cohesin protein hloov pauv?

Yog cohesin tsis ua haujlwm, chromosomes tsis tau ntim tom qab DNA replication nyob rau hauv S theem ntawm interphase. Nws yog qhov zoo li qhov cov proteins ntawm thaj tsam centromeric, xws li kinetochore, yuav tsis form.

Dab tsi MPF ua rau cov haujlwm tshwj xeeb uas nws ua rau?

MPF ua rau cov cell txoj kev dhau los tus G2 checkpoint mus rau theem M. Kev loj hlob zoo yog ib qho protein tso tawm los ntawm meej cov hlwb uas txhawb nqa lwm cov hlwb kom sib faib.

Pom zoo: