Lub cev muaj zog npaum li cas yog lub luag haujlwm rau kev txav mus los?
Lub cev muaj zog npaum li cas yog lub luag haujlwm rau kev txav mus los?

Video: Lub cev muaj zog npaum li cas yog lub luag haujlwm rau kev txav mus los?

Video: Lub cev muaj zog npaum li cas yog lub luag haujlwm rau kev txav mus los?
Video: Npau Suav li no Txhob coj mus tham qhia luag lwm tus 2024, Kaum ib hlis
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Lub cev muaj zog Proteins . Tsuas yog peb tsev neeg ntawm lub cev muaj zog proteins -myosin, kinesin, thiab dynein-lub zog feem ntau eukaryotic cellular kev txav mus los (Fig. 36.1 thiab Table 36.1). Thaum lub sij hawm evolution, myosin, kinesin, thiab Ras tsev neeg guanosine triphosphatases (GTPases) zoo li tau sib koom ib tug poj koob yawm txwv (Fig.

Xav txog qhov no, dab tsi lub cev muaj zog proteins yog lub luag haujlwm rau txav vesicles thiab organelles?

Ob tsev neeg ntawm lub cev muaj zog proteins , kinesin thiab dynein, thauj daim nyias nyias cov hlab ntsha , cov proteins , thiab organelles nrog microtubules. Yuav luag tag nrho cov kinesins txav cargo mus rau (+) kawg ntawm microtubules (anterograde thauj ), hos dyneins thauj cargo mus rau (−) kawg (retrograde thauj ).

Lub luag haujlwm ntawm lub cev muaj zog proteins hauv mitosis yog dab tsi? Lub cev muaj zog proteins yog cov tshuab molecular uas siv lub zog ntawm adenosine triphosphate (ATP) hydrolysis kom txav mus raws microtubules. Thaum lub sij hawm faib cell, lub cev muaj zog proteins yog xav tau rau kev tsim spindle, chromosome alignment thiab segregation.

Yog li ntawd, lub cev muaj zog proteins txav li cas?

Lub cev muaj zog proteins yog ib chav kawm ntawm molecular lub cev muaj zog uas tau txav raws li cytoplasm ntawm cov tsiaj cell. Lawv hloov chemical zog rau hauv kev ua haujlwm txhua yam los ntawm hydrolysis ntawm ATP.

Nyob qhov twg cov motors proteins pom?

Lub cev muaj zog proteins yog pom nyob rau hauv yuav luag tag nrho cov hlwb eukaryotic, thiab lawv hloov tshuaj zog siv ATP hydrolysis rau hauv txhua yam ua hauj lwm uas powers lawv txav raws cytoskeletal lem. Peb chav kawm ntawm lub cev muaj zog protein superfamily tau ua yam ntxwv: myosin, kinesin, thiab dynein.

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