Lub luag haujlwm ntawm lub cev muaj zog proteins yog dab tsi?
Lub luag haujlwm ntawm lub cev muaj zog proteins yog dab tsi?

Video: Lub luag haujlwm ntawm lub cev muaj zog proteins yog dab tsi?

Video: Lub luag haujlwm ntawm lub cev muaj zog proteins yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
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Lub cev muaj zog yog cov molecular motors uas siv ATP hydrolysis txav raws cytoskeletal filaments nyob rau hauv lub cell . Lawv ua tiav ntau lub luag haujlwm hauv cov kab mob lom neeg, suav nrog kev tswj cov zawv zawg ntawm filaments hauv cov leeg nqaij thiab kev sib kho hauv lub cev. thauj nrog biopolymer filament lem.

Ua raws li qhov xav tau, lub cev muaj zog protein ua dab tsi?

Motor proteins yog ib chav kawm ntawm molecular motors uas tuaj yeem txav mus raws li cytoplasm ntawm tsiaj hlwb. Lawv hloov chemical zog rau hauv kev ua haujlwm txhua yam los ntawm hydrolysis ntawm ATP.

Tsis tas li ntawd, qhov sib txawv ntawm lub cev muaj zog proteins yog dab tsi? Tsuas yog peb tsev neeg ntawm lub cev muaj zog proteins -myosin, kinesin, thiab dynein-power feem ntau eukaryotic cellular txav (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.

Tsis tas li ntawd, 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.

Yuav ua li cas lub cev muaj zog proteins taug kev?

Kinesins yog lub cev muaj zog proteins uas thauj xws li cargo los ntawm taug kev unidirectionally raws microtubule taug qab hydrolysing ib molecule ntawm adenosine triphosphate (ATP) ntawm txhua kauj ruam. Nws tau xav tias ATP hydrolysis powered txhua kauj ruam, lub zog tso tawm propelling lub taub hau mus rau tom ntej binding site.

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