Dab tsi cytoskeletal fiber cuam tshuam rau cov leeg nqaij?
Dab tsi cytoskeletal fiber cuam tshuam rau cov leeg nqaij?

Video: Dab tsi cytoskeletal fiber cuam tshuam rau cov leeg nqaij?

Video: Dab tsi cytoskeletal fiber cuam tshuam rau cov leeg nqaij?
Video: Noj Dab Tsi - Supryze ft. Chenning Xiong (Official Lyric Video) 2024, Kaum ib hlis
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Microfilaments zoo li xov zoo li cov protein fibers , 3-6nm txoj kab uas hla. Lawv muaj feem ntau ntawm cov kab mob sib kis hu ua actin, uas yog cov protein ntau ntawm cov cellular. Microfilaments 'kev koom tes nrog cov protein myosin yog lub luag haujlwm rau cov leeg nqaij.

Ntxiv mus, puas microtubules koom nrog hauv cov leeg nqaij?

Txhawm rau tsim cilia lossis flagella, microtubules teem lawv tus kheej hauv "9 + 2" array. Cov caj npab, spokes, thiab txuas tuav microtubules ua ke thiab cia kev sib cuam tshuam ntawm microtubules uas yog superficially zoo ib yam li zawv zawg ntawm actin thiab myosin filaments nyob rau hauv nqaij contraction.

Dab tsi yog 3 lub ntsiab lus tseem ceeb ntawm cytoskeleton? Nws yog lub network ntawm protein ntau fibers txhawb nqa cell zoo thiab anchoring organelles nyob rau hauv lub cell. Peb lub ntsiab yam ntxwv ntawm lub cytoskeleton yog microtubules (ua los ntawm tubulins ), microfilaments (tsim los ntawm actins) thiab nruab nrab filaments . Tag nrho peb lub ntsiab lus cuam tshuam nrog ib leeg uas tsis yog-covalently.

Tsis tas li cov lus nug yog, peb hom fibers loj uas ua rau cytoskeleton yog dab tsi thiab lawv lub luag haujlwm yog dab tsi?

Peb hom loj ntawm filaments ua kom lub cytoskeleton : actin filaments, microtubules, thiab intermediate filaments. Actin filaments tshwm sim hauv ib cell nyob rau hauv daim ntawv ntawm meshworks los yog bundles ntawm parallel fibers ; lawv pab txiav txim seb cov duab ntawm tes thiab tseem pab nws ua raws li cov substrate.

Peb hom cytoskeletal fibers yog dab tsi?

Hauv eukaryotes, muaj peb hom protein fibers hauv cytoskeleton: microfilaments, intermediate filaments, thiab microtubules.

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