Ligand gated channels ua dab tsi?
Ligand gated channels ua dab tsi?

Video: Ligand gated channels ua dab tsi?

Video: Ligand gated channels ua dab tsi?
Video: Membrane Transport, Animation 2024, Kaum ib hlis
Anonim

Ligand - Gated ion channels (LICs, LGIC), kuj tseem hu ua ionotropic receptors, yog ib pawg ntawm transmembrane ion - channel cov proteins uas qhib kom tso cai ions xws li Na+, K+, Ca2+, thiab/los yog Cl kom dhau los ntawm daim nyias nyias nyob rau hauv cov lus teb rau kev khi ntawm ib tug chemical messenger (i.e. a ligand ), as a

Kuj nug, dab tsi yog txoj haujlwm ntawm ligand gated channels?

Ligand-gated ion channels yog transmembrane protein ntau complexes uas ua ion ntws los ntawm ib tug channel pore nyob rau hauv teb rau kev khi ntawm ib tug neurotransmitter. Lawv txawv ntawm voltage-gated ion channels, uas yog rhiab heev rau daim nyias nyias muaj peev xwm, thiab GPCRs, uas siv ob tug tub txib.

Ib sab saum toj no, cov kab ligand gated nyob qhov twg? Ligand - gated channels , nyob ntawm qhov chaw ntawm kev sib cuag synaptic yog pom Feem ntau ntawm dendritic spines, dendrites thiab somata ntawm paj hlwb, lossis neurons.

Tsuas yog li ntawd, qhov txawv ntawm qhov voltage thiab ligand gated channels yog dab tsi?

Txhua neuron muaj ob hom cov channel nyob rau hauv lawv cov cell membrane. Voltage gated ion channels qhib nyob rau hauv teb rau hluav taws xob (piv txwv li thaum lub cell tau depolarized) qhov twg li ligand gated channels qhib nyob rau hauv teb rau a ligand (qee yam teeb liab) khi rau lawv.

Dab tsi yog gated channels hauv biology?

Gated ion cov channel yog ua los ntawm ntau yam transmembrane proteins uas tsim lub pore, los yog channel , nyob rau hauv lub cell membrane. Lub sij hawm " rooj vag " hais txog qhov tseeb tias ion channel yog tswj los ntawm "lub rooj vag" uas yuav tsum tau qhib kom tso cai rau cov ions los ntawm.

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