Qhov sib txawv tseem ceeb ntawm voltage gated thiab ligand gated ion channels yog qhov voltage gated ion channels qhib nyob rau hauv teb rau ib tug voltage sib txawv thaum lub ligand gated channel qhib nyob rau hauv teb rau ib tug ligand binding.
Membrane thauj yog ib qho tseem ceeb mechanism uas tso cai rau ions nkag mus thiab tso tawm ntawm tes. Yog li, ion channels yog ib qho tseem ceeb molecules uas pab nyob rau hauv lub membrane thauj. Txawm li cas los xij, feem ntau ntawm cov ion channel yog embedded hauv cell membrane, thiab lawv yog cov proteins. Txawm li cas los xij, qee qhov tuaj yeem yog cov proteins channel thaum lwm tus yog cov nqa khoom. Channel proteins yog ob hom; cov channel uas tsis yog-gated. Gated ion channels yog peb hom; uas yog, voltage gated, ligand gated thiab stress-activated ion channels. Sab nkag ntawm ob lub channel no ib txwm tshwm sim thaum kaw, thiab lawv qhib raws li cov xwm txheej tshwj xeeb nkaus xwb.
Dab tsi yog Voltage Gated Ion Channels?
Voltage gated ion channels yog ib hom gated ion channels uas cuam tshuam nrog cov membrane thauj. Lawv yog cov transmembrane proteins. Yog li, lawv qhib raws li cov lus teb rau qhov sib txawv ntawm qhov sib txawv ntawm cov cell membrane. Thaum cov hluav taws xob muaj peev xwm nyob ze ntawm qhov hluav taws xob gated channel, nws hloov pauv qhov sib txawv ntawm cov channel protein. Nws qhib cov channel hla daim nyias nyias thiab ions nkag lossis tawm los ntawm txoj kev.
Daim duab 01: Voltage Gated Ion Channels
Voltage gated ion channels feem ntau nyob hauv lub paj hlwb, thiab lawv yog cov ion tshwj xeeb. Sodium Channels, Potassium Channels thiab Calcium Channels yog ob peb yam piv txwv ntawm voltage gated ion channels.
Ligand Gated Ion Channel yog dab tsi?
Ligand gated ion channels yog hom thib ob ntawm gated ion channels tam sim no hauv cell membrane. Lub ligand yog ib qho tshuaj molecule me me uas cuam tshuam nrog cov receptors ntawm cov channel proteins. Lawv yog ib hom stimulating molecules. Thaum lub ligand khi nrog cov receptor, nws yuav hloov cov duab los yog conformation ntawm channel protein.
Daim duab 02: Ligand Gated Ion Channels
Cov kab ligand gated yuav qhib kom cov ions nkag tau yooj yim los yog tawm ntawm cov kab no mus lossis los ntawm lub xov tooj ntawm tes. Receptors tuaj yeem nthuav tawm nyob rau hauv ob sab extracellular los yog sab intracellular ntawm daim nyias nyias. Acetylcholine receptors yog ib qho ntawm feem ntau kawm ligand gated ion channels.
Dab tsi zoo sib xws ntawm Voltage Gated thiab Ligand Gated Ion Channels?
- Ob qhov hluav taws xob gated thiab ligand gated ion channel yog gated ion channels.
- Lawv tseem ceeb rau kev ua kom zoo ntawm cov post synaptic neuron.
- Voltage Gated thiab Ligand Gated Ion Channels yog transmembrane protein molecules.
Qhov txawv ntawm Voltage Gated thiab Ligand Gated Ion Channels yog dab tsi?
Ions nkag mus rau cov hlwb ntawm cov cell membrane los ntawm ion channels uas yog gated raws lossis tsis yog gated ion channels. Voltage gated thiab ligand gated ion channels yog ob hom uas teb rau qhov sib txawv voltage thiab ligand khi raws li. Voltage gated ion channels yog ion tshwj xeeb thaum ligand gated ion channels tsis xaiv. Cov nram qab no infographic nthuav tawm qhov sib txawv ntawm voltage gated thiab ligand gated ion channels hauv daim ntawv tabular.
Summary – Voltage Gated vs Ligand Gated Ion Channels
Voltage gated thiab ligand gated ion channels yog ob hom transmembrane proteins uas koom nrog cov membrane thauj ions. Lawv qhib rau hauv cov xwm txheej tshwj xeeb thiab pab txhawb kev thauj mus los ion. Txog thaum ntawd lawv tseem kaw. Voltage gated ion channels qhib thaum muaj qhov sib txawv ntawm qhov sib txawv ntawm daim nyias nyias. Ligand gated ion channels qhib txoj kev thaum lawv khi nrog ligands uas yog cov tshuaj me me. Qhov no yog qhov txawv ntawm voltage gated thiab ligand gated ion channels.
