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BIOL 371 (10)

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Department
Biology
Course
BIOL 371
Professor
Heidi Engelhardt
Semester
Winter

Description
StudyQuestionsNeurophysiologyUnits131TherearethreetypesofvoltagegatedionchannelsfoundinneuronsDiscussthesechannelswithrespecttotheirstructureandtheirroleinthetransmissionofnerveimpulsesaVoltagegatedNaChannelalphasubunitsAlphasubunitisencodedas1entireprotein3iNHononeendCOOontheotheriiDeterminesbothspecificityandsensitivity4domainsIIIIIIIVEachdomainhas6transmembranehelicesS4containskeyAAandchargesensoriExtendsoutandchangetheshapePLoopsdangleontheoutsideanddeterminespecificitybyguardingthecoreanddeterminingifKorNagoesthrough2bVoltagegatedNaandCaChannelVerysimilartoNachannelsPloopssetthetwoapartiAAsequencedetermineswhichcationitletsinNHononeendandCOOH2cVoltagegatedKEachofthe4segmentsareencodedasaseparatepepti
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