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Calcium release-activated channels (CRAC) are specialized plasma membrane Ca2+ ion channels. When calcium ions (Ca2+) are depleted from the endoplasmic reticulum (a major store of Ca2+) of mammalian cells, the CRAC channel is activated to slowly replenish the level of calcium in the endoplasmic reticulum. The Ca2+ Release-activated Ca2+ (CRAC) Channel (CRAC-C) Family (TC# 1.A.52) is a member of the Cation Diffusion Facilitator (CDF) Superfamily. These proteins typically have between 4 and 6 transmembrane α-helical spanners (TMSs). The 4 TMS CRAC channels arose by loss of 2TMSs from 6TMS CDF carriers, an example of 'reverse' evolution'.

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dbo:abstract
  • Calcium release-activated channels (CRAC) are specialized plasma membrane Ca2+ ion channels. When calcium ions (Ca2+) are depleted from the endoplasmic reticulum (a major store of Ca2+) of mammalian cells, the CRAC channel is activated to slowly replenish the level of calcium in the endoplasmic reticulum. The Ca2+ Release-activated Ca2+ (CRAC) Channel (CRAC-C) Family (TC# 1.A.52) is a member of the Cation Diffusion Facilitator (CDF) Superfamily. These proteins typically have between 4 and 6 transmembrane α-helical spanners (TMSs). The 4 TMS CRAC channels arose by loss of 2TMSs from 6TMS CDF carriers, an example of 'reverse' evolution'. (en)
  • Orai ist in der ein Protein, das in der Plasmamembran Ionenkanäle mit hoher Selektivität für Calcium-Ionen bildet. Bisher wurden drei Subtypen von Orai identifiziert: Orai1, 2 und 3. Bei Abfall der Kalziumkonzentration im Endoplasmatischen Retikulum (ER) werden Orai-Kanäle durch den Stromal interaction molecule (STIM, v. a. STIM1) in der Membran des ER aktiviert. Durch das Einströmen (Influx) von Calciumionen aus dem Extrazellulärraum in das Zytosol durch Orai-Kanäle werden die intrazellulären Calciumspeicher wiederaufgefüllt.Damit erfüllen Orai-Proteine eine wichtige Funktion für die Calcium-Homöostase der Zelle. (de)
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  • Orai
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  • Calcium release-activated calcium channel ORAI (en)
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  • IPR012446 (en)
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  • Calcium release-activated calcium channel protein 1 (en)
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  • 4 (xsd:integer)
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  • PF07856 (en)
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  • Orai (en)
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  • Calcium release-activated channels (CRAC) are specialized plasma membrane Ca2+ ion channels. When calcium ions (Ca2+) are depleted from the endoplasmic reticulum (a major store of Ca2+) of mammalian cells, the CRAC channel is activated to slowly replenish the level of calcium in the endoplasmic reticulum. The Ca2+ Release-activated Ca2+ (CRAC) Channel (CRAC-C) Family (TC# 1.A.52) is a member of the Cation Diffusion Facilitator (CDF) Superfamily. These proteins typically have between 4 and 6 transmembrane α-helical spanners (TMSs). The 4 TMS CRAC channels arose by loss of 2TMSs from 6TMS CDF carriers, an example of 'reverse' evolution'. (en)
  • Orai ist in der ein Protein, das in der Plasmamembran Ionenkanäle mit hoher Selektivität für Calcium-Ionen bildet. Bisher wurden drei Subtypen von Orai identifiziert: Orai1, 2 und 3. Bei Abfall der Kalziumkonzentration im Endoplasmatischen Retikulum (ER) werden Orai-Kanäle durch den Stromal interaction molecule (STIM, v. a. STIM1) in der Membran des ER aktiviert. Durch das Einströmen (Influx) von Calciumionen aus dem Extrazellulärraum in das Zytosol durch Orai-Kanäle werden die intrazellulären Calciumspeicher wiederaufgefüllt.Damit erfüllen Orai-Proteine eine wichtige Funktion für die Calcium-Homöostase der Zelle. (de)
rdfs:label
  • Orai (de)
  • Calcium release activated channel (en)
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