ArticleCell communication and signaling : CCS2025
A subset of Orai1α and Orai1β subunits heteromerizes to form CRAC channels.
Article in Cell communication and signaling : CCS, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- A Quartet of Native Orai Channel Isoforms Orchestrates Graded NFAT Activation and Transcription.bioRxiv : the preprint server for biology · 2026Article
- Calcium Signaling Dysregulation in Diabetic Cardiomyopathy: Roles of STIM and Orai Channels.Handbook of experimental pharmacology · 2026Review
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Authors and funding
9 authors.
Funding
Abstract
backgroundCa
methodsA lipid raft isolation protocol in combination with Western blotting assay was conducted to detect the expression of each Orai1 variants in the isolated membrane fractions. Ca
resultsOur results indicate that Orai1α and Orai1β exhibit different lipid raft partitioning in resting cells when expressed individually, likely attributed to the presence of a caveolin-binding domain in Orai1α. However, when both variants are co-expressed, they show a similar distribution predominantly in the lipid raft domains, indicating potential interaction between the two Orai1 forms. Expression of a dominant-negative Orai1β mutant has been found to interfere with Orai1α-mediated Ca
conclusionsOur results indicate that while Orai1α and Orai1β mostly form separate CRAC channels, a small subset of both Orai1 variants combine to form heteromeric channels. These findings provide new insights on the nature of CRAC channels.
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