doi: 10.1074/jbc.272.21.13793.
Flotillin and epidermal surface antigen define a new family of caveolae-associated integral membrane proteins
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- PMID: 9153235
- DOI: 10.1074/jbc.272.21.13793
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Flotillin and epidermal surface antigen define a new family of caveolae-associated integral membrane proteins
J Biol Chem.
.
Free article
Abstract
Caveolae are plasmalemmal microdomains that are involved in vesicular trafficking and signal transduction. We have sought to identify novel integral membrane proteins of caveolae. Here we describe the identification and molecular cloning of flotillin. By several independent methods, flotillin behaves as a resident integral membrane protein component of caveolae. Furthermore, we have identified epidermal surface antigen both as a flotillin homologue and as a resident caveolar protein. Significantly, flotillin is a marker for the Triton-insoluble, buoyant membrane fraction in brain, where to date mRNA species for known caveolin gene family members have not been detected.
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