Bardet–Biedl syndrome 5 protein (BBS5)

BBS5 encodes a peripheral component of the BBSome, an octameric protein complex vital for ciliary transport and signaling via trafficking of membrane proteins, including G protein-coupled receptors (GPCRs), within the primary cilium[1][5][6]. BBS5 is distinguished by its two unique pleckstrin homology (PH) domains that potentially bind phosphoinositides, mediating association with ciliary membranes—though recent structural studies question the exclusivity and mechanism of this interaction[2][3][6]. BBS5 mutations disrupt ciliary function and contribute to Bardet–Biedl syndrome, a multisystem disorder affecting vision, weight regulation, kidney function, and more. BBS5 is considered structurally and functionally unique among BBSome subunits and plays a likely role in orchestrating the export and organization of membrane cargo from the cilium[5][6]. Key insights: - BBS5 is a peripheral membrane protein with two pleckstrin homology domains[5][6]. - It regulates ciliary protein export and interacts with phosphoinositides, but this mechanism is still being re-evaluated in recent studies[2][3]. - Mutations are linked to Bardet–Biedl syndrome; BBS5 is not yet a direct pharmacological drug target[5]. - No approved drugs or direct safety concerns have been identified for targeting BBS5. Genetic mutations serve as clinical biomarkers[5]. - Aliases and alternative forms are mostly standardized; "BBS5" is the canonical abbreviation and “Bardet–Biedl syndrome 5 protein” the widely used full name[4][5][6].

Other names

BBSome complex member BBS5DKFZp762I194Bardet–Biedl syndrome 5 proteinBBS5

N/A (no drugs target BBS5 directly)