Sorting nexin-21 is a protein that in humans is encoded by the SNX21 gene.[5][6][7]

AliasesSNX21, C20orf161, PP3993, SNX-L, dJ337O18.4, sorting nexin family member 21, SNXL Quick facts Identifiers, Aliases ...
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This gene encodes a member of the sorting nexin family. Members of this family contain a phox (PX) domain, which is a phosphoinositide binding domain, and are involved in intracellular trafficking. This protein does not contain a coiled coil region, like some family members. The specific function of this protein has not been determined. Multiple transcript variants encoding distinct isoforms have been identified for this gene.[7]