function:Regulates intracellular concentrations of taurine and glutamate. Negatively modulates SLC1A1/EAAC1 glutamate transport activity by decreasing its affinity for glutamate. May be involved in membrane traffic.,induction:By methyl-beta-cyclodextrin (By similarity). Up-regulated upon induced differentiation and in heat stress.,similarity:Belongs to the PRA1 family.,subcellular location:Also exists as a soluble form in the cytoplasm. Associated with microtubules.,subunit:Forms multimers. Binds to prenylated RAB1A and RAB3A, to the neuronal glutamate transporter SLC1A1/EAAC1, and to the ADP-ribosylation like factor ARL6, a member of the Ras superfamily. Does not bind to VAMP2.,
Endoplasmic reticulum membrane ; Multi-pass membrane protein . Cell membrane ; Multi-pass membrane protein . Cytoplasm . Cytoplasm, cytoskeleton . Also exists as a soluble form in the cytoplasm. Associated with microtubules. .
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