Frequenin homolog ; Frequenin-like protein ; Frequenin-like ubiquitous protein ; FLUP ; FREQ
Categories
Elisa
Function
Neuronal calcium sensor, regulator of G protein-coupled receptor phosphorylation in a calcium dependent manner. Directly regulates GRK1 (RHOK), but not GRK2 to GRK5. Can substitute for calmodulin (By similarity). Stimulates PI4KB kinase activity (By similarity). Involved in long-term synaptic plasticity through its interaction with PICK1 (By similarity). May also play a role in neuron differentiation through inhibition of the activity of N-type voltage-gated calcium channel.
Specificity
Natural and recombinant Human Neuronal calcium sensor 1
Subcellular Location
Golgi apparatus Golgi stack membrane Peripheral membrane protein Cell junction synapse postsynaptic cell membrane postsynaptic density Cytoplasm perinuclear region Cell membrane Peripheral membrane protein Associated with Golgi stacks. Post-synaptic densities of dendrites, and in the pre-synaptic nerve terminal at neuromuscular junctions.
Interacts with KCND2. Interacts in a calcium-independent manner with PI4KB. This binding competes with CALN2/CABP7 binding to PI4KB (By similarity). Interacts with ARF1, ARF3, ARF5 and ARF6. Interacts in a calcium-dependent manner with PICK1 (via AH domain) (By similarity). Interacts with IL1RAPL1.