Cytoplasm . Cytoplasm, perinuclear region . Cytoplasmic vesicle, secretory vesicle . In presynaptic and postsynaptic areas in photoreceptor cells and in the basal microvilli of retinal pigment epithelium cells. Associated with melanosomes. Colocalizes with actin filaments. .
Detected in brain, skin, heart, adrenal medulla, pancreas, intestine, liver, kidney, muscle and testis.
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