Domain:The calcium-binding activity is thought to be localized in the cytoplasmic tail of the protein. ,Function:Possibly involved in structural functions as organizing other membrane components or in targeting the vesicles to the plasma membrane. ,online information:Synaptophysin entry ,PTM:Ubiquitinated; mediated by SIAH1 or SIAH2 and leading to its subsequent proteasomal degradation. ,similarity:Belongs to the synaptophysin/synaptobrevin family. ,similarity:Contains 1 MARVEL domain. ,subunit:Homohexamer or homotetramer. ,tissue specificity:Characteristic of a type of small (30-80 nm) neurosecretory vesicles , including presynaptic vesicles , but also vesicles of various neuroendocrine cells of both neuronal and epithelial phenotype. ,
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