Granin
Granin ( chromogranin and secretogranin ) is a protein family of regulated secretory proteins ubiquitously found in the cores of amine and peptide hormone and neurotransmitter dense-core secretory vesicles . 
<triplet> Granin <subj> protein family <obj> instance of <subj> protein <obj> subclass of <triplet> protein family <subj> protein <obj> facet of