A protein complex required for the biogenesis of specialized organelles of the endosomal-lysosomal system, such as melanosomes and platelet dense granules. Many of the protein subunits are conserved between mouse and human; the mouse complex contains the Pallidin, Muted, Cappuccino, Dysbindin, Snapin, BLOS1, BLOS2, AND BLOS3 proteins. (Gene Ontology, GO_0031083)
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7 proteins comprising BLOC-1 complex assembly using integrated AP-MS and IF data from the CM4AI U2OS Cell Map Protein Localization Assemblies dataset.