Cappuccino, or Biogenesis of lysosomal organelles complex-1, subunit 4, cappuccino, is a human gene encoded by BLOC1S4. It may also be known as: Biogenesis of lysosome-related organelles complex 1 subunit 4; BLOC-1 subunit 4; Protein cappuccino homolog; BCAS4L; BLOS4; CNO. The encoded protein has an amino acid length of 217 and a mass of 23.4 kDa. Other isoforms may exist. Cappuccino is a member of the BLOC1S4 family. Homologs of this gene exist in other organisms, including: Fly, Rat, Zebrafish, Frog.