Illustration of a cross-section of a lysosome that contains hydrolytic enzymes (bright orange). Lysosomes are membrane-bound organelles made up of a phospholipid bilayer (orange and brown) and many proteins. Examples of lysosomal proteins are ion channel transporters (yellow), V-ATPase (purple), amino acid transporters (lilac), glucose transporters (white), cholesterol transporters (green), nucleotide transporters (blue), SNARES (green helix), LAMPs (pink), and motor adaptors (green) for transporting the lysosome along microtubules (across top right corner) with the help of dynein (blue).