Page "Cytoplasm" Paragraph 6

The cytosol is the portion of the cytoplasm not contained within membrane-bound organelles.

Cytosol makes up about 70 % of the cell volume and is composed of water, salts and organic molecules.

The cytosol also contains the protein filaments that make up the cytoskeleton, as well as soluble proteins and small structures such as ribosomes, proteasomes, and the mysterious vault complexes.

The inner, granular and more fluid portion of the cytoplasm is referred to as endoplasm. Proteins in different cellular compartment s and structures tagged with green fluorescent protein