Editing Cytoplasm (section)

===Cytosol===
{{main|Cytosol}}

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 a complex mixture of [[cytoskeleton]] filaments, dissolved molecules, and water. The cytosol's filaments include the [[protein filament]]s such as [[actin filament]]s and [[microtubule]]s that make up the cytoskeleton, as well as soluble [[protein]]s and small structures such as [[ribosome]]s, [[proteasome]]s, and the mysterious [[Vault (organelle)|vault complexes]].<ref>{{Cite journal |vauthors=van Zon A, Mossink MH, Scheper RJ, Sonneveld P, Wiemer EA |date=September 2003 |title=The vault complex |journal=Cellular and Molecular Life Sciences |volume=60 |issue=9 |pages=1828–37 |doi=10.1007/s00018-003-3030-y |pmc=11138885 |pmid=14523546 |s2cid=21196262}}</ref> The inner, granular and more fluid portion of the cytoplasm is referred to as endoplasm.[[File:Localisations02eng.jpg|thumb|right|250px|Proteins in different [[cellular compartment]]s and structures [[Protein tag#Protein tags|tagged]] with [[green fluorescent protein]]]]

Due to this network of fibres and high concentrations of dissolved [[macromolecule]]s, such as [[protein]]s, an effect called [[macromolecular crowding]] occurs and the cytosol does not act as an [[ideal solution]]. This crowding effect alters how the components of the cytosol interact with each other.