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A vacuole is a membrane-bound organelle found in plant and fungal cells. Vacuoles have a variety of cellular functions, including storage, sequestration and structural support. Vacuoles also have important roles in autophagy and degradation of cellular contents.
Coccolithophores are unicellular marine algae that produce calcitic
particles inside their cells. Here the authors study cells of the dominant
coccolithophore Emiliania huxleyi and identify an intracellular compartment that
is filled with high concentrations of a disordered form of calcium.