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How peroxisomes multiply

With every cell division, peroxisomes duplicate and are segregated between progeny cells. Here, we discuss the different modes of peroxisome multiplication and the machinery that is involved in each case. Peroxisomes have been considered by many to be peripheral to mainstream cell biology. However, this is changing in response to the recent finding that peroxisomes obtain membrane constituents from the endoplasmic reticulum, making them the latest branch of the endomembrane system to be identified. Furthermore, the observations that peroxisome and mitochondrial biogenesis can occur in a coordinated manner, and that these organelles share factors for their multiplication, demonstrate previously unanticipated aspects of cellular organisation.