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The most common form of plastid, the chloroplast is a photosynthetic organelle found in all photosynthetic eukaryotes except glaucocystophyte algae (where it is called a cyanelle) and Paulinella species (where it is called an organellar chromatophore). In green (photosynthetic) tissue they house the machinery necessary for pigment biosynthesis, amino acid synthesis, lipid metabolism etc, as well as the machinery for photosynthesis and CO(2) fixation. They are surrounded by between 2 and 4 membranes and contain thylakoids in green tissue.


› Cellular component



Gene Ontology


chloroplast [ GO:0009507 ]
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