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Keyword - Cyanelle (KW-0194)

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Protein encoded by the cyanelle genome or protein located in the cyanelle. Cyanelles are the plastids of glaucocystophyte algae. They are surrounded by a double membrane and, in between, a peptidoglycan wall. The cyanelle genome is of chloroplast size and contains genes for tRNAs, rRNAs and approx. 150 proteins, which is more than found in higher plant chloroplast genomes (this feature is also shared by other primitive plastids). Thylakoid membrane architecture and the presence of carboxysomes are cyanobacteria-like. Historically, the term cyanelle is derived from a classification as endosymbiotic cyanobacteria, and thus is not fully correct.


  • Cyanoplast
  • Muroplast


Cellular component

Gene Ontology


cyanelle [ GO:0009842 ]


CyanellePlastidCellular component
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