1R92:
reference: Clp protease complexes from photosynthetic and non-photosynthetic plastids and mitochondria of plants, their predicted three-dimensional structures, and functional implications., Peltier JB, Ripoll DR, Friso G, Rudella A, Cai Y, Ytterberg J, Giacomelli L, Pillardy J, van Wijk KJ, J Biol Chem 2004 Feb 6;279(6):4768-81. Epub 2003 Oct 30. PMID: 14593120

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