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C-terminal processing peptidase : ウィキペディア英語版 | C-terminal processing peptidase
C-terminal processing peptidase (, ''CtpA gene product (Synechocystis sp.)'', ''photosystem II D1 protein processing peptidase'', ''protease Re'', ''tail-specific protease'', ''Tsp protease'') is an enzyme. This enzyme catalyses the following chemical reaction : The enzyme shows specific recognition of a C-terminal tripeptide, Xaa-Yaa-Zaa, in which Xaa is preferably Ala or Leu, Yaa is preferably Ala or Tyr, and Zaa is preferably Ala, but then cleaves at a variable distance from the C-terminus. A typical cleavage is -Ala-Ala!Arg-Ala-Ala-Lys-Glu-Asn-Tyr-Ala-Leu-Ala-Ala. In the plant chloroplast, the enzyme removes the C-terminal extension of the D1 polypeptide of photosystem II Proteolytic processing of the D1 protein of photosystem II anables light-driven assembly of the tetranuclear manganese cluster. == References ==
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