EC - Chloroplast protein-transporting ATPase

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IntEnz Enzyme Nomenclature


Accepted name:
chloroplast protein-transporting ATPase
Systematic name:
ATP phosphohydrolase (chloroplast protein-importing)



A non-phosphorylated, non-ABC (ATP-binding cassette) ATPase that is involved in protein transport. Involved in the transport of proteins or preproteins into chloroplast stroma (several ATPases may participate in this process). Formerly EC

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ERGO , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB
Gene Ontology: GO:0015450 , GO:0016464


  1. Cline, K., Ettinger, N.F. and Theg, S.M.
    Protein-specific energy requirements for protein transport across or into thylakoid membranes. Two lumenal proteins are transported in the absence of ATP.
    J. Biol. Chem. 267 : 2688-2696 (1992). [PMID: 1733965]
  2. Nakai, M., Goto, A., Nohara, T., Sugito, D. and Endo, T.
    Identification of the SecA protein homolog in pea chloroplasts and its possible involvement in thylakoidal protein transport.
    J. Biol. Chem. 269 : 31338-33341 (1994). [PMID: 7989297]
  3. Scott, S.V. and Theg, S.M.
    A new chloroplast protein import intermediate reveals distinct translocation machineries in the two envelope membranes: energetics and mechanistic implications.
    J. Cell Biol. 132 : 63-75 (1996). [PMID: 8567731]

[EC created 2000 as EC, transferred 2018 to EC]