^Gottesman, S., Clark, W.P. and Maurizi, M.R. (1990). “The ATP-dependent Clp protease of Escherichia coli. Sequence of clpA and identification of a Clp-specific substrate”. J. Biol. Chem.265: 7886?7893. PMID2186030.
^Maurizi, M.R., Clark, W.P., Katayama, Y., Rudikoff, S., Pumphrey, J., Bowers, B. and Gottesman, S. (1990). “Sequence and structure of Clp P, the proteolytic component of the ATP-dependent Clp protease of Escherichia coli”. J. Biol. Chem.265: 12536?12545. PMID2197275.
^Maurizi, M.R., Thompson, M.W., Singh, S.K. and Kim, S.-H. (1994). “Endopeptidase Clp: the ATP-dependent Clp protease from Escherichia coli”. Methods Enzymol.244: 314?331. PMID7845217.
^Kessel, M. (1995). “, Maurizi,M.R., Kim, B., Kocsis, E., Trus, B., Singh, S.K. and Steven, A.C. Homology in structural organization between E. coli ClpAP protease and the eukaryotic 26 S proteasome”. J. Mol. Biol.250: 587?594. PMID7623377.