1M4Y:
reference: Isolation and characterization of the prokaryotic proteasome homolog HslVU (ClpQY) from Thermotoga maritima and the crystal structure of HslV., Song HK, Bochtler M, Azim MK, Hartmann C, Huber R, Ramachandran R, Biophys Chem 2003;100(1-3):437-52. PMID: 12646382

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