Cavard Danièle
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Biochimie. 2002 May-Jun;84(5-6):485-8. doi: 10.1016/s0300-9084(02)01456-6.
A purified preparation of colicin A produced by Escherichia coli cells contained various forms of colicin A. Unfolding of the purified colicin A with urea provoked multimerization. Dimers, tetramers and hexamers of colicin A were identified.