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Lund, T. et al.

Lund, Granum,

The 105-kDa protein component of Bacillus cereus non-haemolytic enterotoxin (Nhe) is a metalloprotease with gelatinolytic and collagenolytic activity.

A sequence of 91 amino acids residues, probably starting from the N-terminal of the mature protein, was determined for the 105-kDa protein of the non-haemolytic enterotoxin of Bacillus cereus. The last part of this sequence was similar to parts of the N-terminal portions of two collagenases of Clostridium histolyticum and Clostridium perfringens. Zymography, with intact collagen fibril and gelatin as substrates, showed that the 105-kDa protein had collagenolytic and gelatinolytic activity. The 105-kDa protein also showed activity against a typical collagenase substrate, azocoll, and was inhibited by EDTA and 1,10-phenanthroline. We conclude that the 105-kDa protein is a collagenase.[1]

References

The 105-kDa protein component of Bacillus cereus non-haemolytic enterotoxin (Nhe) is a metalloprotease with gelatinolytic and collagenolytic activity. Lund, T., Granum, P.E. FEMS Microbiol. Lett. (1999) [Pubmed]

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