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The multienzyme gramicidin S synthetase 2, composed of one polypeptide chain, was treated with trypsin and chymotrypsin to give fragments retaining partial enzyme activities. Previously, a tryptic fragment of this multienzyme has been identified as a structural and functional domain. In this study two more fragments, activating Leu and Val, respectively,(More)
The multienzyme gramicidin S synthetase 2 was treated with trypsin to obtain fragments capable of activating proline. Three different active fragments were detected. The course of proteolysis was simulated by using a concentration range of trypsin; the cleavage pattern indicated that one of the fragments was particularly stable. This fragment was purified(More)
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