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The lysozyme synthetized in Escherichia coli during the development of bacteriophage λ (λ-lysozyme) has been purified to homogeneity from either the whole cell just prior to lysis or from the lysate. The molecular weight of this protein was determined from its s20, w (2.06 S) and its D20, w (10.5 × 10-7 cm2·sec-1) as well as from sedimentation equilibrium data to be 17.9 × 103. Differences between the catalytic activities of λ-lysozyme and egg white lysozyme on a limited group of substrates have been observed.
Black et al. (1969) studied this question.
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