The changes in bacterial density, total extracellular protein and activities of three extracellular enzymes were monitored during growth of wild-type biovar , a representative pleiotropic variant that produced decreased levels of the three extracellular enzymes, and a variant that produced only 5 of the 14 extracellular proteins secreted by the wild-type organism. Both variants produced less total extracellular protein than did the parental organism. SDS-PAGE of the proteins secreted by these hypoproducing variants showed that all of the extracellular proteins were produced in decreased amounts. No pleiotropic compensation in extracellular protein production was observed for these hypoproducing variants of biovar


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