Analysis of glutamate exit in Escherichia coli

Abstract

E. coli B exhibits carrier mediated first order exit of glutamate with a half time of less than 4 min, similar to that observed in K 12 strains. Glutamate exit in both B and K 12 strains is inhibited by arsenite. Practically all of the radioactivity lost during exit by K 12 cells has been accounted for as glutamate in the cell filtrate.