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. 1985;84(2):157-64.
doi: 10.1007/BF01872213.

Na+ (Li+)-proline cotransport in Escherichia coli

C C Chen, T Tsuchiya, Y Yamane, J M Wood, T H Wilson

Na+ (Li+)-proline cotransport in Escherichia coli

C C Chen et al. J Membr Biol. 1985.

Abstract

Na+ and Li+ were found to stimulate the transport of L-proline by cells of Escherichia coli induced for proline utilization. The gene product of the put P gene is involved in the expression of this transport activity since the put P+ strains CSH 4 and WG 148 show activity and the put P- strain RM 2 fails to show this cation coupled transport. The addition of proline was found to stimulate the uptake of Li+ and of Na+. Attempts to demonstrate proline stimulated H+ uptake were unsuccessful. It is concluded that the proline carrier (coded by the put P gene) is responsible for Na+ (or Li+)-proline cotransport.

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