Article
dpp genes of Rhizobium leguminosarum specify uptake of delta-aminolevulinic acid.
Molecular plant-microbe interactions : MPMI - 1 Jan 2002
Carter R A, Yeoman K H, Klein A, Hosie A H F, Sawers G, Poole P S, Johnston A W B
Abstract excerpt
An operon with homology to the dppABCDF genes required to transport dipeptides in bacteria was identified in the N2-fixing symbiont, Rhizobium leguminosarum. As in other bacteria, dpp mutants were severely affected in the import of delta-aminolevulinic acid (ALA), a heme precursor. ALA uptake was antagonized by adding dipeptides, indicating that these two classes of molecule share the same transporter. Mutations...
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