... Published 20 09 by Blackwell Publishing, ISBN 97 8-1-4051-86 19- 3 (pb)and 97 8-1-4051 -93 35-1 (hb)Cargill / Writing Scientific Research Articles 97 81405186 193 _4_c15 Final Proof page 89 12.1.20 09 6:43pm ... Acad. Sci. USA, 97 , 499 1± 499 6.Udvardi, M.K. and Day, D.A. ( 199 7) Metabolite transport acrosssymbiotic membranes of legume nodules. Annu. Rev. PlantPhysiol. Plant Mol. Biol. 48, 493 ±523.Vert, ... andEide, D.J. ( 199 4) The fet4 gene encodes the low-af®nity Fe(II)transport protein of Saccharomyces cerevisiae. J. Biol. Chem.2 69, 26 092 ±26 099 .Dubois, E.and Grenson, M.( 197 9) Methylamine/ammoniumuptake...