Influence of threonine exporters on threonine production in Escherichia coli - Kruse, Daniela; Krämer, Reinhard; Eggeling, Lothar; Rieping, M.; Pfefferle, W.; Tchieu, J. H.; Chung, Y. J.; Saier Jr., Milton H.; Burkovski, Andreas (Applied Microbiology and Biotechnology, 2002)