Schmutz E, Hennig S, Li SM, Heide L
(2004).
Identification of a topoisomerase IV in actinobacteria: purification and characterization of ParYR and GyrBR from the coumermycin A1 producer Streptomyces rishiriensis DSM 40489.
Schmutz E, Steffensky M, Schmidt J, Porzel A, Li SM, Heide L
(2003).
An unusual amide synthetase (CouL) from the coumermycin A1 biosynthetic gene cluster from Streptomyces rishiriensis DSM 40489.