Rennenberg, HeinzHeinzRennenbergSteinkamp, ReinhardReinhardSteinkampPolle, AndreaAndreaPolle2018-11-122018-11-121980https://resolver.sub.uni-goettingen.de/purl?gro-2/56785During degradation of glutathione in tobacco suspension cultures substancial amounts of 5-oxo-proline are formed in vivo as well as in crude cell homogenates in vitro. The existance of a 5-oxo-prolinase that catalyzes the conversion of 5-oxo-proline to glutamic acid was demonstrated in tobacco cells, grown with glutathione as sole sulfur source.enjournal_article10.1515/znc-1980-9-1008