title: Isolation and Characterization of Coproporphyrin Produced by Four Subspecies of Bacillus thuringiensis.
abstract: It was found by using spectrophotometric, spectrofluorometric, and high-pressure liquid chromatography that four subspecies of Bacillus thuringiensis produce coproporphyrin. The porphyrin isomer was identified as coproporphyrin I for B. thuringiensis subsp. kurstaki (HD1). The porphyrin was isolated both from spores and from a variety of spent growth media. The quantity of porphyrin released by each Bacillus subspecies differed. The rank order of porphyrin production follows: B. thuringiensis subsp. kurstaki HD1 > B. thuringiensis subsp. thuringiensis HD27 > B. thuringiensis subsp. thuringiensis HD41 > B. thuringiensis subsp. darmstadiensis HD199.
authors.affiliation: Department of Biological Sciences, Wichita State University, Wichita, Kansas 67208.
authors.forename: R L
authors.initials: RL
authors.lastname: Harms
authors.forename: D R
authors.initials: DR
authors.lastname: Martinez
authors.forename: V M
authors.initials: VM
authors.lastname: Griego