title: Characterization of a coproporphyrin-protein complex from Rhodobacter capsulatus.
abstract: Rhodobacter capsulatus strain AJB530 excretes large amounts of coproporphyrin into the culture supernatant. The coproporphyrin was precipitable with ammonium sulfate, suggesting that it was part of a macromolecular complex. Analysis of an ammonium sulfate fraction indicated that the coproporphyrin was bound to a 66-kDa protein with a pI' of 4.0. The same protein was found in the culture supernatant of the bch+ strain PAS100.
authors.affiliation: Department of Microbiology, Louisiana State University, Baton Rouge 70803.
authors.forename: A J
authors.initials: AJ
authors.lastname: Biel
mesh_terms: D001426:Bacterial Proteins / Q000302:isolation & purification*; D003306:Coproporphyrins / Q000302:isolation & purification* / Q000378:metabolism; D005453:Fluorescence; D007525:Isoelectric Focusing; D016354:Rhodobacter capsulatus / Q000032:analysis*
chemical_list: D001426:Bacterial Proteins; D003306:Coproporphyrins