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Further characterization of the photoreaction center from Ectothiorhodospira sp. detection of the H subunit by monoclonal antibodies

AuthorsLefebvre, Suzie; Picorel Castaño, Rafael ; Gingras, Gabriel
KeywordsPhotoreaction center
Monoclonal antibodies
Ectothiorhodospira sp.
Issue Date1990
PublisherBlackwell Publishing
CitationFEMS Microbiology Letters 65 (3): 247-252 (1990)
AbstractThe photoreaction center isolated from Ectothiorhodospira sp. is known to contain polypeptides L, M and C (a four heme c cytochrome) in a 1:1:1 molar ratio. As a test for the presence of a H subunit, Western blots of the chromatophore and photoreaction center polypeptides were reacted with a monoclonal antibody directed against the H subunit of Rhodospirillum rubrum. The chromatophores but not the isolated photoreaction center cross-reacted with this antibody. It is concluded that the H polypeptide is lost during the purification of the photoreaction center which, in its native state, therefore contains four polypeptides including a genuine H subunit.
Publisher version (URL)http://dx.doi.org/10.1016/0378-1097(89)90225-5
Identifiersdoi: 10.1016/0378-1097(89)90225-5
issn: 0378-1097
Appears in Collections:(EEAD) Artículos
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