Coregulation of the syntheses of bacteriochlorophyll and pigment-binding proteins in Rhodobacter capsulatus |
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Authors: | Jörg Rödig S Jock G Klug |
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Institution: | (1) Institut für Mikrobiologie und Molekularbiologie, Frankfurter Strasse 107, D-35392 Giessen, Germany e-mail: gabriele.klug@mikro.bio.uni-giessen.de Tel. +49-641-9935542; Fax +49-641-9935549, DE |
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Abstract: | We quantified the expression of the puf and puc operons, which encode pigment binding proteins, in a number of strains of Rhodobacter capsulatus that have defects in genes affecting different steps of bacteriochlorophyll biosynthesis. Our results show that these mutations
have a very similar effect on puf and puc expression. This suggests that the reduced expression of genes encoding pigment-binding proteins is due neither to the accumulation
of a specific intermediate of bacteriochlorophyll synthesis nor to the lack of an early intermediate, but is rather the result
of the lack of a very late intermediate or the bacteriochlorophyll molecule itself.
Received: 14 September 1998 / Accepted: 29 December 1998 |
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