Abstract

A 6.3 kDa polypeptide has been isolated from chlorosomes of the green photosynthetic bacterium Pelodictyon luteolum, and its complete amino acid sequence has been determined. It exhibits an overall homology of 30% to the Bchlc-binding protein of Chloroflexus aurantiacus. Preliminary results from the N-terminal sequence analyses of the analogous polypeptides isolated from Chlorobium limicola, Prosthecochloris aestuarii and chlorobium phaeovibrioides revealed a highly conserved sequence. This protein is suggested to be the Bchlc/e-binding polypeptide in the family of the Chlorobiaceae.

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