A further characterisation of the B890 light‐harvesting pigment—protein complex from Rhodospirillum rubrum strain S1

Authors:
  • RCRichard J. Cogdell
    Richard J. Cogdell
  • JLJ.GOrdon Lindsay
    J.GOrdon Lindsay
  • JVJane Valentine
    Jane Valentine
  • IDIrene Durant
    Irene Durant

Abstract
An intact B890 light‐harvesting pigment—protein complex has been obtained from Rhodospirillum rubrum strain S1. We show that this complex contains two types of low‐M r polypeptide. Both these polypeptides are present in the intact chromatophore membrane. Analysis of the pigment content of this complex suggests that per pair of polypeptides the complex contains 2 molecules of bacteriochlorophyll and one molecule of carotenoid.

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