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Resonance Raman spectra of the native Lhcb4 antenna protein are compared with those of a recombinant protein prepared by in vitro refolding of its polypeptide, over-expressed in Escherichia coli, with added pigments [Giuffra et al. (1996) Eur. J. Biochem. 238, 112–120]. The results indicate that the native pigment conformation is reproduced almost perfectly in the reconstituted protein, with only...