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. 1985 Jul;4(7):1667–1672. doi: 10.1002/j.1460-2075.1985.tb03835.x

The `heavy' subunit of the photosynthetic reaction centre from Rhodopseudomonas viridis: isolation of the gene, nucleotide and amino acid sequence

H Michel 1, K A Weyer 1, H Gruenberg 1, F Lottspeich 1
PMCID: PMC554402  PMID: 16453623

Abstract

The gene coding for the `heavy' subunit of the photosynthetic reaction centre from Rhodopseudomonas viridis was isolated in an expression vector. Expression of the heavy subunit in Escherichia coli was detected with antibodies raised against crystalline reaction centres. The entire subunit, and not a fusion protein, was expressed in E. coli. The protein coding region of the gene was sequenced and the amino acid sequence derived. Part of the amino acid sequence was confirmed by chemical sequence analysis of the protein. The heavy subunit consists of 258 amino acids and its mol. wt. is 28 345. It possesses one membrane-spanning α-helical segment, as was revealed by the concomitant X-ray structure analysis.

Keywords: expression vector, membrane protein structure, photosynthesis, reaction centre, sequence

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Selected References

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