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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Complete amino acid sequence of plastocyanin from a green alga, Enteromorpha prolifera.

The complete amino acid sequence of the plastocyanin from the green alga Enteromorpha prolifera has been determined by Edman degradation of the intact molecule and fragments produced by enzymatic cleavage of the polypeptide chain with chymotrypsin, Staphylococcus aureus protease, proline-specific endopeptidase, Lys-C endopeptidase and trypsin. The molecule consists of 98 amino acid residues with a calculated relative molecular mass of 10103. The amino acid sequence of E. prolifera plastocyanin shows a high degree of homology with those plastocyanins from other algae and higher plants. In particular, the four residues which are copper ligands in other plastocyanins and in the bacterial electron transport protein azurin (two histidines, one cysteine and one methionine) are conserved. Five out of the six acidic amino acid side-chains which create an 'acidic patch' on the surface of plastocyanin from Populus nigra var. italica [Colman, P. M. et al. (1978) Nature (Lond.) 272, 319-324] are conserved in the amino acid sequence of E. prolifera plastocyanin.[1]

References

  1. Complete amino acid sequence of plastocyanin from a green alga, Enteromorpha prolifera. Simpson, R.J., Moritz, R.L., Nice, E.C., Grego, B., Yoshizaki, F., Sugimura, Y., Freeman, H.C., Murata, M. Eur. J. Biochem. (1986) [Pubmed]
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