Ornithine in Mucopeptide of Gram-positive Cell Walls


UNTIL recently it had been assumed on the basis of earlier work that the amino-acid composition of the mucopeptide in Gram-positive bacteria always included either αɛ-diaminopimelic acid or lysine. However, a re-examination of the cell walls of some strains of plant pathogenic corynebacteria showed that these two amino-acids may be replaced in some cases by ornithine or diaminobutyric acid; ornithine has also been found in the mucopeptide of Micrococcus radiodurans1.

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  1. 1

    Perkins, H. R., and Cummins, C. S., Nature, 201, 1105 (1964). Work, E., Nature, 201, 1107 (1964).

  2. 2

    Cummins, C. S., and Harris, H., Nature, 184, 831 (1959). Cummins, C. S., J. Gen. Microbiol., 28, 35 (1962).

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CUMMINS, C. Ornithine in Mucopeptide of Gram-positive Cell Walls. Nature 206, 1272 (1965) doi:10.1038/2061272a0

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