Current Microbiology

, Volume 22, Issue 4, pp 225–230 | Cite as

Two types ofPropionibacterium avidum with different isomers of diaminopimelic acid

  • Mary E. Goodsell
  • Julianna Toth
  • John L. Johnson
  • Cecil S. Cummins


Of 38 strains ofPropionibacterium avidum, most fell into one of two groups. One group (20 strains) hadLl-diaminopimelic acid as the diaminoacid of peptidoglycan, did not ferment inositol, and reacted with serum to strain VPI 0576; the other group (11 strains) hadDl-diaminopimelic acid as the peptidoglycan diaminoacid, fermented inositol, and reacted with serum to strain VPI 0670. DNA sequence similarity studies showed that, while overall intergroup similarity was about 80%, within each group the sequence similarities were over 90%. Seven strains were anomalous and did not fit exactly into either group.

The results show that the isomer of diaminopimelic acid in peptidoglycan may differ in strains of a single species all of which show at least 80% DNA sequence similarity to each other.


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Copyright information

© Springer-Verlag New York Inc 1991

Authors and Affiliations

  • Mary E. Goodsell
    • 1
  • Julianna Toth
    • 1
  • John L. Johnson
    • 1
  • Cecil S. Cummins
    • 1
  1. 1.Department of Anaerobic MicrobiologyVirginia Polytechnic Institute and State UniversityBlacksburgUSA

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