Two types ofPropionibacterium avidum with different isomers of diaminopimelic acid
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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.
- Two types ofPropionibacterium avidum with different isomers of diaminopimelic acid
Volume 22, Issue 4 , pp 225-230
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