Two new carbapenem antibiotic-producing actinomycetes, the cell-walls of which contain LL-diaminopimelic acid and meso-diaminopimelic acid, were isolated from soil. The two strains were subjected to taxonomic studies, which involved morphological, cultural, physiological and chemotaxonomical characterization, the latter including the cell-wall chemo-type, whole-cell sugar composition, phospholi...
