A new broad-spectrum aminoglycoside antibiotic complex, sporaricin. II. Taxonomic studies on the sporaricin producing strain Saccharopolyspora hirsuta subsp. Kobensis nov. subsp.

Morphological, cultural and physiological characteristics of a new nocardioform actinomycete are reported. The microorganism which produces the antibiotic complex sporaricin has been selectively isolated from a sample of soil obtained from Kobe City, Hyogo Prefecture, Japan. By whole-cell analysis of the actinomycete, meso-diaminopimelic acid, arabinose and galactose were identified. But lipid LCN-A (lipid characteristic of Nocardia) and nocardomycolic acid were not detected. The taxonomic characteristics of this strain is closely related to the genus of Saccharopolyspora, described by LACEY and GOODFELLOW. Based on the taxonomic comparison with Saccharopolyspora hirsuta ATCC 27875, the strain was considered to be a subspecies of Saccharopolyspora hirsuta. Therefore, the proposed subspecies is named Saccharopolyspora hirsuta subsp. kobensis.