A psychrophilic strain Actinoplanes sp. 220.

The strain designated Actinoplanes sp. 220 differed in its characteristics from other strains of the genus Actinoplanes listed in Bergey's Manual (1974). The strain belongs to psychrophilic culture growing within the range of 0-30 degrees C. The optimal temperature for growth on yeast--malt agar is 10-23 degrees C. Cultures transferred at 23 and 28 degrees C differed in morphological and physiological properties, enzyme activity and pigmentation in standard media. Submerged culture transferred at 28 degrees C inhibited growth of Bacillus subtilis ATCC 6633 and ATCC 9945. LL-2,6-Diaminopimelic acid was chromatographically detected in the submerged mycelium of this culture. This compound was not found in the mycelium of the original culture transferred at 23 degrees C. The cultures did not substantially differ in the composition of other amino acids contained in larger quantities in the mycelium.