Correction to: The Journal of Antibiotics (2015) 68, 322–327; published online 10 December 2014; doi:10.1038/ja.2014.162

The authors of the above article noticed and corrected the following error in the publication of The Journal of Antibiotics (2015) 68, 719; doi:10.1038/ja.2015.89.

In the Abstract and the ‘Description of Streptomyces lactacystinicus sp. nov.’ sub-section under the Results and Discussion section, DSM number for strain OM-6519 T was wrong. It should have been read OM-6519T (=NBRC 110082T, DSM 42136T).

Below is the corrected version of the subsection ‘Description of Streptomyces lactacystinicus sp. nov.’.

Description of Streptomyces lactacystinicus sp. nov.

Streptomyces lactacystinicus (lac.ta.cys.ti'ni.cus. N.L. n. lactacystinum, lactacystin; L. masc. suff. -icus, suffix used with the sense of pertaining to; N.L. masc. adj. lactacystinicus, pertaining to lactacystin, a proteasome inhibitor produced by the organism).

A Gram-positive aerobic actinomycete that forms straight spore chains. The spores are cylindrical with a rugose surface and size of 1.1–1.3 × 0.6–0.7 μm. Grows well on ISP 2, 3, 4, 5, 6 and 7, and forms brown colonies. Gray aerial mycelia are abundantly produced on ISP 2 and 3. A yellow soluble pigment is produced. Growth occurs at 15–37 °C and pH 5–10. No growth occurs at 5% (w/v) NaCl. Melanoid pigment is not produced. Milk is coagulated and peptonized. Nitrate is reduced to nitrite. Gelatin is not liquefied. Starch is hydrolyzed, but cellulose is not. d-Glucose, d-fructose, sucrose, l-aspartic acid, l-threonine, glycine, l-phenylalanine, l-arginine and l-ornithine are utilized as sole carbon and nitrogen sources. l-arabinose, d-xylose, raffinose, melibiose, d-mannitol, l-rhamnose, myo-inositol, l-methionine and d-valine are not utilized. Whole-cell hydrolysate contains LL-diaminopimelic acid as the diamino acid, in addition to glucose, ribose and rhamnose. The polar lipids mainly consist of phosphatidylethanolamine. The major menaquinones are MK-9 (H6) and MK-9 (H8). The predominant fatty acids are C16:0, anteiso-C15:0 and iso-C15:0. The G+C content of the genomic DNA of the type strain is 73 mol%. The type strain, OM-6519T (=NBRC 110082T, DSM 42136T), was isolated from soil from Inba, Chiba, Japan, and produces lactacystin, a proteasome inhibitor.