The Journal of Antibiotics
Online ISSN : 1881-1469
Print ISSN : 0021-8820
ISSN-L : 0021-8820
A NEW ANTIBIOTIC, XK-46
SEIGO TAKASAWA, ISAO KAWAMOTO, RYO OKACHI, YOZO MACHIDA, TAKASHI NARA
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JOURNAL FREE ACCESS

1974 Volume 27 Issue 7 Pages 502-506

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Abstract

A new antibiotic XK-46 is produced optimally at 46°C by a thermophilic Streptomyces sp. MK-46. This antibiotic is a color indicator, red in acidic and blue in alkaline solutions, soluble in organic solvents and slightly soluble in water. XK-46 is active against Gram-positive bacteria and Proteus vulgaris, and strongly inhibits tyrosine hydroxylase activity.

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© Japan Antibiotics Research Association
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The Journal of Antibiotics, Series A

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