Growth Responses ofBifidobacterium bifidumto S-Sulfonic Acid-Type Pantetheine Related Compounds

Pteroylglutamic acid and related compounds.

A novel isoindoline, porritoxin sulfonic acid, from Alternaria porri and the structure-phytotoxicity correlation of its related compounds.

Novel zinniol-related compound 3, named porritoxin sulfonic acid, with an isoindoline skeleton was isolated from the culture liquid of Alternaria porri. The structure was determined to be 2-(2"-sulfoethyl)-4-methoxy-5-methyl-6-(3'-methyl-2'-butenyloxy)-2,3-dihydro-1H-isoindol-1-one. The phytotoxic activities of three isoindolines (1-3) were evaluated in a seedling-growth assay against stone lee...

Genistein-3′-sulfonic acid dihydrate

IN THE TITLE COMPOUND [SYSTEMATIC NAME: 5-(5,7-dihydr-oxy-4-oxo-4H-chromen-yl)-2-hydroxy-benzene-sulfonic acid dihydrate], C(15)H(10)O(8)S·2H(2)O, the benzopyran-one ring is not coplanar with the phenyl ring, the dihedral angle between them being 41.35 (3)°. No H atom was placed on the sulphonic acid group because it was not possible to distinguish between the two S=O bonds and the S-O bond. In...

Oleic Acid and Related Compounds as Growth Factors for Lactic Acid Bacteria*

It is well known that under special conditions certain fatty acids markedly affect growth of lactic acid bacteria. In the microbiological assay of riboflavin and of pantothenic acid, marked stimulation of the assay organism, Lactobacillus cusei, results from the presence of small amounts of lecithin or of fatty acids (1, 2) when these vitamins are present in suboptimal amounts. At higher levels...

Pantetheine-linked peptide intermediates in gramicidin S and tyrocidine biosynthesis.

To study the function of pantetheine in gramicidin S and tyrocidine biosynthesis, pepsin digests of the polymerizing enzymes, of which only the heavy ones contain pantetheine, were analyzed. The digests of gramicidin S enzymes charged with either [(14)C]proline or with D-phenylalanyl-[(14)C]proline, were analyzed by thin-layer chromatography; only the dipeptide showed a derivative associated wi...