RT Journal Article SR Electronic(1) A1 MEYER, J. M. A1 ABDALLAH, M. A.YR 1978 T1 The Fluorescent Pigment of Pseudomonas fluorescens: Biosynthesis, Purification and Physicochemical Properties JF Microbiology, VO 107 IS 2 SP 319 OP 328 DO https://doi.org/10.1099/00221287-107-2-319 PB Microbiology Society, SN 1465-2080, AB The biosynthesis of a yellow–green, fluorescent, water-soluble pigment by Pseudomonas fluorescens occurred only when the bacteria were iron-deficient and was not directly influenced by the nature of the organic carbon source. The pigment formed a very stable Fe3+ complex and was purified in this form. Pseudomonas fluorescens produced only one molecular species of fluorescent pigment; however, its lability under mild alkaline conditions led to the formation of several pigmented decomposition products. The spectral properties of the pure pigment, its molecular weight (1500 ± 75) and its stability constant for Fe3+ (of the order of 1032) were determined. Both its biosynthesis and its chemical properties (formation of a stable Fe3+ complex) suggest that the fluorescent pigment is a desferrisiderophore., UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-107-2-319