1887

Abstract

Forty strains of (Schroeter) Migula isolated from clinical specimens and producing a water-soluble brown pigment on peptone media were compared with the neotype and nine other non-brown strains of The brown pigment is formed from either tyrosine or phenylalanine through the accumulation of homogentisic acid and has no identity with DOPA melanin. A new term, “pyomelanin,” is proposed for this brown pigment synthesized by certain strains of Although the pyomelanin strains share the attributes of the species, some of them have a more limited capacity with regard to certain biochemical reactions than the neotype strain of A careful examination is required to identify these aberrant strains. Actively growing cells of pyomelanin strains converted tyrosine to pyomelanin, but tyrosine itself does not appear to serve as a sole source of carbon and nitrogen for growth. A simple method of differentiating pyomelanin-producing strains of from pyorubin-producing strains is presented. To recognize properly the species, the attributes of pyomelanin strains should be included in descriptions of

Loading

Article metrics loading...

/content/journal/ijsem/10.1099/00207713-22-2-53
1972-04-01
2020-01-27
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/ijsem/10.1099/00207713-22-2-53
Loading

Most cited articles

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error