Melanin and novel melanin precursors from Aeromonas media
نویسندگان
چکیده
منابع مشابه
Melanin, melanin "ghosts," and melanin composition in Cryptococcus neoformans.
Melanin synthesis is associated with virulence for the pathogenic fungus Cryptococcus neoformans. Exposure of nonmelanized C. neoformans 4067 cells to 4 M guanidinium isothiocyanate followed by 6 M HCl at 100 degrees C resulted in complete solubilization of cellular structures. However, exposure of melanized C. neoformans 24067 to the same conditions produced a suspension of black particles. An...
متن کاملDraft genome sequence of high-melanin-yielding Aeromonas media strain WS.
We sequenced the genome of the high-melanin-yielding Aeromonas media strain WS and then analyzed genes potentially involved in melanin formation. The 4.2-Mb draft genome carries multiple genes responsible for pyomelanin synthesis and other candidate genes identified in our separate study, which have no homolog in other strains of Aeromonas species.
متن کاملIsolation, Characterization of Melanin Producing Organism and Extraction of Melanin
Melanin producing organism was isolated from a soil sample of Ahmednagar district, Maharashtra using Tyrosine casein media. The isolated organism’s morphology and spore arrangement was studied. The isolated organism was suspected to belong to the genus Streptomyces. Parameter optimization of the Tyrosine casein media with respect to carbon and nitrogen source was done. Starch and L-glycine were...
متن کاملMelanin, and Cleistothecia
A mutation in Aspergillus nidulans led to a loss of both melanin and ca-(1,3)glucan, a major wall polysaccharide. In addition, the mutation prevented the formation of cleistothecia. Mutant walls contained increased amounts of ,B(1,3)-glucan and galactose polymers, and electron micrographs indicated that they had lost the outermost wall layer. Such walls were more readily digested by lytic enzym...
متن کاملIdentification and Molecular Characterization of the Homogentisate Pathway Responsible for Pyomelanin Production, the Major Melanin Constituents in Aeromonas media WS
The pigmentation of many Aeromonas species has been thought to be due to the production of a L-DOPA (L-3,4-dihydroxyphenylalanine) based melanin. However, in this study we found that although L-DOPA synthesis occurs in the high-melanin-yielding Aeromonas media strain WS, it plays a minor, if any, role in pigmentation. Instead, the pigmentation of A. media strain WS is due to the production of p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1998
ISSN: 0378-1097
DOI: 10.1016/s0378-1097(98)00495-9