Open AccessStructure of euhalothece‐362, a novel red‐shifted mycosporine‐like amino acid, from a halophilic cyanobacterium ( Euhalothece sp.)
Author(s) -
Volkmann Marc,
Gorbushina Anna A.,
Kedar Laura,
Oren Aharon
Publication year - 2006
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.2006.00203.x
Subject(s) - halophile , absorbance , glycine , mass spectrometry , alanine , chemistry , strain (injury) , amino acid , cyanobacteria , pigment , chromatography , botany , stereochemistry , bacteria , biology , biochemistry , organic chemistry , genetics , anatomy
The unicellular cyanobacterium Euhalothece sp. strain LK‐1, isolated from a gypsum crust on the bottom of a hypersaline saltern pond in Eilat, Israel, contains high concentrations of two mycosporine‐like amino acids with maximum absorbance at 331 and 362 nm when grown at high light intensities. The 331 nm‐absorbing compound has previously been identified as mycosporine‐2‐glycine. Here, we confirm this identification and document the elucidation of the structure of the 362 nm absorbing compound (‘euhalothece‐362’), using liquid chromatography/mass spectrometry combined with other techniques, as a novel compound, 2‐(E)‐3‐(E)‐2,3‐dihydroxyprop‐1‐enylimino‐mycosporine‐alanine.