Di‐myo‐inositol‐1, 1′‐phosphate: A new inositol phosphate isolated from Pyrococcus woesei

Abstract
A new inositol derivative could be isolated from the Archaeum Pyrococcus woesei and identified as di-myo-inositol-1,1′-phosphate by 1H, 31P NMR spectroscopy, mass spectrometry and thin layer chromatograpy. In P. woesel, this inositol phosphate represents the dominant counterion of K+ which ranges from 500 to 600 mM. The role of the potassium salt of di-myo-inositol-1,1′-phosphate as thermostabilizer is discussed.