L-threo-β-hydroxyhistidine, an unprecedented iron(III) ion-binding amino acid in a pyoverdine-type siderophore from Pseudomonas fluorescens 244
Abstract
Nuclear magnetic resonance spectroscopy and mass spectrometric analysis of a unique pyoverdine-type siderophore isolated from the culture filtrate of Pseudomonas fluorescens 244 reveals a new natural amino acid, L-threo-β-hydroxyhistidine, that functions as an iron(III) bidentate ligand.