The E. colisiderophoreenterobactin, one of the strongest FeIII chelators known to date, is also capable of binding SiIV under physiological conditions. We report on the synthesis and structural characterization of the tris(catecholate) SiIV–enterobactin complex and its GeIV and TiIV analogues. Comparative structural analysis, supported by quantum‐chemical calculations, reveals the correlation between
Chemo-enzymatic syntheses of isotopically labelled L-amino acids
作者:Nicholas M. Kelly、Bridget C. O'Neill、John Probert、Gordon Reid、Rosamund Stephen、Ting Wang、Christine L. Willis、Peter Winton
DOI:10.1016/s0040-4039(00)78265-7
日期:1994.8
L-Alanine labelled with carbon-13 and nitrogen-15 has been prepared in good yield and high optical purity from achiral precursors using alanine dehydrogenase This versatile approach may be simply adapted for the preparation of a range of isotopically labelled amino acids and efficient syntheses of [15N]-labelled serine, valine, leucine and phenylalanine are described.
Conserved Enzymatic Cascade for Bacterial Azoxy Biosynthesis
作者:Jingkun Shi、Xin Zang、Zhijie Zhao、Zhuanglin Shen、Wei Li、Guiyun Zhao、Jiahai Zhou、Yi-Ling Du
DOI:10.1021/jacs.3c12018
日期:2023.12.13
hydrazine-azo-azoxy pathway. Additionally, by characterizing homologues of this enzyme pair from other azoxy metabolite pathways, we propose that this two-enzyme cascade could represent a conserved enzymaticstrategy for azoxy bond formation in bacteria. These findings provide significant mechanistic insights into biological N–N bond formation and should facilitate the targeted isolation of bioactive azoxy