Synthesis of sedoheptulose from non-dialyzable, endogenous substrates in mammalian tissue extracts
作者:Paul P. Hipps、Karen Ackermann、William H. Holland、William R. Sherman
DOI:10.1016/s0008-6215(00)84689-3
日期:1981.10
possible precursors of the sedoheptulose. The reaction was stimulated by NAD+. Evidence is presented to show that non-dialyzable sedoheptulose 7-phosphate may be the endogenous precursor. These results show that care must be exercised when using crude enzyme preparations and extremely sensitive analytical methods so that chromatographically unresolved products formed from non-dialyzable, endogenous substrates
在透析的大鼠和牛组织匀浆中,观察到以庚二糖的形成率为12-120 nmol / g组织/ h。通过气相色谱保留时间和质谱鉴定该化合物。由D- [14C]果糖6-磷酸酯和D-赤藓糖4-磷酸酯制备[14C]-七庚糖标准品,用于放射性气相色谱分析,以研究七聚庚糖的可能前体。NAD +刺激反应。证据表明不可透析的七庚糖七磷酸可能是内源性前体。这些结果表明,在使用粗制酶制剂和极其敏感的分析方法时必须格外小心,以免色谱分离出不可透析的产物,