Department of Chemistry and Phytotechnology Research Center, Michigan Technological University, Houghton, Michigan 49931-1295.
Plant Physiol. 1992 Apr;98(4):1498-501. doi: 10.1104/pp.98.4.1498.
The structure of phosphatidylinositol in barley (Hordeum vulgare) aleurone layers was investigated by chemical degradation. In vivo myo-[2-(3)H]inositol-labeled phosphatidylinositol was first converted to glycerophosphoinositol and, subsequently, after removal of the glycerol moiety, to inositol monophosphate. Here, we present data that show that, in addition to the commonly occurring 1,2-diacylglycero-3-(d-myo-inositol-1-phosphate), barley aleurone cells contain a novel second isomer of phosphatidylinositol that differs in structure of the head group.
大麦糊粉层中磷脂酰肌醇的结构通过化学降解进行了研究。首先,用活体内标记的[2-(3)H]肌醇将磷脂酰肌醇转化为甘油磷酸肌醇,然后在除去甘油部分后转化为肌醇单磷酸。这里,我们提供的数据表明,除了常见的 1,2-二酰基甘油-3-(d-肌醇-1-磷酸)外,大麦糊粉层细胞还含有结构上不同于头部基团的新型第二异构体磷脂酰肌醇。