反式-12-十八碳烯酸和顺式-9-十八碳烯酸竞争性沉积到蛋黄脂质中。
Competitive deposition of trans-12 and cis-9-octadecenoates into egg yolk lipids.
作者信息
Lanser A C, Emken E A
出版信息
Lipids. 1981 Jan;16(1):15-9. doi: 10.1007/BF02534915.
The deposition of trans-12-octadencenoate-12(13)-3H (12t-18:1-3H) was compared to cis-9-octadecenoate-10-14C (9c-18:1-14C) in the major egg yolk neutral lipids and phospholipids trans-12-Octadecenoate was preferentially incorporated into cholesteryl esters (CE), phosphatidylcholines (PC), and phosphatidylethanolamines (PE) but was discriminated against in triglycerides (TG). Isotopic ratios indicate that 5.9 and 5.6 times more 12t-18:1-3H than 9c-18:1-14C was esterified at the 1-acyl position of PE and PC, respectively. The combined 1- and 3-acyl positions of TG and the 2-acyl position of TG, PE and PC were each preferentially esterified with 9c-18:1-14C.
将反式-12-十八碳烯酸酯-12(13)-³H（12t-18:1-³H）与顺式-9-十八碳烯酸酯-10-¹⁴C（9c-18:1-¹⁴C）在主要蛋黄中性脂质和磷脂中的沉积情况进行了比较。反式-12-十八碳烯酸优先掺入胆固醇酯（CE）、磷脂酰胆碱（PC）和磷脂酰乙醇胺（PE）中，但在甘油三酯（TG）中则受到歧视。同位素比率表明，在PE和PC的1-酰基位置，酯化的12t-18:1-³H分别比9c-18:1-¹⁴C多5.9倍和5.6倍。TG的1-和3-酰基位置以及TG、PE和PC的2-酰基位置均优先被9c-18:1-¹⁴C酯化。
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