通过脂质过氧化产生的N-化物改性酸乙醇胺是N-酸酸乙醇胺酸酶D的坚固基质
Reza Fadaei1, Annie C Bernstein2, Andrew N Jenkins3
1Department of Pharmacology, Vanderbilt University. Nashville, TN, USA, 37232.
bioRxiv : the preprint server for biology
|November 18, 2024
概括
N-酸酸乙醇胺-解脂酶D (NAPE-PLD) 可以解N-化物修饰PE (NALPEs),这些PE是在脂质过氧化过程中形成的. 这一发现将NAPE-PLD已知的功能扩展到N--PE合成之外.
科学领域:
- 生物化学 生物化学
- 脂质代谢 脂质代谢是什么
- 酶学 是一种酶学.
背景情况:
- 众所周知,N-酸酸乙醇胺-解脂酶D (NAPE-PLD) 的作用是化N-酸-PE (NAPEs).
- 酸乙烯胺 (PE) 的非酶性修饰通过反应性脂类化物形成N-化物修饰-PE (NALPEs).
- NAPE-PLD对NALPE的水解能力以前没有被描述.
研究的目的:
- 调查NAPE-PLD是否可以水解各种NALPE物种.
- 为了描述NAPE-PLD对NALPE的基质特异性,与正规NAPE基质相比.
- 探索NAPE-PLD在清除脂质过氧化产品中的潜在作用.
主要方法:
- 通过与PE反应化物合成了各种NALPE物种.
- 通过NAPE-PLD评估合成NALPE对水解的敏感性.
- 通过混合基质试验,比较了NALPE和正规NAPE的水解速率.
主要成果:
- NAPE-PLD证明了对一系列NALPE的水解活性,包括N-MDA-PE,N-BDA-PE,N-HNE-PE,N-ONE-PE,N-KODA-PE,以及N-IsoLG-PE.
- 在NALPE中,水解发生在各种连接类型中.
- 几种NALPE,如N-HNE-PE醇物种,在与N-linoleoyl-PE相比的速度下进行了水解.
结论:
- NAPE-PLD的基质库比以前所知的要广泛得多,包括NALPE.
- NAPE-PLD可能在清除脂质过氧化副产品方面发挥关键作用.
- 这些发现表明NAPE-PLD在NAPE生物合成和脂质过氧化管理中的双重功能.
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