Acyl-CoA-binding proteins (ACBPs) are involved in binding and trafficking acyl-CoA esters in eukaryotic cells. ACBPs contain a well-conserved acyl-CoA-binding domain (ACBD). Their various functions have been characterized in the model plant Arabidopsis and, to a lesser extent, in rice. In this study, genome-wide detection and expression analysis of ACBPs were performed on Elaeis guineensis (oil palm), the most important oil crop in the world. Seven E. guineensis ACBPs were identified and classified into four groups according to their deduced amino acid domain organization. Phylogenetic analysis showed conservation of this family with other higher plants. All seven EgACBPs were expressed in most tissues while their differential expression suggests various functions in specific tissues. For example, EgACBP3 had high expression in inflorescences and stalks while ACBP1 showed strong expression in leaves. Because of the importance of E. guineensis as an oil crop, expression of EgACBPs was specifically examined during fruit development. EgACBP3 showed high expression throughout mesocarp development, while EgACBP1 had enhanced expression during rapid oil synthesis. In endosperm, both EgACBP1 and EgACBP3 exhibited increased expression during seed development. These results provide important information for further investigations on the biological functions of EgACBPs in various tissues and, in particular, their roles in oil synthesis.

中文翻译：

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油棕榈酰基辅酶A结合蛋白的表征及其基因表达与油合成的相关性。

酰基辅酶A结合蛋白（ACBP）参与真核细胞中酰基辅酶A酯的结合和运输。ACBP包含一个保守的酰基CoA结合域（ACBD）。它们的各种功能已在模型植物拟南芥中以及在较小程度上在水稻中得到了表征。在这项研究中，ACBPs的全基因组检测和表达分析是在世界上最重要的油料作物油枣（Elaeis guineensis）（油棕）上进行的。根据推导的氨基酸结构域，鉴定了七个吉尼斯大肠杆菌ACBP，并将其分为四类。系统发育分析表明该家族与其他高等植物的保护。所有七个EgACBPs都在大多数组织中表达，而它们的差异表达表明在特定组织中具有多种功能。例如，EgACBP3在花序和茎中高表达，而ACBP1在叶中高表达。由于几内亚大肠杆菌作为油料作物的重要性，因此在果实发育过程中特别检查了EgACBPs的表达。EgACBP3在整个中果皮发育过程中显示高表达，而EgACBP1在快速油脂合成过程中表达增强。在胚乳中，EgACBP1和EgACBP3均在种子发育过程中表现出增加的表达。这些结果为进一步研究EgACBPs在各种组织中的生物学功能，尤其是它们在油类合成中的作用提供了重要的信息。EgACBP3在整个中果皮发育过程中显示高表达，而EgACBP1在快速油脂合成过程中表达增强。在胚乳中，EgACBP1和EgACBP3均在种子发育过程中表现出增加的表达。这些结果为进一步研究EgACBPs在各种组织中的生物学功能，尤其是它们在油类合成中的作用提供了重要的信息。EgACBP3在整个中果皮发育过程中表现出高表达，而EgACBP1在快速油脂合成过程中表现出增强的表达。在胚乳中，EgACBP1和EgACBP3均在种子发育过程中表现出增加的表达。这些结果为进一步研究EgACBPs在各种组织中的生物学功能，尤其是它们在油类合成中的作用提供了重要的信息。