Department of Neuroscience, Faculty of Health and Medical Sciences, Maersk Tower 7.5, University of Copenhagen, Copenhagen, Denmark.
Center for Physiology and Pharmacology, Institute of Pharmacology, Medical University Vienna, Vienna, Austria.
J Biol Chem. 2021 Jan-Jun;296:100629. doi: 10.1016/j.jbc.2021.100629. Epub 2021 Apr 27.
The dopamine transporter utilizes the transmembrane sodium gradient to mediate reuptake of dopamine from the extracellular space. The dopamine transporter can form dimers and possibly also higher order structures in the plasma membrane, and this oligomerization has been implicated in both trafficking and transport. However, we still do not fully understand its biological importance. A study by Sorkina et al. now describes a series of small molecules that link transporter conformation to oligomerization and endocytosis, providing an interesting step forward in an intricate dance.
多巴胺转运体利用跨膜钠离子梯度将多巴胺从细胞外间隙重摄取到细胞内。多巴胺转运体可以在质膜中形成二聚体,并且可能还形成更高阶的结构,这种寡聚化与转运和运输都有关联。然而,我们仍不完全了解其生物学重要性。Sorkina 等人的一项研究现在描述了一系列小分子,它们将转运体构象与寡聚化和内吞作用联系起来,为这个复杂的舞蹈提供了一个有趣的前进步骤。