8Y2D

Cryo-EM structure of human dopamine transporter in complex with dopamine

Summary for 8Y2D

• Entry DOI: 10.2210/pdb8y2d/pdb
• EMDB information: 38851
• Descriptor: Sodium-dependent dopamine transporter, L-DOPAMINE, SODIUM ION, ... (5 entities in total)
• Functional Keywords: human dopamine transporter in complex with dopamine, membrane protein
• Biological source: Homo sapiens (human)
• Total number of polymer chains: 1
• Total formula weight: 61582.78

Authors

Zhao, Y.,Li, Y. (deposition date: 2024-01-25, release date: 2024-08-14, Last modification date: 2024-10-16)

Primary citation

Li, Y.,Wang, X.,Meng, Y.,Hu, T.,Zhao, J.,Li, R.,Bai, Q.,Yuan, P.,Han, J.,Hao, K.,Wei, Y.,Qiu, Y.,Li, N.,Zhao, Y.
Dopamine reuptake and inhibitory mechanisms in human dopamine transporter.
Nature, 632:686-694, 2024

PubMed Abstract: The dopamine transporter has a crucial role in regulation of dopaminergic neurotransmission by uptake of dopamine into neurons and contributes to the abuse potential of psychomotor stimulants. Despite decades of study, the structure, substrate binding, conformational transitions and drug-binding poses of human dopamine transporter remain unknown. Here we report structures of the human dopamine transporter in its apo state, and in complex with the substrate dopamine, the attention deficit hyperactivity disorder drug methylphenidate, and the dopamine-uptake inhibitors GBR12909 and benztropine. The dopamine-bound structure in the occluded state precisely illustrates the binding position of dopamine and associated ions. The structures bound to drugs are captured in outward-facing or inward-facing states, illuminating distinct binding modes and conformational transitions during substrate transport. Unlike the outward-facing state, which is stabilized by cocaine, GBR12909 and benztropine stabilize the dopamine transporter in the inward-facing state, revealing previously unseen drug-binding poses and providing insights into how they counteract the effects of cocaine. This study establishes a framework for understanding the functioning of the human dopamine transporter and developing therapeutic interventions for dopamine transporter-related disorders and cocaine addiction.

PubMed: 39112701
DOI: 10.1038/s41586-024-07796-0

Experimental method

ELECTRON MICROSCOPY (2.8 Å)