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-Structure paper
| タイトル | Structural insights into the lysophospholipid brain uptake mechanism and its inhibition by syncytin-2. |
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| ジャーナル・号・ページ | Nat Struct Mol Biol, Vol. 29, Issue 6, Page 604-612, Year 2022 |
| 掲載日 | 2022年6月16日 |
著者 | Maria Martinez-Molledo / Emmanuel Nji / Nicolas Reyes / ![]() |
| PubMed 要旨 | Brain development and function require uptake of essential omega-3 fatty acids in the form of lysophosphatidylcholine via major-facilitator superfamily transporter MFSD2A, a potential pharmaceutical ...Brain development and function require uptake of essential omega-3 fatty acids in the form of lysophosphatidylcholine via major-facilitator superfamily transporter MFSD2A, a potential pharmaceutical target to modulate blood-brain barrier (BBB) permeability. MFSD2A is also the receptor of endogenous retroviral envelope syncytin-2 (SYNC2) in human placenta, where it mediates cell-cell fusion and formation of the maternal-fetal interface. Here, we report a cryo-electron microscopy structure of the human MFSD2A-SYNC2 complex that reveals a large hydrophobic cavity in the transporter C-terminal domain to occlude long aliphatic chains. The transporter architecture suggests an alternating-access transport mechanism for lipid substrates in mammalian MFS transporters. SYNC2 establishes an extensive binding interface with MFSD2A, and a SYNC2-soluble fragment acts as a long-sought-after inhibitor of MFSD2A transport. Our work uncovers molecular mechanisms important to brain and placenta development and function, and SYNC2-mediated inhibition of MFSD2A transport suggests strategies to aid delivery of therapeutic macromolecules across the BBB. |
リンク | Nat Struct Mol Biol / PubMed:35710838 |
| 手法 | EM (単粒子) |
| 解像度 | 3.6 Å |
| 構造データ | EMDB-12935, PDB-7oix: |
| 化合物 | ![]() ChemComp-NAG: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / human membrane protein / MFS transporter / human endogenous retroviral protein / syncytin |
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