+検索条件
-Structure paper
タイトル | Structural snapshots of human PepT1 and PepT2 reveal mechanistic insights into substrate and drug transport across epithelial membranes. |
---|---|
ジャーナル・号・ページ | Sci Adv, Vol. 7, Issue 45, Page eabk3259, Year 2021 |
掲載日 | 2021年11月5日 |
著者 | Maxime Killer / Jiri Wald / Joanna Pieprzyk / Thomas C Marlovits / Christian Löw / |
PubMed 要旨 | The uptake of peptides in mammals plays a crucial role in nutrition and inflammatory diseases. This process is mediated by promiscuous transporters of the solute carrier family 15, which form part of ...The uptake of peptides in mammals plays a crucial role in nutrition and inflammatory diseases. This process is mediated by promiscuous transporters of the solute carrier family 15, which form part of the major facilitator superfamily. Besides the uptake of short peptides, peptide transporter 1 (PepT1) is a highly abundant drug transporter in the intestine and represents a major route for oral drug delivery. PepT2 also allows renal drug reabsorption from ultrafiltration and brain-to-blood efflux of neurotoxic compounds. Here, we present cryogenic electron microscopy (cryo-EM) structures of human PepT1 and PepT2 captured in four different states throughout the transport cycle. The structures reveal the architecture of human peptide transporters and provide mechanistic insights into substrate recognition and conformational transitions during transport. This may support future drug design efforts to increase the bioavailability of different drugs in the human body. |
リンク | Sci Adv / PubMed:34730990 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 3.5 - 4.1 Å |
構造データ | EMDB-13542, PDB-7pmw: EMDB-13543, PDB-7pmx: EMDB-13544, PDB-7pmy: EMDB-13545, PDB-7pn1: |
由来 |
|
キーワード | MEMBRANE PROTEIN / HsPepT1 / PepT1 / Peptide transporter / HsPepT2 / PepT2 |