- EMDB-12143: ASCT2 in the presence of the inhibitor ERA-21 in the outward-open... -
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データベース: EMDB / ID: EMD-12143
タイトル
ASCT2 in the presence of the inhibitor ERA-21 in the outward-open conformation.
マップデータ
Cryo-EM map of ASCT2 in the presence of the inhibitor ERA-21 at 3.37 A resolution in the outward-open conformation. Map was sharpened with a b factor of 173 A2
試料
複合体: ASCT2 in the presence of the inhibitor ERA-21 in the outward-open conformation.
タンパク質・ペプチド: Neutral amino acid transporter B(0)
キーワード
Solute carrier transporter / membrane protein / homology modeling / cancer metabolism / glutamine deprivation / cryo-EM
Netherlands Organisation for Scientific Research (NWO)
722.017.001
オランダ
Netherlands Organisation for Scientific Research (NWO)
740.018.016
オランダ
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01 GM108911
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
T32 CA078207
米国
National Science Foundation (NSF, United States)
1515028
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R15 GM135843-01
米国
Netherlands Organisation for Scientific Research (NWO)
714.018.003
オランダ
引用
ジャーナル: Proc Natl Acad Sci U S A / 年: 2021 タイトル: Rational design of ASCT2 inhibitors using an integrated experimental-computational approach. 著者: Rachel-Ann A Garibsingh / Elias Ndaru / Alisa A Garaeva / Yueyue Shi / Laura Zielewicz / Paul Zakrepine / Massimiliano Bonomi / Dirk J Slotboom / Cristina Paulino / Christof Grewer / Avner Schlessinger / 要旨: ASCT2 (SLC1A5) is a sodium-dependent neutral amino acid transporter that controls amino acid homeostasis in peripheral tissues. In cancer, ASCT2 is up-regulated where it modulates intracellular ...ASCT2 (SLC1A5) is a sodium-dependent neutral amino acid transporter that controls amino acid homeostasis in peripheral tissues. In cancer, ASCT2 is up-regulated where it modulates intracellular glutamine levels, fueling cell proliferation. Nutrient deprivation via ASCT2 inhibition provides a potential strategy for cancer therapy. Here, we rationally designed stereospecific inhibitors exploiting specific subpockets in the substrate binding site using computational modeling and cryo-electron microscopy (cryo-EM). The final structures combined with molecular dynamics simulations reveal multiple pharmacologically relevant conformations in the ASCT2 binding site as well as a previously unknown mechanism of stereospecific inhibition. Furthermore, this integrated analysis guided the design of a series of unique ASCT2 inhibitors. Our results provide a framework for future development of cancer therapeutics targeting nutrient transport via ASCT2, as well as demonstrate the utility of combining computational modeling and cryo-EM for solute carrier ligand discovery.
ダウンロード / ファイル: emd_12143.map.gz / 形式: CCP4 / 大きさ: 30.5 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Cryo-EM map of ASCT2 in the presence of the inhibitor ERA-21 at 3.37 A resolution in the outward-open conformation. Map was sharpened with a b factor of 173 A2