7ugx | pdb_00007ugx

Asp-bound GltPh RSMR mutant in IFS-B1 state

spinqualitylabelsall models 7ugx, resolution 2.96Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7ugx is a 1 chain structure with sequence from Pyrococcus horikoshii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 2.96Å Ligands: ASP, EFC, NA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function GLT_PYRHO Sodium-dependent, high-affinity amino acid transporter that mediates aspartate uptake (PubMed:17435767, PubMed:19380583, PubMed:17230192, Ref.11). Has only very low glutamate transport activity (PubMed:19380583, PubMed:17230192). Functions as a symporter that transports one amino acid molecule together with two or three Na(+) ions, resulting in electrogenic transport (PubMed:17435767, PubMed:19380583, Ref.11). Na(+) binding enhances the affinity for aspartate (PubMed:19380583, Ref.11). Mediates Cl(-) flux that is not coupled to amino acid transport; this avoids the accumulation of negative charges due to aspartate and Na(+) symport (PubMed:17435767). In contrast to mammalian homologs, transport does not depend on pH or K(+) ions (PubMed:19380583). [PDB:4P19] Publication Abstract from PubMed Limited chemical shift dispersion represents a significant barrier to studying multistate equilibria of large membrane proteins by (19)F NMR. We describe a novel monofluoroethyl (19)F probe that dramatically increases the chemical shift dispersion. The improved conformational sensitivity and line shape enable the detection of previously unresolved states in one-dimensional (1D) (19)F NMR spectra of a 134 kDa membrane transporter. Changes in the populations of these states in response to ligand binding, mutations, and temperature correlate with population changes of distinct conformations in structural ensembles determined by single-particle cryo-electron microscopy (cryo-EM). Thus, (19)F NMR can guide sample preparation to discover and visualize novel conformational states and facilitate image analysis and three-dimensional (3D) classification. Environmentally Ultrasensitive Fluorine Probe to Resolve Protein Conformational Ensembles by (19)F NMR and Cryo-EM.,Huang Y, Reddy KD, Bracken C, Qiu B, Zhan W, Eliezer D, Boudker O J Am Chem Soc. 2023 Apr 19;145(15):8583-8592. doi: 10.1021/jacs.3c01003. Epub , 2023 Apr 6. PMID:37023263 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Symporter 3D structures

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