3gwv

Leucine transporter LeuT in complex with R-fluoxetine

spinqualitylabelsall models 3gwv, resolution 2.35Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3gwv is a 1 chain structure with sequence from Aquae. The August 2013 RCSB PDB Molecule of the Month feature on Serotonin Receptor by David Goodsell is 10.2210/rcsb_pdb/mom_2013_8. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: LEU, NA, RFX Related: 3gwu, 3gww Gene: aq_2077, LeuT, snf (AQUAE) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Sertraline and fluoxetine are selective serotonin re-uptake inhibitors (SSRIs) that are widely prescribed to treat depression. They exert their effects by inhibiting the presynaptic plasma membrane serotonin transporter (SERT). All SSRIs possess halogen atoms at specific positions, which are key determinants for the drugs' specificity for SERT. For the SERT protein, however, the structural basis of its specificity for SSRIs is poorly understood. Here we report the crystal structures of LeuT, a bacterial SERT homolog, in complex with sertraline, R-fluoxetine or S-fluoxetine. The SSRI halogens all bind to exactly the same pocket within LeuT. Mutation at this halogen-binding pocket (HBP) in SERT markedly reduces the transporter's affinity for SSRIs but not for tricyclic antidepressants. Conversely, when the only nonconserved HBP residue in both norepinephrine and dopamine transporters is mutated into that found in SERT, their affinities for all the three SSRIs increase uniformly. Thus, the specificity of SERT for SSRIs is dependent largely on interaction of the drug halogens with the protein's HBP. Antidepressant specificity of serotonin transporter suggested by three LeuT-SSRI structures.,Zhou Z, Zhen J, Karpowich NK, Law CJ, Reith ME, Wang DN Nat Struct Mol Biol. 2009 Jun;16(6):652-7. Epub 2009 May 10. PMID:19430461 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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