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TitleThe architecture of GluD2 ionotropic delta glutamate receptor elucidated by cryo-EM.
Journal, issue, pagesJ Struct Biol, Vol. 211, Issue 2, Page 107546, Year 2020
Publish dateAug 1, 2020
AuthorsAnanth Prasad Burada / Rajesh Vinnakota / Janesh Kumar /
PubMed AbstractGluD2 receptor belongs to the orphan delta family of glutamate receptor ion channels. These receptors play key roles in synaptogenesis and synaptic plasticity and are associated with multiple ...GluD2 receptor belongs to the orphan delta family of glutamate receptor ion channels. These receptors play key roles in synaptogenesis and synaptic plasticity and are associated with multiple neuronal disorders like schizophrenia, autism spectrum disorder, cerebellar ataxia, intellectual disability, paraplegia, retinal dystrophy, etc. Despite the importance of these receptors in CNS, insights into full-length GluD2 receptor structure is missing till-date. Here we report cryo-electron microscopy structure of the rat GluD2 receptor in the presence of calcium ions and the ligand 7-chlorokynurenic acid, elucidating its 3D architecture. The structure reveals a non-swapped architecture at the extracellular amino-terminal (ATD), and ligand-binding domain (LBD) interface similar to that observed in GluD1; however, the organization and arrangement of the ATD and LBD domains in GluD2 are unique. While our results demonstrate that non-swapped architecture is conserved in the delta receptor family, they also highlight the differences that exist between the two member receptors; GluD1 and GluD2.
External linksJ Struct Biol / PubMed:32512155
MethodsEM (single particle)
Resolution8.8 Å
Structure data

0979

6lu9

EMDB-0979, PDB-6lu9:
Rat ionotropic Glutamate Delta-2 receptor in complex with 7-CKA and Calcium
Method: EM (single particle) / Resolution: 8.8 Å

Source
  • rattus norvegicus (Norway rat)
KeywordsMEMBRANE PROTEIN

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