National Institutes of Health/National Institute of Mental Health (NIH/NIMH)
NS095899
米国
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)
NS077983
米国
引用
ジャーナル: Cell / 年: 2021 タイトル: Structure and gating mechanism of the α7 nicotinic acetylcholine receptor. 著者: Colleen M Noviello / Anant Gharpure / Nuriya Mukhtasimova / Rico Cabuco / Leah Baxter / Dominika Borek / Steven M Sine / Ryan E Hibbs / 要旨: The α7 nicotinic acetylcholine receptor plays critical roles in the central nervous system and in the cholinergic inflammatory pathway. This ligand-gated ion channel assembles as a homopentamer, is ...The α7 nicotinic acetylcholine receptor plays critical roles in the central nervous system and in the cholinergic inflammatory pathway. This ligand-gated ion channel assembles as a homopentamer, is exceptionally permeable to Ca, and desensitizes faster than any other Cys-loop receptor. The α7 receptor has served as a prototype for the Cys-loop superfamily yet has proven refractory to structural analysis. We present cryo-EM structures of the human α7 nicotinic receptor in a lipidic environment in resting, activated, and desensitized states, illuminating the principal steps in the gating cycle. The structures also reveal elements that contribute to its function, including a C-terminal latch that is permissive for channel opening, and an anionic ring in the extracellular vestibule that contributes to its high conductance and calcium permeability. Comparisons among the α7 structures provide a foundation for mapping the gating cycle and reveal divergence in gating mechanisms in the Cys-loop receptor superfamily.
履歴
登録
2020年11月10日
登録サイト: RCSB / 処理サイト: RCSB
改定 1.0
2021年3月17日
Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: EM metadata / Data content type: EM metadata / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2021年3月17日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Database references / Derived calculations / Polymer sequence / Refinement description / Structure summary カテゴリ: atom_site / em_software ...atom_site / em_software / entity / entity_poly / entity_poly_seq / pdbx_branch_scheme / pdbx_nonpoly_scheme / pdbx_poly_seq_scheme / pdbx_struct_assembly_prop / pdbx_struct_conn_angle / pdbx_validate_close_contact / pdbx_validate_rmsd_angle / pdbx_validate_torsion / refine_ls_restr / software / struct / struct_conn / struct_mon_prot_cis / struct_ref_seq_dif / struct_sheet_range Item: _em_software.category / _entity.formula_weight ..._em_software.category / _entity.formula_weight / _entity_poly.pdbx_seq_one_letter_code / _entity_poly.pdbx_seq_one_letter_code_can / _entity_poly_seq.mon_id / _pdbx_branch_scheme.auth_asym_id / _pdbx_branch_scheme.auth_seq_num / _pdbx_nonpoly_scheme.auth_seq_num / _pdbx_poly_seq_scheme.auth_mon_id / _pdbx_poly_seq_scheme.mon_id / _pdbx_poly_seq_scheme.pdb_mon_id / _pdbx_struct_assembly_prop.value / _pdbx_struct_conn_angle.value / _pdbx_validate_close_contact.auth_asym_id_1 / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_rmsd_angle.angle_deviation / _pdbx_validate_rmsd_angle.angle_value / _pdbx_validate_torsion.phi / _pdbx_validate_torsion.psi / _refine_ls_restr.dev_ideal / _refine_ls_restr.number / _software.version / _struct.pdbx_descriptor / _struct_conn.pdbx_dist_value / _struct_mon_prot_cis.pdbx_omega_angle / _struct_sheet_range.beg_auth_comp_id / _struct_sheet_range.beg_auth_seq_id / _struct_sheet_range.beg_label_comp_id / _struct_sheet_range.beg_label_seq_id / _struct_sheet_range.end_auth_comp_id / _struct_sheet_range.end_auth_seq_id / _struct_sheet_range.end_label_comp_id / _struct_sheet_range.end_label_seq_id 解説: Sequence discrepancy 詳細: The sequence used for the original model was taken from the literature reference; it was created during quarantine and I did not have access to the lab-confirmed sequence. There are two amino ...詳細: The sequence used for the original model was taken from the literature reference; it was created during quarantine and I did not have access to the lab-confirmed sequence. There are two amino acids different between these two reference sequences. The correct sequence corresponds to UniProt code P36544, while the literature cites U40583.1. The amino acids have been changed accordingly. Provider: author / タイプ: Coordinate replacement
Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / カテゴリ: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name