+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-34301 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | Cryo-EM structure of the human TRPC5 ion channel in complex with G alpha i3 subunits, class2 | |||||||||
マップデータ | ||||||||||
試料 |
| |||||||||
機能・相同性 | 機能・相同性情報 regulation of membrane hyperpolarization / phosphatidylserine exposure on apoptotic cell surface / negative regulation of dendrite morphogenesis / Role of second messengers in netrin-1 signaling / store-operated calcium channel activity / cation channel complex / negative regulation of adenylate cyclase activity / inositol 1,4,5 trisphosphate binding / actinin binding / GTP metabolic process ...regulation of membrane hyperpolarization / phosphatidylserine exposure on apoptotic cell surface / negative regulation of dendrite morphogenesis / Role of second messengers in netrin-1 signaling / store-operated calcium channel activity / cation channel complex / negative regulation of adenylate cyclase activity / inositol 1,4,5 trisphosphate binding / actinin binding / GTP metabolic process / TRPチャネル / dopamine receptor signaling pathway / clathrin binding / positive regulation of macroautophagy / Adenylate cyclase inhibitory pathway / positive regulation of axon extension / calcium channel complex / regulation of cytosolic calcium ion concentration / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / positive regulation of neuron differentiation / positive regulation of peptidyl-threonine phosphorylation / G protein-coupled receptor binding / calcium ion transmembrane transport / G-protein beta/gamma-subunit complex binding / calcium channel activity / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / neuron differentiation / ADP signalling through P2Y purinoceptor 12 / G alpha (z) signalling events / ADORA2B mediated anti-inflammatory cytokines production / GPER1 signaling / calcium ion transport / GDP binding / heterotrimeric G-protein complex / nervous system development / actin binding / midbody / ATPase binding / G alpha (i) signalling events / positive regulation of cytosolic calcium ion concentration / 成長円錐 / G alpha (s) signalling events / neuron apoptotic process / Extra-nuclear estrogen signaling / 細胞周期 / lysosomal membrane / 細胞分裂 / GTPase activity / 中心体 / neuronal cell body / 樹状突起 / positive regulation of cell population proliferation / 核小体 / GTP binding / ゴルジ体 / extracellular exosome / 核質 / 生体膜 / metal ion binding / 細胞膜 / 細胞質 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.91 Å | |||||||||
データ登録者 | Won J / Jeong H / Lee HH | |||||||||
資金援助 | 韓国, 1件
| |||||||||
引用 | ジャーナル: Nat Commun / 年: 2023 タイトル: Molecular architecture of the Gα-bound TRPC5 ion channel. 著者: Jongdae Won / Jinsung Kim / Hyeongseop Jeong / Jinhyeong Kim / Shasha Feng / Byeongseok Jeong / Misun Kwak / Juyeon Ko / Wonpil Im / Insuk So / Hyung Ho Lee / 要旨: G-protein coupled receptors (GPCRs) and ion channels serve as key molecular switches through which extracellular stimuli are transformed into intracellular effects, and it has long been postulated ...G-protein coupled receptors (GPCRs) and ion channels serve as key molecular switches through which extracellular stimuli are transformed into intracellular effects, and it has long been postulated that ion channels are direct effector molecules of the alpha subunit of G-proteins (Gα). However, no complete structural evidence supporting the direct interaction between Gα and ion channels is available. Here, we present the cryo-electron microscopy structures of the human transient receptor potential canonical 5 (TRPC5)-Gα complexes with a 4:4 stoichiometry in lipid nanodiscs. Remarkably, Gα binds to the ankyrin repeat edge of TRPC5 ~ 50 Å away from the cell membrane. Electrophysiological analysis shows that Gα increases the sensitivity of TRPC5 to phosphatidylinositol 4,5-bisphosphate (PIP), thereby rendering TRPC5 more easily opened in the cell membrane, where the concentration of PIP is physiologically regulated. Our results demonstrate that ion channels are one of the direct effector molecules of Gα proteins triggered by GPCR activation-providing a structural framework for unraveling the crosstalk between two major classes of transmembrane proteins: GPCRs and ion channels. | |||||||||
履歴 |
|
-構造の表示
添付画像 |
---|
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_34301.map.gz | 81.1 MB | EMDBマップデータ形式 | |
---|---|---|---|---|
ヘッダ (付随情報) | emd-34301-v30.xml emd-34301.xml | 19.2 KB 19.2 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_34301.png | 163 KB | ||
その他 | emd_34301_additional_1.map.gz emd_34301_additional_2.map.gz | 117.9 MB 117.7 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-34301 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-34301 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
---|---|
「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_34301.map.gz / 形式: CCP4 / 大きさ: 125 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ボクセルのサイズ | X=Y=Z: 1.088 Å | ||||||||||||||||||||
密度 |
| ||||||||||||||||||||
対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
|
-添付データ
-追加マップ: #2
ファイル | emd_34301_additional_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
投影像・断面図 |
| ||||||||||||
密度ヒストグラム |
-追加マップ: #1
ファイル | emd_34301_additional_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
投影像・断面図 |
| ||||||||||||
密度ヒストグラム |
-試料の構成要素
-全体 : Transient receptor potential
全体 | 名称: Transient receptor potentialTRPチャネル |
---|---|
要素 |
|
-超分子 #1: Transient receptor potential
超分子 | 名称: Transient receptor potential / タイプ: complex / ID: 1 / キメラ: Yes / 親要素: 0 / 含まれる分子: #1 |
---|---|
由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Short transient receptor potential channel 5
分子 | 名称: Short transient receptor potential channel 5 / タイプ: protein_or_peptide / ID: 1 詳細: residues 766,767(SR) restriction enzyme, XbaI, residues 768-773(LEVLFQ) protease cleavage site, HRV-3C コピー数: 4 / 光学異性体: LEVO |
---|---|
由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 89.951891 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: MAQLYYKKVN YSPYRDRIPL QIVRAETELS AEEKAFLNAV EKGDYATVKQ ALQEAEIYYN VNINCMDPLG RSALLIAIEN ENLEIMELL LNHSVYVGDA LLYAIRKEVV GAVELLLSYR RPSGEKQVPT LMMDTQFSEF TPDITPIMLA AHTNNYEIIK L LVQKRVTI ...文字列: MAQLYYKKVN YSPYRDRIPL QIVRAETELS AEEKAFLNAV EKGDYATVKQ ALQEAEIYYN VNINCMDPLG RSALLIAIEN ENLEIMELL LNHSVYVGDA LLYAIRKEVV GAVELLLSYR RPSGEKQVPT LMMDTQFSEF TPDITPIMLA AHTNNYEIIK L LVQKRVTI PRPHQIRCNC VECVSSSEVD SLRHSRSRLN IYKALASPSL IALSSEDPIL TAFRLGWELK ELSKVENEFK AE YEELSQQ CKLFAKDLLD QARSSRELEI ILNHRDDHSE ELDPQKYHDL AKLKVAIKYH QKEFVAQPNC QQLLATLWYD GFP GWRRKH WVVKLLTCMT IGFLFPMLSI AYLISPRSNL GLFIKKPFIK FICHTASYLT FLFMLLLASQ HIVRTDLHVQ GPPP TVVEW MILPWVLGFI WGEIKEMWDG GFTEYIHDWW NLMDFAMNSL YLATISLKIV AYVKYNGSRP REEWEMWHPT LIAEA LFAI SNILSSLRLI SLFTANSHLG PLQISLGRML LDILKFLFIY CLVLLAFANG LNQLYFYYET RAIDEPNNCK GIRCEK QNN AFSTLFETLQ SLFWSVFGLL NLYVTNVKAR HEFTEFVGAT MFGTYNVISL VVLLNMLIAM MNNSYQLIAD HADIEWK FA RTKLWMSYFD EGGTLPPPFN IIPSPKSFLY LGNWFNNTFC PKRDPDGRRR RRNLRSFTER NADSLIQNQH YQEVIRNL V KRYVAAMIRN SKTHEGLTEE NFKELKQDIS SFRYEVLDLL GNRKSRLEVL FQ |
-分子 #2: Guanine nucleotide-binding protein G(i) subunit alpha-3
分子 | 名称: Guanine nucleotide-binding protein G(i) subunit alpha-3 タイプ: protein_or_peptide / ID: 2 / 詳細: 6 histidine tag is inserted between M119 and T120. / コピー数: 4 / 光学異性体: LEVO |
---|---|
由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 41.399047 KDa |
組換発現 | 生物種: Escherichia coli K-12 (大腸菌) |
配列 | 文字列: MGCTLSAEDK AAVERSKMID RNLREDGEKA AKEVKLLLLG AGESGKSTIV KQMKIIHEDG YSEDECKQYK VVVYSNTIQS IIAIIRAMG RLKIDFGEAA RADDARQLFV LAGSAEEGVM HHHHHHTPEL AGVIKRLWRD GGVQACFSRS REYQLNDSAS Y YLNDLDRI ...文字列: MGCTLSAEDK AAVERSKMID RNLREDGEKA AKEVKLLLLG AGESGKSTIV KQMKIIHEDG YSEDECKQYK VVVYSNTIQS IIAIIRAMG RLKIDFGEAA RADDARQLFV LAGSAEEGVM HHHHHHTPEL AGVIKRLWRD GGVQACFSRS REYQLNDSAS Y YLNDLDRI SQSNYIPTQQ DVLRTRVKTT GIVETHFTFK DLYFKMFDVG GLRSERKKWI HCFEGVTAII FCVALSDYDL VL AEDEEMN RMHESMKLFD SICNNKWFTE TSIILFLNKK DLFEEKIKRS PLTICYPEYT GSNTYEEAAA YIQCQFEDLN RRK DTKEIY THFTCATDTK NVQFVFDAVT DVIIKNNLKE CGLY |
-分子 #3: PHOSPHATIDYLETHANOLAMINE
分子 | 名称: PHOSPHATIDYLETHANOLAMINE / タイプ: ligand / ID: 3 / コピー数: 4 / 式: PTY |
---|---|
分子量 | 理論値: 734.039 Da |
Chemical component information | ChemComp-PTY: |
-分子 #4: CHOLESTEROL HEMISUCCINATE
分子 | 名称: CHOLESTEROL HEMISUCCINATE / タイプ: ligand / ID: 4 / コピー数: 4 / 式: Y01 |
---|---|
分子量 | 理論値: 486.726 Da |
Chemical component information | ChemComp-Y01: |
-分子 #5: ZINC ION
分子 | 名称: ZINC ION / タイプ: ligand / ID: 5 / コピー数: 4 / 式: ZN |
---|---|
分子量 | 理論値: 65.409 Da |
-分子 #6: CALCIUM ION
分子 | 名称: CALCIUM ION / タイプ: ligand / ID: 6 / コピー数: 4 / 式: CA |
---|---|
分子量 | 理論値: 40.078 Da |
-分子 #7: (2S)-2-(hexadecanoyloxy)-3-hydroxypropyl (9Z)-octadec-9-enoate
分子 | 名称: (2S)-2-(hexadecanoyloxy)-3-hydroxypropyl (9Z)-octadec-9-enoate タイプ: ligand / ID: 7 / コピー数: 4 / 式: YZY |
---|---|
分子量 | 理論値: 594.949 Da |
Chemical component information | ChemComp-YZY: |
-分子 #8: GUANOSINE-5'-TRIPHOSPHATE
分子 | 名称: GUANOSINE-5'-TRIPHOSPHATE / タイプ: ligand / ID: 8 / コピー数: 4 / 式: GTP |
---|---|
分子量 | 理論値: 523.18 Da |
Chemical component information | ChemComp-GTP: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
---|---|
解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 8 |
---|---|
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | TFS GLACIOS |
---|---|
電子線 | 加速電圧: 200 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy / 最大 デフォーカス(公称値): 2.0 µm / 最小 デフォーカス(公称値): 1.0 µm |
撮影 | フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 平均電子線量: 40.0 e/Å2 |
-画像解析
初期モデル | モデルのタイプ: PDB ENTRY PDBモデル - PDB ID: |
---|---|
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.91 Å / 解像度の算出法: OTHER 詳細: We combined two different maps from the same dataset (D_1300031718_em-additional-volume_P1.map.V4 and D_1300031718_em-additional-volume_P2.map.V4) to generate a composite map (D_1300031718_em- ...詳細: We combined two different maps from the same dataset (D_1300031718_em-additional-volume_P1.map.V4 and D_1300031718_em-additional-volume_P2.map.V4) to generate a composite map (D_1300031718_em-volume_P1.map.V6). The density of the G protein area could not be visualized clearly in the consensus map of this EM dataset. Therefore, we performed focused classification and local refinement to improve the density of the G protein area using symmetry expanded particles with C4 symmetry imposition, which required more number of particles. Finally, the number of particles used to reconstruct additional volume data 1 (D_1300031718_em-additional-volume_P1.map.V4) is 5,344 and the number of particles used to reconstruct additional volume data 2 (D_1300031718_em-additional-volume_P2.map.V4) is 205,343. Furthermore, the resolution stated above is based on map resolution estimates calculated by a validation tool in Phenix, FSC (model) = 0.143. 使用した粒子像数: 5344 |