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基本情報
登録情報 | データベース: PDB / ID: 8k3z | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Cryo-EM structure of CXCR4 in complex with CXCL12 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | IMMUNE SYSTEM / Chemokine receptor / CXCR4 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() C-X-C motif chemokine 12 receptor activity / telencephalon cell migration / chemokine (C-X-C motif) ligand 12 signaling pathway / negative regulation of leukocyte tethering or rolling / response to ultrasound / positive regulation of macrophage migration inhibitory factor signaling pathway / regulation of actin polymerization or depolymerization / chemokine receptor binding / Specification of primordial germ cells / CXCL12-activated CXCR4 signaling pathway ...C-X-C motif chemokine 12 receptor activity / telencephalon cell migration / chemokine (C-X-C motif) ligand 12 signaling pathway / negative regulation of leukocyte tethering or rolling / response to ultrasound / positive regulation of macrophage migration inhibitory factor signaling pathway / regulation of actin polymerization or depolymerization / chemokine receptor binding / Specification of primordial germ cells / CXCL12-activated CXCR4 signaling pathway / myosin light chain binding / myelin maintenance / CXCR chemokine receptor binding / C-X-C chemokine receptor activity / positive regulation of axon extension involved in axon guidance / positive regulation of vasculature development / positive regulation of dopamine secretion / Signaling by ROBO receptors / regulation of chemotaxis / induction of positive chemotaxis / Formation of definitive endoderm / C-C chemokine receptor activity / integrin activation / negative regulation of dendritic cell apoptotic process / negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage / cellular response to chemokine / chemokine-mediated signaling pathway / C-C chemokine binding / Developmental Lineage of Pancreatic Acinar Cells / positive regulation of monocyte chemotaxis / chemokine activity / Chemokine receptors bind chemokines / blood circulation / anchoring junction / dendritic cell chemotaxis / positive regulation of calcium ion import / cell leading edge / cellular response to cytokine stimulus / detection of temperature stimulus involved in sensory perception of pain / positive regulation of oligodendrocyte differentiation / Binding and entry of HIV virion / animal organ regeneration / detection of mechanical stimulus involved in sensory perception of pain / positive regulation of T cell migration / adenylate cyclase inhibitor activity / regulation of cell adhesion / Nuclear signaling by ERBB4 / positive regulation of protein localization to cell cortex / T cell migration / Adenylate cyclase inhibitory pathway / coreceptor activity / D2 dopamine receptor binding / response to prostaglandin E / G protein-coupled serotonin receptor binding / adenylate cyclase regulator activity / adenylate cyclase-inhibiting serotonin receptor signaling pathway / neurogenesis / positive regulation of endothelial cell proliferation / positive regulation of neuron differentiation / cellular response to forskolin / positive regulation of cell adhesion / regulation of mitotic spindle organization / axon guidance / adult locomotory behavior / ubiquitin binding / cell chemotaxis / Regulation of insulin secretion / growth factor activity / positive regulation of cholesterol biosynthetic process / G protein-coupled receptor binding / negative regulation of insulin secretion / calcium-mediated signaling / G protein-coupled receptor activity / defense response / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / brain development / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / response to peptide hormone / G-protein beta/gamma-subunit complex binding / centriolar satellite / response to virus / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / G protein-coupled acetylcholine receptor signaling pathway / intracellular calcium ion homeostasis / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / neuron migration / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / chemotaxis / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste 類似検索 - 分子機能 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
生物種 | ![]() ![]() ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.81 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Liu, Y.Z. / Liu, A.J. / Liao, Q.W. / Ye, R.D. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
資金援助 | 1件
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![]() | ![]() タイトル: Cryo-EM structure of monomeric CXCL12-bound CXCR4 in the active state. 著者: Yezhou Liu / Aijun Liu / Xinyu Li / Qiwen Liao / Weijia Zhang / Lizhe Zhu / Richard D Ye / ![]() 要旨: CXCR4 binding of its endogenous agonist CXCL12 leads to diverse functions, including bone marrow retention of hematopoietic progenitors and cancer metastasis. However, the structure of the CXCL12- ...CXCR4 binding of its endogenous agonist CXCL12 leads to diverse functions, including bone marrow retention of hematopoietic progenitors and cancer metastasis. However, the structure of the CXCL12-bound CXCR4 remains unresolved despite available structures of CXCR4 in complex with antagonists. Here, we present the cryoelectron microscopy (cryo-EM) structure of the CXCL12-CXCR4-Gi complex at an overall resolution of 2.65 Å. CXCL12 forms a 1:1 stoichiometry complex with CXCR4, following the two-site model. The first 8 amino acids of mature CXCL12 are crucial for CXCR4 activation by forming polar interactions with minor sub-pocket residues in the transmembrane binding pocket. The 3.2-Å distance between V3 of CXCL12 and the "toggle switch" W marks the deepest insertion among all chemokine-receptor pairs, leading to conformational changes of CXCR4 for G protein activation. These results, combined with functional assays and computational analysis, provide the structural basis for CXCR4 activation by CXCL12. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 250 KB | 表示 | ![]() |
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PDB形式 | ![]() | 195.8 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 48.3 KB | 表示 | |
CIF形式データ | ![]() | 73 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 36869MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
-タンパク質 , 2種, 2分子 AD
#1: タンパク質 | 分子量: 33826.059 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P61073 |
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#4: タンパク質 | 分子量: 7292.648 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P48061 |
-Guanine nucleotide-binding protein ... , 3種, 3分子 BCG
#2: タンパク質 | 分子量: 37198.656 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P62873 |
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#3: タンパク質 | 分子量: 40415.031 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P63096 |
#5: タンパク質 | 分子量: 6131.084 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P59768 |
-抗体 , 1種, 1分子 S
#6: 抗体 | 分子量: 26337.307 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() |
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-詳細
Has protein modification | Y |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: CXCR4-CXCL12-Gi-scFv16 complex / タイプ: COMPLEX / Entity ID: #6, #5, #2-#3, #1, #4 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: GOLD |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3次元再構成 | 解像度: 2.81 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 373108 / 対称性のタイプ: POINT |