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データを開く
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基本情報
| 登録情報 | ![]() | |||||||||
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| タイトル | Cryo-EM structure of aPlexinA1-19-43 Fab in complex with PlexinA1 dimer | |||||||||
マップデータ | Cryo-EM structure of aPlexinA1-19-43 Fab in complex with PlexinA1 dimer. Sharpened main map. | |||||||||
試料 |
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キーワード | Signalling / Fab / Complex / PROTEIN BINDING / PROTEIN BINDING-IMMUNE SYSTEM complex | |||||||||
| 機能・相同性 | 機能・相同性情報olfactory nerve formation / neuron projection guidance / dichotomous subdivision of terminal units involved in salivary gland branching / gonadotrophin-releasing hormone neuronal migration to the hypothalamus / Other semaphorin interactions / T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell / semaphorin receptor complex / SEMA3A-Plexin repulsion signaling by inhibiting Integrin adhesion / semaphorin receptor activity / CRMPs in Sema3A signaling ...olfactory nerve formation / neuron projection guidance / dichotomous subdivision of terminal units involved in salivary gland branching / gonadotrophin-releasing hormone neuronal migration to the hypothalamus / Other semaphorin interactions / T cell activation via T cell receptor contact with antigen bound to MHC molecule on antigen presenting cell / semaphorin receptor complex / SEMA3A-Plexin repulsion signaling by inhibiting Integrin adhesion / semaphorin receptor activity / CRMPs in Sema3A signaling / regulation of smooth muscle cell migration / RHOD GTPase cycle / RND1 GTPase cycle / neuron projection extension / semaphorin-plexin signaling pathway / Sema3A PAK dependent Axon repulsion / synapse assembly / regulation of cell migration / glutamatergic synapse / extracellular exosome / nucleoplasm / plasma membrane / cytosol 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: 3.33 Å | |||||||||
データ登録者 | Tian H / Fung CP | |||||||||
| 資金援助 | 香港, 1件
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引用 | ジャーナル: J Biol Chem / 年: 2026タイトル: A bispecific antibody designed to act as a NRP2/PLXNA1 agonist mimics anticancer activity of SEMA3F. 著者: Honglei Tian / Chun Po Fung / Luke Burman / Yeeting E Chong / Changdong Liu / Yanyan Geng / Lam Yang / Man Wai Chow / Yingyi Zhang / Kwok Wa Hugo Ho / Guang Zhu / Zhenguo Wu / Xiang-Lei Yang ...著者: Honglei Tian / Chun Po Fung / Luke Burman / Yeeting E Chong / Changdong Liu / Yanyan Geng / Lam Yang / Man Wai Chow / Yingyi Zhang / Kwok Wa Hugo Ho / Guang Zhu / Zhenguo Wu / Xiang-Lei Yang / Zhiwen Xu / Leslie A Nangle / ![]() 要旨: Neuropilin-2 (NRP2) is a pleiotropic receptor with diverse roles across biological systems. Recent work detailed its role as an immunomodulatory receptor target that is currently being explored in ...Neuropilin-2 (NRP2) is a pleiotropic receptor with diverse roles across biological systems. Recent work detailed its role as an immunomodulatory receptor target that is currently being explored in clinical development for interstitial lung diseases, establishing it as a viable therapeutic target. To mediate its diverse effects, NRP2 interacts with endogenous ligands, including semaphorins (SEMAs) and vascular endothelial growth factors, signaling via ligand-induced heterodimerization with various receptor families. One of these ligands, SEMA3F exhibits well-documented tumor-suppressive activities mediated through NRP2 and plexinA1 (PLXNA1). Despite its observed benefits, SEMA3F is not therapeutically viable due to the multifaceted nature of its functions through non-NRP2-mediated interactions, leading to concerns around potential toxicity. Here, we describe development of bispecific antibodies (bsAbs) that dimerize PLXNA1 and NRP2, selectively mimicking the beneficial aspects of SEMA3F signaling as a basis for a novel anticancer therapy. Using a single B cell-based mAb discovery platform, anti-PLXNA1 mAbs with diverse lineages were generated and combined with anti-NRP2 mAbs to produce over 200 PLXNA1-NRP2 bsAbs. Antibodies were screened in cell-based assays (receptor dimerization, phospho-AKT, oncogene expression, and cell proliferation), yielding one bsAb capable of mimicking NRP2-mediated SEMA3F activities in all assays. Structural studies revealed that this bsAb binds to PLXNA1/NRP2 at sites distinct from the SEMA3F-binding site, but in a manner that allows proper spacing for receptor complex formation and flexibility of conformational changes for signaling. This study demonstrates the potential of these receptors as targets for agonistic bsAbs development and provides the groundwork for further exploration in tumor models. | |||||||||
| 履歴 |
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
| マップデータ | emd_61131.map.gz | 79.1 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-61131-v30.xml emd-61131.xml | 28.1 KB 28.1 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_61131_fsc.xml | 9.3 KB | 表示 | FSCデータファイル |
| 画像 | emd_61131.png | 58.4 KB | ||
| Filedesc metadata | emd-61131.cif.gz | 8 KB | ||
| その他 | emd_61131_additional_1.map.gz emd_61131_half_map_1.map.gz emd_61131_half_map_2.map.gz | 41.7 MB 77.9 MB 77.9 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-61131 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-61131 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 9j4cMC M: このマップから作成された原子モデル 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 F&H 検索 |
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リンク
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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| 「今月の分子」の関連する項目 |
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マップ
| ファイル | ダウンロード / ファイル: emd_61131.map.gz / 形式: CCP4 / 大きさ: 83.7 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| 注釈 | Cryo-EM structure of aPlexinA1-19-43 Fab in complex with PlexinA1 dimer. Sharpened main map. | ||||||||||||||||||||||||||||||||||||
| 投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
| ボクセルのサイズ | X=Y=Z: 1.026 Å | ||||||||||||||||||||||||||||||||||||
| 密度 |
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
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-添付データ
-追加マップ: Cryo-EM structure of aPlexinA1-19-43 Fab in complex with...
| ファイル | emd_61131_additional_1.map | ||||||||||||
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| 注釈 | Cryo-EM structure of aPlexinA1-19-43 Fab in complex with PlexinA1 dimer. Raw Map | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
-ハーフマップ: Cryo-EM structure of aPlexinA1-19-43 Fab in complex with...
| ファイル | emd_61131_half_map_1.map | ||||||||||||
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| 注釈 | Cryo-EM structure of aPlexinA1-19-43 Fab in complex with PlexinA1 dimer. Half Map B | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
-ハーフマップ: Cryo-EM structure of aPlexinA1-19-43 Fab in complex with...
| ファイル | emd_61131_half_map_2.map | ||||||||||||
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| 注釈 | Cryo-EM structure of aPlexinA1-19-43 Fab in complex with PlexinA1 dimer. Half Map A | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
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試料の構成要素
-全体 : Dimer complex of Human Plexin-A1 27-710 with aPlexinA1-19-43 Fab ...
| 全体 | 名称: Dimer complex of Human Plexin-A1 27-710 with aPlexinA1-19-43 Fab binding |
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| 要素 |
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-超分子 #1: Dimer complex of Human Plexin-A1 27-710 with aPlexinA1-19-43 Fab ...
| 超分子 | 名称: Dimer complex of Human Plexin-A1 27-710 with aPlexinA1-19-43 Fab binding タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all 詳細: Fab fragments generated from cloning the variable region of PlexinA1 antibody generated from mouse, into Fab vector. Fab fragments and PlexinA1 27-710 are expressed and purified from CHO cells. |
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-超分子 #2: Dimer of Human Plexin-A1 27-710
| 超分子 | 名称: Dimer of Human Plexin-A1 27-710 / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1 |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
-超分子 #3: aPlexinA1-19-43 Fab
| 超分子 | 名称: aPlexinA1-19-43 Fab / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #2-#3 詳細: Heavy chain and light chain of aPlexinA1-19-43 Fab expressed and purified from CHO cells |
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| 由来(天然) | 生物種: ![]() |
-分子 #1: Plexin-A1
| 分子 | 名称: Plexin-A1 / タイプ: protein_or_peptide / ID: 1 / 詳細: Human Plexin A1 27 to 710 with His Tag / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 76.710734 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: EAGLPRAGGG SQPPFRTFSA SDWGLTHLVV HEQTGEVYVG AVNRIYKLSG NLTLLRAHVT GPVEDNEKCY PPPSVQSCPH GLGSTDNVN KLLLLDYAAN RLLACGSASQ GICQFLRLDD LFKLGEPHHR KEHYLSSVQE AGSMAGVLIA GPPGQGQAKL F VGTPIDGK ...文字列: EAGLPRAGGG SQPPFRTFSA SDWGLTHLVV HEQTGEVYVG AVNRIYKLSG NLTLLRAHVT GPVEDNEKCY PPPSVQSCPH GLGSTDNVN KLLLLDYAAN RLLACGSASQ GICQFLRLDD LFKLGEPHHR KEHYLSSVQE AGSMAGVLIA GPPGQGQAKL F VGTPIDGK SEYFPTLSSR RLMANEEDAD MFGFVYQDEF VSSQLKIPSD TLSKFPAFDI YYVYSFRSEQ FVYYLTLQLD TQ LTSPDAA GEHFFTSKIV RLCVDDPKFY SYVEFPIGCE QAGVEYRLVQ DAYLSRPGRA LAHQLGLAED EDVLFTVFAQ GQK NRVKPP KESALCLFTL RAIKEKIKER IQSCYRGEGK LSLPWLLNKE LGCINSPLQI DDDFCGQDFN QPLGGTVTIE GTPL FVDKD DGLTAVAAYD YRGRTVVFAG TRSGRIRKIL VDLSNPGGRP ALAYESVVAQ EGSPILRDLV LSPNHQYLYA MTEKQ VTRV PVESCVQYTS CELCLGSRDP HCGWCVLHSI CSRRDACERA DEPQRFAADL LQCVQLTVQP RNVSVTMSQV PLVLQA WNV PDLSAGVNCS FEDFTESESV LEDGRIHCRS PSAREVAPIT RGQGDQRVVK LYLKSKETGK KFASVDFVFY NCSVHQS CL SCVNGSFPCH WCKYRHVCTH NVADCAFLEG RVNVSEDCPQ ILHHHHHH UniProtKB: Plexin-A1 |
-分子 #2: Light chain of aPlexinA1-19-43 Fab
| 分子 | 名称: Light chain of aPlexinA1-19-43 Fab / タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 23.413873 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: QIVLTQSPAI LSASPGEKVT MSCSVSSSIT YMHWYQQKPG TSPKRWIYDT SKLASGVPAR FSGSGSGTSF SLTISNMEAE DAATYYCHQ RSSYPYSFGG GTKLEIKRAD AAPTVSIFPP SSEQLTSGGA SVVCFLNNFY PKDINVKWKI DGSERQNGVL N SWTDQDSK ...文字列: QIVLTQSPAI LSASPGEKVT MSCSVSSSIT YMHWYQQKPG TSPKRWIYDT SKLASGVPAR FSGSGSGTSF SLTISNMEAE DAATYYCHQ RSSYPYSFGG GTKLEIKRAD AAPTVSIFPP SSEQLTSGGA SVVCFLNNFY PKDINVKWKI DGSERQNGVL N SWTDQDSK DSTYSMSSTL TLTKDEYERH NSYTCEATHK TSTSPIVKSF NRNEC |
-分子 #3: Heavy chain of aPlexinA1-19-43 Fab
| 分子 | 名称: Heavy chain of aPlexinA1-19-43 Fab / タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 25.302014 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: EVQLQQSGPE LVKPGASVKI SCKASGYKFT ENYMDWVKQS HGESLEWIGD ISPDNGDTSY NQKFRDKATL TVDKSSSTAY MELRSLTSE DSAVYYCAQI IYYDYVGYAL DYWGQGTSVT VSSAKTTPPS VYPLAPGSAA QTNSMVTLGC LVKGYFPEPV T VTWNSGSL ...文字列: EVQLQQSGPE LVKPGASVKI SCKASGYKFT ENYMDWVKQS HGESLEWIGD ISPDNGDTSY NQKFRDKATL TVDKSSSTAY MELRSLTSE DSAVYYCAQI IYYDYVGYAL DYWGQGTSVT VSSAKTTPPS VYPLAPGSAA QTNSMVTLGC LVKGYFPEPV T VTWNSGSL SSGVHTFPAV LQSDLYTLSS SVTVPSSTWP SETVTCNVAH PASSTKVDKK IVPRDCGGSH HHHHH |
-実験情報
-構造解析
| 手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
| 試料の集合状態 | particle |
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試料調製
| 濃度 | 0.1 mg/mL |
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| 緩衝液 | pH: 7.4 / 詳細: 1x PBS 7.4 |
| グリッド | モデル: Quantifoil R2/2 / 材質: GOLD / メッシュ: 300 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 30 sec. |
| 凍結 | 凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 291.15 K / 装置: FEI VITROBOT MARK IV 詳細: To prepare cryo-grids, 3 ul samples were applied to glow discharged Quantifoil Au grids (R2/2, 300 mesh), which were subsequently blotted with filter paper (Ted Pella) for 3 seconds at 18oC ...詳細: To prepare cryo-grids, 3 ul samples were applied to glow discharged Quantifoil Au grids (R2/2, 300 mesh), which were subsequently blotted with filter paper (Ted Pella) for 3 seconds at 18oC and 100% humidity. The grids were immediately plunge frozen in liquid ethane using a FEI Vitrobot IV (ThermoFisher). |
| 詳細 | This sample is a 1:1 mixture of aPlexinA1-19-43 Fab in complex with PlexinA1 dimer. The sample was mono disperse. |
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電子顕微鏡法
| 顕微鏡 | FEI TITAN KRIOS |
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| 撮影 | フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 実像数: 1989 / 平均電子線量: 50.0 e/Å2 詳細: A total of 2,084 movies were acquired and imported into Cryo-SPARC using the following parameters: Raw pixel size 1.026 A, Accelerating Voltage 300 kV, Spherical Aberration 2.7 mm, and Total ...詳細: A total of 2,084 movies were acquired and imported into Cryo-SPARC using the following parameters: Raw pixel size 1.026 A, Accelerating Voltage 300 kV, Spherical Aberration 2.7 mm, and Total exposure dose 50 e/A^2. Motion correction and CTF estimation were performed using Full-frame Motion Correction and Patch CTF. After that, 1,989 micrographs were selected from the 2,084 micrographs based on average intensity (-10055.05 to 2041.77) |
| 電子線 | 加速電圧: 300 kV / 電子線源: OTHER |
| 電子光学系 | 照射モード: OTHER / 撮影モード: OTHER / 最大 デフォーカス(公称値): 2.5 µm / 最小 デフォーカス(公称値): 1.2 µm |
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
| 初期モデル |
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| 詳細 | Initial local fitting was done using Chimera X, followed by manual fitting using Coot. Finally it was refined using Phenix real space refinement | ||||||||||||
| 精密化 | 空間: REAL / プロトコル: AB INITIO MODEL | ||||||||||||
| 得られたモデル | ![]() PDB-9j4c: |
ムービー
コントローラー
万見について




キーワード
Homo sapiens (ヒト)
データ登録者
香港, 1件
引用






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