登録情報 データベース : EMDB / ID : EMD-71399 ダウンロードとリンクタイトル CryoEM structure of integrin alpha4beta7 bound to MAdCAM-1 マップデータSharpened, locally-refined map of integrin alpha4beta7 bound to MAdCAM-1 詳細 試料複合体 : Protein complex of integrin alpha4beta7 bound to MAdCAM-1タンパク質・ペプチド : Integrin alpha-4タンパク質・ペプチド : Integrin beta-7タンパク質・ペプチド : Mucosal addressin cell adhesion molecule 1リガンド : 2-acetamido-2-deoxy-beta-D-glucopyranoseリガンド : CALCIUM IONリガンド : MANGANESE (II) ION 詳細 キーワード a4b7 / gut adhesion / lymphocyte homing / membrane receptor / CELL ADHESION機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
clathrin-dependent extracellular exosome endocytosis / positive regulation of lymphocyte migration / diapedesis / integrin alphaE-beta7 complex / immune response in gut-associated lymphoid tissue / cell-matrix adhesion involved in ameboidal cell migration / integrin alpha4-beta7 complex / integrin binding involved in cell-matrix adhesion / integrin alpha4-beta1 complex / positive regulation of leukocyte tethering or rolling ... clathrin-dependent extracellular exosome endocytosis / positive regulation of lymphocyte migration / diapedesis / integrin alphaE-beta7 complex / immune response in gut-associated lymphoid tissue / cell-matrix adhesion involved in ameboidal cell migration / integrin alpha4-beta7 complex / integrin binding involved in cell-matrix adhesion / integrin alpha4-beta1 complex / positive regulation of leukocyte tethering or rolling / axonogenesis involved in innervation / neuron projection extension / leukocyte tethering or rolling / positive regulation of leukocyte migration / RUNX3 Regulates Immune Response and Cell Migration / protein antigen binding / cell-cell adhesion mediated by integrin / positive regulation of vascular endothelial cell proliferation / integrin complex / leukocyte migration / heterotypic cell-cell adhesion / cell adhesion mediated by integrin / endodermal cell differentiation / negative regulation of vasoconstriction / leukocyte cell-cell adhesion / cellular response to cytokine stimulus / receptor clustering / fibronectin binding / positive regulation of endothelial cell apoptotic process / Integrin cell surface interactions / substrate adhesion-dependent cell spreading / positive regulation of T cell migration / cell-matrix adhesion / coreceptor activity / B cell differentiation / cell adhesion molecule binding / integrin-mediated signaling pathway / Cell surface interactions at the vascular wall / cell-cell adhesion / integrin binding / cellular response to amyloid-beta / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / signaling receptor activity / growth cone / Potential therapeutics for SARS / cell adhesion / signaling receptor complex / immune response / focal adhesion / neuronal cell body / cell surface / signal transduction / extracellular exosome / metal ion binding / membrane / plasma membrane 類似検索 - 分子機能 Adhesion molecule, immunoglobulin-like / Mucosal addressin cell adhesion molecule 1 / Adhesion molecule, immunoglobulin-like / Integrin beta subunit, cytoplasmic domain / : / Integrin beta cytoplasmic domain / Integrin alpha Ig-like domain 3 / Integrin_b_cyt / EGF-like domain, extracellular / EGF-like domain ... Adhesion molecule, immunoglobulin-like / Mucosal addressin cell adhesion molecule 1 / Adhesion molecule, immunoglobulin-like / Integrin beta subunit, cytoplasmic domain / : / Integrin beta cytoplasmic domain / Integrin alpha Ig-like domain 3 / Integrin_b_cyt / EGF-like domain, extracellular / EGF-like domain / Integrin beta subunit, tail / Integrin beta tail domain superfamily / Integrin_B_tail / : / Integrins beta chain EGF (I-EGF) domain profile. / Integrin beta subunit, VWA domain / Integrin beta subunit / Integrin beta N-terminal / Integrin beta chain VWA domain / Integrin plexin domain / Integrins beta chain EGF (I-EGF) domain signature. / Integrin beta subunits (N-terminal portion of extracellular region) / Integrin alpha-2 / Integrin alpha Ig-like domain 1 / Integrin alpha chain, C-terminal cytoplasmic region, conserved site / Integrins alpha chain signature. / Integrin alpha chain / Integrin alpha beta-propellor / : / Integrin alpha Ig-like domain 2 / FG-GAP repeat profile. / Integrin alpha (beta-propellor repeats). / FG-GAP repeat / FG-GAP repeat / Integrin domain superfamily / Integrin alpha, N-terminal / PSI domain / domain found in Plexins, Semaphorins and Integrins / EGF-like domain signature 1. / EGF-like domain signature 2. / von Willebrand factor A-like domain superfamily / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold 類似検索 - ドメイン・相同性 Integrin alpha-4 / Integrin beta-7 / Mucosal addressin cell adhesion molecule 1 類似検索 - 構成要素生物種 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 : 3.05 Å 詳細 データ登録者Hollis JA / Campbell MG 資金援助 米国, 3件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R35GM147414 米国 National Science Foundation (NSF, United States) 米国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) T32GM008268 米国
引用ジャーナル : Sci Adv / 年 : 2025タイトル : Molecular exaptation by the integrin αI domain.著者 : Jeremy A Hollis / Matthew C Chan / Harmit S Malik / Melody G Campbell / 要旨 : Integrins bind ligands between their alpha (α) and beta (β) subunits and transmit signals through conformational changes. Early in chordate evolution, some α subunits acquired an "inserted" (I) ... Integrins bind ligands between their alpha (α) and beta (β) subunits and transmit signals through conformational changes. Early in chordate evolution, some α subunits acquired an "inserted" (I) domain that expanded integrin's ligand-binding repertoire but obstructed the ancestral ligand pocket, seemingly blocking conventional integrin activation. Here, we compare cryo-electron microscopy structures of apo and ligand-bound states of the I domain-containing αEβ integrin and the I domain-lacking αβ integrin to illuminate how the I domain intrinsically mimics an extrinsic ligand to preserve integrin function. We trace the I domain's evolutionary origin to an ancestral collagen-collagen interaction domain, identifying an ancient molecular exaptation that facilitated integrin activation immediately upon I domain insertion. Our analyses reveal the evolutionary and biochemical basis of expanded cellular communication in vertebrates. 履歴 登録 2025年6月24日 - ヘッダ(付随情報) 公開 2025年9月24日 - マップ公開 2025年9月24日 - 更新 2025年9月24日 - 現状 2025年9月24日 処理サイト : RCSB / 状態 : 公開
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