- PDB-1yjd: Crystal structure of human CD28 in complex with the Fab fragment ... -
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基本情報
登録情報
データベース: PDB / ID: 1yjd
タイトル
Crystal structure of human CD28 in complex with the Fab fragment of a mitogenic antibody (5.11A1)
要素
Fab fragment of 5.11A1 antibody heavy chain
Fab fragment of 5.11A1 antibody light chain
T-cell-specific surface glycoprotein CD28
キーワード
IMMUNE SYSTEM/SIGNALING PROTEIN / IgSF / CD28 homodimer / IMMUNE SYSTEM-SIGNALING PROTEIN COMPLEX
機能・相同性
機能・相同性情報
Nef mediated downregulation of CD28 cell surface expression / positive regulation of inflammatory response to antigenic stimulus / regulatory T cell differentiation / protein complex involved in cell adhesion / regulation of regulatory T cell differentiation / positive regulation of isotype switching to IgG isotypes / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection / positive regulation of CD4-positive, alpha-beta T cell proliferation / Co-stimulation by CD28 ...Nef mediated downregulation of CD28 cell surface expression / positive regulation of inflammatory response to antigenic stimulus / regulatory T cell differentiation / protein complex involved in cell adhesion / regulation of regulatory T cell differentiation / positive regulation of isotype switching to IgG isotypes / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection / positive regulation of CD4-positive, alpha-beta T cell proliferation / Co-stimulation by CD28 / CD28 dependent Vav1 pathway / positive regulation of interleukin-4 production / humoral immune response / positive regulation of interleukin-10 production / immunological synapse / CD28 dependent PI3K/Akt signaling / positive regulation of viral genome replication / positive regulation of T cell proliferation / coreceptor activity / T cell costimulation / positive regulation of interleukin-2 production / positive regulation of mitotic nuclear division / T cell activation / positive regulation of translation / positive regulation of cytokine production / phosphatidylinositol 3-kinase/protein kinase B signal transduction / apoptotic signaling pathway / Constitutive Signaling by Aberrant PI3K in Cancer / PIP3 activates AKT signaling / T cell receptor signaling pathway / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / transcription by RNA polymerase II / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / cell surface receptor signaling pathway / external side of plasma membrane / negative regulation of gene expression / positive regulation of gene expression / negative regulation of apoptotic process / protein kinase binding / cell surface / positive regulation of transcription by RNA polymerase II / identical protein binding / plasma membrane / cytosol 類似検索 - 分子機能
ジャーナル: Nat Immunol / 年: 2005 タイトル: Crystal structure of a soluble CD28-Fab complex. 著者: Edward J Evans / Robert M Esnouf / Raquel Manso-Sancho / Robert J C Gilbert / John R James / Chao Yu / Janet A Fennelly / Cheryl Vowles / Thomas Hanke / Björn Walse / Thomas Hünig / Poul ...著者: Edward J Evans / Robert M Esnouf / Raquel Manso-Sancho / Robert J C Gilbert / John R James / Chao Yu / Janet A Fennelly / Cheryl Vowles / Thomas Hanke / Björn Walse / Thomas Hünig / Poul Sørensen / David I Stuart / Simon J Davis / 要旨: Naive T cell activation requires signaling by the T cell receptor and by nonclonotypic cell surface receptors. The most important costimulatory protein is the monovalent homodimer CD28, which ...Naive T cell activation requires signaling by the T cell receptor and by nonclonotypic cell surface receptors. The most important costimulatory protein is the monovalent homodimer CD28, which interacts with CD80 and CD86 expressed on antigen-presenting cells. Here we present the crystal structure of a soluble form of CD28 in complex with the Fab fragment of a mitogenic antibody. Structural comparisons redefine the evolutionary relationships of CD28-related proteins, antigen receptors and adhesion molecules and account for the distinct ligand-binding and stoichiometric properties of CD28 and the related, inhibitory homodimer CTLA-4. Cryo-electron microscopy-based comparisons of complexes of CD28 with mitogenic and nonmitogenic antibodies place new constraints on models of antibody-induced receptor triggering. This work completes the initial structural characterization of the CD28-CTLA-4-CD80-CD86 signaling system.
履歴
登録
2005年1月14日
登録サイト: RCSB / 処理サイト: PDBJ
改定 1.0
2005年2月15日
Provider: repository / タイプ: Initial release
改定 1.1
2008年4月30日
Group: Version format compliance
改定 1.2
2011年7月13日
Group: Non-polymer description / Version format compliance