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基本情報
登録情報 | データベース: PDB / ID: 1k8d | ||||||
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タイトル | crystal structure of the non-classical MHC class Ib Qa-2 complexed with a self peptide | ||||||
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![]() | IMMUNE SYSTEM / non-classical MHC class I / antigen presentation / preimplantation embryo devolepment gene product / Qa-2 / Q9 | ||||||
機能・相同性 | ![]() : / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / Formation of a pool of free 40S subunits / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / 5.8S rRNA binding / Major pathway of rRNA processing in the nucleolus and cytosol / Formation of a pool of free 40S subunits ...: / L13a-mediated translational silencing of Ceruloplasmin expression / SRP-dependent cotranslational protein targeting to membrane / Formation of a pool of free 40S subunits / GTP hydrolysis and joining of the 60S ribosomal subunit / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / 5.8S rRNA binding / Major pathway of rRNA processing in the nucleolus and cytosol / Formation of a pool of free 40S subunits / SRP-dependent cotranslational protein targeting to membrane / Major pathway of rRNA processing in the nucleolus and cytosol / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / L13a-mediated translational silencing of Ceruloplasmin expression / GTP hydrolysis and joining of the 60S ribosomal subunit / Endosomal/Vacuolar pathway / DAP12 interactions / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / ER-Phagosome pathway / DAP12 signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / antigen processing and presentation of peptide antigen via MHC class I / cellular defense response / Neutrophil degranulation / embryo implantation / liver regeneration / lumenal side of endoplasmic reticulum membrane / cellular response to iron(III) ion / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / negative regulation of forebrain neuron differentiation / peptide antigen assembly with MHC class I protein complex / regulation of erythrocyte differentiation / regulation of iron ion transport / MHC class I peptide loading complex / response to molecule of bacterial origin / HFE-transferrin receptor complex / T cell mediated cytotoxicity / antigen processing and presentation of endogenous peptide antigen via MHC class I / positive regulation of T cell cytokine production / MHC class I protein complex / negative regulation of neurogenesis / positive regulation of T cell mediated cytotoxicity / positive regulation of receptor-mediated endocytosis / cellular response to type II interferon / multicellular organismal-level iron ion homeostasis / cellular response to nicotine / phagocytic vesicle membrane / positive regulation of cellular senescence / negative regulation of epithelial cell proliferation / sensory perception of smell / negative regulation of neuron projection development / iron ion transport / T cell differentiation in thymus / protein refolding / large ribosomal subunit rRNA binding / protein homotetramerization / cytosolic large ribosomal subunit / amyloid fibril formation / intracellular iron ion homeostasis / cytoplasmic translation / learning or memory / structural constituent of ribosome / translation / external side of plasma membrane / synapse / nucleolus / structural molecule activity / Golgi apparatus / protein homodimerization activity / extracellular space / RNA binding / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() | ||||||
手法 | ![]() ![]() ![]() | ||||||
![]() | He, X. / Tabaczewski, P. / Ho, J. / Stroynowski, I. / Garcia, K.C. | ||||||
![]() | ![]() タイトル: Promiscuous antigen presentation by the nonclassical MHC Ib Qa-2 is enabled by a shallow, hydrophobic groove and self-stabilized peptide conformation. 著者: He, X. / Tabaczewski, P. / Ho, J. / Stroynowski, I. / Garcia, K.C. | ||||||
履歴 |
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Remark 999 | SEQUENCE THE CONFLICT IS BECAUSE THE STRUCTURE IS OF THE Q9 ALLELE OF QA-2, WHICH IS GLU AT THIS ...SEQUENCE THE CONFLICT IS BECAUSE THE STRUCTURE IS OF THE Q9 ALLELE OF QA-2, WHICH IS GLU AT THIS POSITION. THE P14429 REFERENCE IS FOR THE SEQUENCE OF THE Q7 ALLELE OF QA-2, WHICH IS GLN AT THIS POSITION. |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 96.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 73 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
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アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 1vacS S: 精密化の開始モデル |
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類似構造データ |
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リンク
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集合体
登録構造単位 | ![]()
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単位格子 |
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要素
#1: タンパク質 | 分子量: 31628.252 Da / 分子数: 1 断片: EXTRACELLULAR ALPHA-1, EXTRACELLULAR ALPHA-2, EXTRACELLULAR ALPHA-3 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
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#2: タンパク質 | 分子量: 11704.359 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
#3: タンパク質・ペプチド | 分子量: 1136.429 Da / 分子数: 1 / 断片: residues 137-145 / 由来タイプ: 合成 詳細: The peptide was chemically synthesized. The sequence of the peptide is naturally found in Mus musculus (mouse). 参照: UniProt: P14118, UniProt: P84099*PLUS |
#4: 水 | ChemComp-HOH / |
Has protein modification | Y |
-実験情報
-実験
実験 | 手法: ![]() |
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試料調製
結晶 | マシュー密度: 2.04 Å3/Da / 溶媒含有率: 39.74 % | ||||||||||||||||||||||||||||||||||||||||||
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結晶化 | 温度: 295 K / 手法: 蒸気拡散法, シッティングドロップ法 / pH: 7.2 詳細: PEG6000, HEPES, sodium chloride, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 295K | ||||||||||||||||||||||||||||||||||||||||||
結晶化 | *PLUS | ||||||||||||||||||||||||||||||||||||||||||
溶液の組成 | *PLUS
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-データ収集
回折 | 平均測定温度: 100 K |
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放射光源 | 由来: ![]() ![]() ![]() |
検出器 | タイプ: ADSC QUANTUM 4 / 検出器: CCD / 日付: 2000年1月1日 |
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
放射波長 | 波長: 1.08 Å / 相対比: 1 |
反射 | 解像度: 2.3→50 Å / Num. all: 16467 / Num. obs: 16467 / % possible obs: 97.6 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Rmerge(I) obs: 0.112 |
反射 シェル | 解像度: 2.3→2.38 Å / Rmerge(I) obs: 0.37 / % possible all: 99 |
反射 | *PLUS 最低解像度: 60 Å / Num. measured all: 61755 |
反射 シェル | *PLUS 最高解像度: 2.3 Å / % possible obs: 99 % / Rmerge(I) obs: 0.37 |
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解析
ソフトウェア |
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精密化 | 構造決定の手法: ![]() 開始モデル: PDB ENTRY 1VAC 解像度: 2.3→50 Å / Isotropic thermal model: Isotropic / 交差検証法: THROUGHOUT / σ(F): 0 / σ(I): 0 / 立体化学のターゲット値: Engh & Huber
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原子変位パラメータ | Biso mean: 30.2 Å2
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Refine analyze |
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精密化ステップ | サイクル: LAST / 解像度: 2.3→50 Å
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拘束条件 |
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LS精密化 シェル | 解像度: 2.3→2.38 Å / Rfactor Rfree error: 0.043
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ソフトウェア | *PLUS 名称: CNS / 分類: refinement | |||||||||||||||||||||||||
精密化 | *PLUS 最低解像度: 60 Å / σ(F): 0 / % reflection Rfree: 5 % | |||||||||||||||||||||||||
溶媒の処理 | *PLUS | |||||||||||||||||||||||||
原子変位パラメータ | *PLUS Biso mean: 30.2 Å2 | |||||||||||||||||||||||||
拘束条件 | *PLUS
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LS精密化 シェル | *PLUS Rfactor Rfree: 0.365 / Rfactor Rwork: 0.285 / Rfactor obs: 0.285 |