- PDB-2oqp: Solution structure of human interleukin-21 -
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基本情報
登録情報
データベース: PDB / ID: 2oqp
タイトル
Solution structure of human interleukin-21
要素
Interleukin-21
キーワード
CYTOKINE / FOUR HELIX BUNDLE / MULTIPLE CONFORMERS
機能・相同性
機能・相同性情報
interleukin-2 receptor binding / germinal center B cell differentiation / tyrosine phosphorylation of STAT protein / positive regulation of tissue remodeling / Interleukin-21 signaling / positive regulation of natural killer cell mediated cytotoxicity / cytokine receptor binding / T follicular helper cell differentiation / positive regulation of tyrosine phosphorylation of STAT protein / positive regulation of immunoglobulin production ...interleukin-2 receptor binding / germinal center B cell differentiation / tyrosine phosphorylation of STAT protein / positive regulation of tissue remodeling / Interleukin-21 signaling / positive regulation of natural killer cell mediated cytotoxicity / cytokine receptor binding / T follicular helper cell differentiation / positive regulation of tyrosine phosphorylation of STAT protein / positive regulation of immunoglobulin production / positive regulation of interleukin-17 production / cell maturation / positive regulation of T cell proliferation / positive regulation of B cell proliferation / cytokine activity / positive regulation of cytokine production / cellular response to virus / positive regulation of type II interferon production / positive regulation of inflammatory response / defense response to virus / positive regulation of cell population proliferation / signal transduction / extracellular space / extracellular region 類似検索 - 分子機能
手法: simulated annealing / ソフトェア番号: 1 詳細: A total of 1235, 2994 and 449 peaks from 15N-separated, 13C-separated NOESY and 2D NOESY spectra, respectively, were included in structure calculations. Together with chemical shifts for the ...詳細: A total of 1235, 2994 and 449 peaks from 15N-separated, 13C-separated NOESY and 2D NOESY spectra, respectively, were included in structure calculations. Together with chemical shifts for the assigned resonances, the NOEs were analyzed with Cyana using the candid protocol for automatic NOE assignment and structure calculation. Additional sources of structural information were included in the calculations. Thus two disulfide bonds were enforced between Cys43 and Cys94, and between Cys50 and Cys97. This disulfide pattern has been established for the hIL-21 molecule through an analysis which combined protease cleavage, Edman degradation, and MS. Test calculations without disulfide bond constraints supported this pattern. Chemical shift values for HA, CA, CB, N and CO atoms were analyzed to predict phi and psi backbone angles using the computer program Talos. Talos gave good predictions for 78 residues, and 156 angle phi/psi angle constraints were included in the calculations with an uncertainty of 30 degrees. From the HNHA spectrum 72 J(HA-HN) scalar coupling constants were extracted and included in the structure calculations. Hydrogen bond constraints were added for 20 backbone amide protons which exchange slowly in deuterium exchange experiments. Hydrogen bond patterns were identified based on structures calculated without hydrogen bond constraints.
代表構造
選択基準: lowest energy
NMRアンサンブル
コンフォーマー選択の基準: structures with the lowest energy 計算したコンフォーマーの数: 64 / 登録したコンフォーマーの数: 20