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基本情報
登録情報 | データベース: PDB / ID: 1r70 | ||||||
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タイトル | Model of human IgA2 determined by solution scattering, curve fitting and homology modelling | ||||||
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![]() | IMMUNE SYSTEM / Immunology / antibody / IgA / glycoprotein / Ig fold | ||||||
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手法 | ![]() ![]() | ||||||
![]() | Furtado, P.B. / Whitty, P.W. / Robertson, A. / Eaton, J.T. / Almogren, A. / Kerr, M.A. / Woof, J.M. / Perkins, S.J. | ||||||
![]() | ![]() タイトル: Solution Structure Determination of Monomeric Human IgA2 by X-ray and Neutron Scattering, Analytical Ultracentrifugation and Constrained Modelling: A Comparison with Monomeric Human IgA1. 著者: Furtado, P.B. / Whitty, P.W. / Robertson, A. / Eaton, J.T. / Almogren, A. / Kerr, M.A. / Woof, J.M. / Perkins, S.J. | ||||||
履歴 |
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Remark 999 | SEQUENCE At the time of processing, there were no suitable sequence database references for the ...SEQUENCE At the time of processing, there were no suitable sequence database references for the proteins in this entry. |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: 抗体 | 分子量: 23216.770 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 株 (発現宿主): K1 #2: 抗体 | 分子量: 49922.031 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 株 (発現宿主): K1 |
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-実験情報
-実験
実験 | 手法: ![]() |
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-データ収集
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放射波長 | 相対比: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Soln scatter | Data analysis software list: SCTPL7, GNOM / Sample pH: 7.4 / 温度: 288 K
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解析
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精密化 | 構造決定の手法: CONSTRAINED MODEL FIT / 解像度: 30→1300 Å / Rfactor all: 0.066 / 立体化学のターゲット値: ENGH & HUBER | |||||||||||||||||||||||||||||||||||||||||||||
精密化ステップ | サイクル: LAST / 解像度: 30→1300 Å
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Soln scatter model | 手法: CONSTRAINED SCATTERING FITTING OF HOMOLOGY MODELS コンフォーマー選択の基準: THE MODELLED SCATTERING CURVES WERE ASSESSED BY CALCULATION OF THE RG, RSX-1 AND VALUES IN THE SAME Q RANGES USED IN THE EXPERIMENTAL GUINIER FITS. MODELS WERE ...コンフォーマー選択の基準: THE MODELLED SCATTERING CURVES WERE ASSESSED BY CALCULATION OF THE RG, RSX-1 AND VALUES IN THE SAME Q RANGES USED IN THE EXPERIMENTAL GUINIER FITS. MODELS WERE THEN RANKED USING A GOODNESS-OF-FIT R-FACTOR DEFINED BY ANALOGY WITH PROTEIN CRYSTALLOGRAPHY AND BASED ON THE EXPERIMENTAL CURVES IN THE Q RANGE EXTENDING TO 2.2 NM-1 (ESRF X-RAYS) AND 2.2 NM-1 (ISIS NEUTRONS). 詳細: HOMOLOGY MODELS WERE BUILT FOR THE IGA2 FAB AND FC FRAGMENTS STARTING FROM THE IGA1 MODEL (PDB ENTRY 1IGA). THE POSITIONS OF THE FAB FRAGMENTS RELATIVE TO THE FC FRAGMENT WERE DETERMINED BY ...詳細: HOMOLOGY MODELS WERE BUILT FOR THE IGA2 FAB AND FC FRAGMENTS STARTING FROM THE IGA1 MODEL (PDB ENTRY 1IGA). THE POSITIONS OF THE FAB FRAGMENTS RELATIVE TO THE FC FRAGMENT WERE DETERMINED BY AN APPROACH THAT COMBINED RANDOM HINGE PEPTIDE STRUCTURES PRODUCED BY MOLECULAR DYNAMICS SIMULATIONS WITH CURVE-FITTING TO EXPERIMENTAL SOLUTION SCATTERING DATA. THE X-RAY AND NEUTRON SCATTERING CURVE I(Q) WAS CALCULATED ASSUMING A UNIFORM SCATTERING DENSITY FOR THE SPHERES USING THE DEBYE EQUATION AS ADAPTED TO SPHERES. X-RAY CURVES WERE CALCULATED FROM THE HYDRATED SPHERE MODELS WITHOUT CORRECTIONS FOR WAVELENGTH SPREAD OR BEAM DIVERGENCE, WHILE THESE CORRECTIONS WERE APPLIED FOR THE NEUTRON CURVES BUT NOW USING UNHYDRATED MODELS. A SINGLE ARRANGEMENT OF THE FAB FRAGMENTS IS PRESENTED, WHICH IS REPRESENTATIVE OF A FAMILY OF STRUCTURES THAT FIT THE SCATTERING DATA. MORE DETAILS ON THE MODELLING STRATEGY ARE CONTAINED IN THE PRIMARY REFERENCE. Num. of conformers calculated: 10000 / Num. of conformers submitted: 1 / 代表コンフォーマー: 1 / Software author list: ACCELRYS Software list: INSIGHT II, HOMOLOGY, DISCOVERY, BIOPOLYMER, DELPHI, O, SCTPL7, GNOM |