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基本情報
登録情報 | データベース: PDB / ID: 1lj7 | ||||||
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タイトル | Crystal structure of calcium-depleted human C-reactive protein from perfectly twinned data | ||||||
![]() | C-reactive protein | ||||||
![]() | UNKNOWN FUNCTION / pentraxin fold / pentamer / decamer / twinned | ||||||
機能・相同性 | ![]() regulation of interleukin-8 production / opsonization / complement component C1q complex binding / low-density lipoprotein particle binding / vasoconstriction / choline binding / negative regulation of mononuclear cell proliferation / Classical antibody-mediated complement activation / low-density lipoprotein particle receptor binding / negative regulation of macrophage derived foam cell differentiation ...regulation of interleukin-8 production / opsonization / complement component C1q complex binding / low-density lipoprotein particle binding / vasoconstriction / choline binding / negative regulation of mononuclear cell proliferation / Classical antibody-mediated complement activation / low-density lipoprotein particle receptor binding / negative regulation of macrophage derived foam cell differentiation / negative regulation of lipid storage / positive regulation of superoxide anion generation / acute-phase response / defense response to Gram-positive bacterium / inflammatory response / innate immune response / calcium ion binding / positive regulation of gene expression / extracellular space / extracellular region / identical protein binding 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
手法 | ![]() ![]() ![]() | ||||||
![]() | Ramadan, M.A. / Shrive, A.K. / Holden, D. / Myles, D.A. / Volanakis, J.E. / DeLucas, L.J. / Greenhough, T.J. | ||||||
![]() | ![]() タイトル: The three-dimensional structure of calcium-depleted human C-reactive protein from perfectly twinned crystals. 著者: Ramadan, M.A. / Shrive, A.K. / Holden, D. / Myles, D.A. / Volanakis, J.E. / DeLucas, L.J. / Greenhough, T.J. | ||||||
履歴 |
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Remark 11 | A few small regions of the structure are not well defined due to the twinning and asociated ... A few small regions of the structure are not well defined due to the twinning and asociated disorder. The twinning 2-fold is parallel to the 2-fold ncs operator relating the two pentamers in the assymetric unit. Removal of calcium results in residues in the calcium- binding loop 140-150 becoming disordered and mobile. The loops and parts of loops that are visible are held in place by crystal contacts | ||||||
Remark 300 | Biomolecule: 1,2 This entry contains the crystallographic assymetric unit which consists of 10 ... Biomolecule: 1,2 This entry contains the crystallographic assymetric unit which consists of 10 chain(s). See remark 350 for information on generating the biological molecule(s). It is, however, not clear whether the biomolecule consists of one or two pentameters |
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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 | ![]() | 386.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 322.1 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 489.9 KB | 表示 | ![]() |
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CIF形式データ | ![]() | 93.4 KB | 表示 | |
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-関連構造データ
関連構造データ | ![]() 1gnhS 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: 23068.039 Da / 分子数: 10 / 由来タイプ: 天然 / 詳細: purified from serum / 由来: (天然) ![]() Has protein modification | Y | |
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-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: 3.6 Å3/Da / 溶媒含有率: 66 % 解説: Data in this section (200) refers to the twinned space group P4(1)22 |
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結晶化 | 手法: 蒸気拡散法, ハンギングドロップ法 / 詳細: VAPOR DIFFUSION, HANGING DROP |
結晶化 | *PLUS 詳細: DeLucas, L.J., (1987) J. Mol. Biol., 196, 741. |
-データ収集
回折 | 平均測定温度: 298 K |
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放射光源 | 由来: ![]() ![]() ![]() |
検出器 | タイプ: CEA / 検出器: FILM / 日付: 1989年1月1日 |
放射 | モノクロメーター: Germanium / 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: 1.488 Å / 相対比: 1 |
反射 | 解像度: 3.15→72.6 Å / Num. obs: 26903 / % possible obs: 92.1 % / Observed criterion σ(I): 0 / 冗長度: 5.3 % / Rmerge(I) obs: 0.114 / Net I/σ(I): 5.4 |
反射 シェル | 解像度: 3.15→3.25 Å / 冗長度: 1.3 % / Rmerge(I) obs: 0.276 / Mean I/σ(I) obs: 2.4 / % possible all: 55.8 |
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解析
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精密化 | 構造決定の手法: ![]() 開始モデル: Amended pentamer from PDB ENTRY 1GNH 解像度: 3.15→20 Å / Data cutoff low absF: 0 / 交差検証法: THROUGHOUT / σ(F): 0 / 立体化学のターゲット値: Engh & Huber 詳細: Non-standard refinement, including deconvolution, carried out in P43 (See Ramadan et al). The completeness in P43 is significantly less than in P422 (See experimental details) due to the ...詳細: Non-standard refinement, including deconvolution, carried out in P43 (See Ramadan et al). The completeness in P43 is significantly less than in P422 (See experimental details) due to the deconvolution procedure. Data was merged in P4 (1)22. In experimental details, refer to this space group rather than P43. Refinement carried out in P43
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原子変位パラメータ | Biso mean: 20.8 Å2 | ||||||||||||||||||||||||
精密化ステップ | サイクル: LAST / 解像度: 3.15→20 Å
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LS精密化 シェル | 解像度: 3.15→3.29 Å / Total num. of bins used: 8 /
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精密化 | *PLUS 最低解像度: 20 Å / Rfactor obs: 0.186 | ||||||||||||||||||||||||
溶媒の処理 | *PLUS | ||||||||||||||||||||||||
原子変位パラメータ | *PLUS | ||||||||||||||||||||||||
LS精密化 シェル | *PLUS Rfactor obs: 0.231 |