+データを開く
-基本情報
登録情報 | データベース: SASBDB / ID: SASDCT5 |
---|---|
試料 | SAXS on intact Doryteuthis squid lens 40% layer
|
機能・相同性 | 機能・相同性情報 |
生物種 | Doryteuthis pealeii (無脊椎動物) |
引用 | ジャーナル: Science / 年: 2017 タイトル: Eye patches: Protein assembly of index-gradient squid lenses. 著者: J Cai / J P Townsend / T C Dodson / P A Heiney / A M Sweeney / 要旨: A parabolic relationship between lens radius and refractive index allows spherical lenses to avoid spherical aberration. We show that in squid, patchy colloidal physics resulted from an evolutionary ...A parabolic relationship between lens radius and refractive index allows spherical lenses to avoid spherical aberration. We show that in squid, patchy colloidal physics resulted from an evolutionary radiation of globular S-crystallin proteins. Small-angle x-ray scattering experiments on lens tissue show colloidal gels of S-crystallins at all radial positions. Sparse lens materials form via low-valence linkages between disordered loops protruding from the protein surface. The loops are polydisperse and bind via a set of hydrogen bonds between disordered side chains. Peripheral lens regions with low particle valence form stable, volume-spanning gels at low density, whereas central regions with higher average valence gel at higher densities. The proteins demonstrate an evolved set of linkers for self-assembly of nanoparticles into volumetric materials. |
登録者 |
|
-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
---|
-ダウンロードとリンク
-モデル
モデル #1364 | タイプ: dummy / ソフトウェア: (1.1.2) / ダミー原子の半径: 4.20 A / 対称性: None / コメント: An invert method has been applied. / カイ2乗値: 2.765569 Omokage検索でこの集合体の類似形状データを探す (詳細) |
---|
-試料
試料 | 名称: SAXS on intact Doryteuthis squid lens 40% layer |
---|---|
バッファ | 名称: Tissue fluid / pH: 7 |
要素 #672 | 名称: S-crystallin, Q25367 / タイプ: protein / 記述: S-crystallin, Q25367_DOROP / 分子量: 27.289 / 分子数: 2 / 由来: Doryteuthis pealeii / 参照: UniProt: Q25367_DOR 配列: MPTYTLYYFN GRGRAEVLRM MFAAANVKYM DKRFEFNEWD KYRKDMPSMC VPVLEMDGGN KMPETMAIPR YLAREFGFYG KSNMDMMRCD YIADCFYEIM HDYMRYFHEK NGRFRSSMEG SGNGMNSPTG ASGDMNSNSN FDTYLQWRFM NTCNRVLPFL ERTLEMQNGG ...配列: MPTYTLYYFN GRGRAEVLRM MFAAANVKYM DKRFEFNEWD KYRKDMPSMC VPVLEMDGGN KMPETMAIPR YLAREFGFYG KSNMDMMRCD YIADCFYEIM HDYMRYFHEK NGRFRSSMEG SGNGMNSPTG ASGDMNSNSN FDTYLQWRFM NTCNRVLPFL ERTLEMQNGG KAFFMGDQMM WCDMMCHCAL EGPFMENQSM LSKHPKLMAL RTRIASHPKI SGYLKSRSNT NW |
-実験情報
ビーム | 設備名称: National Synchrotron Light Source (NSLS) X9A / 地域: Brookhaven, NY / 国: USA / 線源: X-ray synchrotron / 波長: 0.1 Å | ||||||
---|---|---|---|---|---|---|---|
検出器 | 名称: Pilatus 300K / タイプ: 20Hz | ||||||
スキャン | タイトル: SAXS on intact Doryteuthis squid lens 40% layer 測定日: 2014年7月17日 / 保管温度: 10 °C / セル温度: 10 °C / 照射時間: 300 sec. / フレーム数: 1 / 単位: 1/A /
| ||||||
結果 | Experimental MW: 50 kDa / I0 from PR: 180 / Rg from PR: 2.4 nm / カーブのタイプ: single_conc コメント: The space-filling model ultimately represents the spatial density fluctuation of the material, not the presence of material. Since we measured a nearly water-free density of material ...コメント: The space-filling model ultimately represents the spatial density fluctuation of the material, not the presence of material. Since we measured a nearly water-free density of material at the core of the lens, we show the void density of the model prediction here. |