+データを開く
-基本情報
登録情報 | データベース: SASBDB / ID: SASDBU9 |
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試料 | Terminally truncated human βB2-crystallin
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機能・相同性 | 機能・相同性情報 structural constituent of eye lens / response to stimulus / lens development in camera-type eye / 視覚 / structural molecule activity / identical protein binding 類似検索 - 分子機能 |
生物種 | Homo sapiens (ヒト) |
引用 | ジャーナル: Structure / 年: 2017 タイトル: Human βB2-Crystallin Forms a Face-en-Face Dimer in Solution: An Integrated NMR and SAXS Study. 著者: Zhaoyong Xi / Matthew J Whitley / Angela M Gronenborn / 要旨: βγ-Crystallins are long-lived eye lens proteins that are crucial for lens transparency and refractive power. Each βγ-crystallin comprises two homologous domains, which are connected by a short ...βγ-Crystallins are long-lived eye lens proteins that are crucial for lens transparency and refractive power. Each βγ-crystallin comprises two homologous domains, which are connected by a short linker. γ-Crystallins are monomeric, while β-crystallins crystallize as dimers and multimers. In the crystal, human βB2-crystallin is a domain-swapped dimer while the N-terminally truncated βB1-crystallin forms a face-en-face dimer. Combining and integrating data from multi-angle light scattering, nuclear magnetic resonance, and small-angle X-ray scattering of full-length and terminally truncated human βB2-crystallin in solution, we show that both these βB2-crystallin proteins are dimeric, possess C2 symmetry, and are more compact than domain-swapped dimers. Importantly, no inter-molecular paramagnetic relaxation enhancement effects compatible with domain swapping were detected. Our collective experimental results unambiguously demonstrate that, in solution, human βB2-crystallin is not domain swapped and exhibits a face-en-face dimer structure similar to the crystal structure of truncated βB1-crystallin. |
登録者 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-モデル
モデル #1128 | タイプ: dummy / ソフトウェア: DAMMIN / ダミー原子の半径: 2.00 A / カイ2乗値: 0.216 / P-value: 0.038400 Omokage検索でこの集合体の類似形状データを探す (詳細) |
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-試料
試料 | 名称: Terminally truncated human βB2-crystallin / 試料濃度: 1.75 mg/ml |
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バッファ | 名称: 25 mM NaPi, 5 mM DTT, 1 mM EDTA, / pH: 6.5 |
要素 #587 | タイプ: protein / 記述: Beta-crystallin B2 / 分子量: 20.911 / 分子数: 2 / 由来: Homo sapiens / 参照: UniProt: P43320 配列: MLNPKIIIFE QENFQGHSHE LNGPCPNLKE TGVEKAGSVL VQAGPWVGYE QANCKGEQFV FEKGEYPRWD SWTSSRRTDS LSSLRPIKVD SQEHKIILYE NPNFTGKKME IIDDDVPSFH AHGYQEKVSS VRVQSGTWVG YQYPGYRGLQ YLLEKGDYKD SSDFGAPHPQ VQSVRRIRDM QW |
-実験情報
ビーム | 設備名称: Advanced Photon Source (APS) 12ID-B SAXS/WAXS / 地域: Argonne, IL / 国: USA / 線源: X-ray synchrotronシンクロトロン / 波長: 0.08856 Å / スペクトロメータ・検出器間距離: 2 mm | |||||||||||||||||||||||||||||||||
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検出器 | 名称: Pilatus 2M | |||||||||||||||||||||||||||||||||
スキャン | タイトル: terminally truncated human βB2-crystallin / 測定日: 2015年3月20日 / 照射時間: 0.4 sec. / フレーム数: 30 / 単位: 1/A /
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距離分布関数 P(R) | ソフトウェア P(R): GNOM 5.0 / ポイント数: 167 /
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結果 | カーブのタイプ: single_conc /
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