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データを開く
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基本情報
登録情報 | データベース: SASBDB / ID: SASDBH3 |
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![]() | Leucine-rich repeat transmembrane neuronal protein 2, LRRTM2 (fragment 30-380)
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機能・相同性 | ![]() : / Neurexins and neuroligins / : / ![]() ![]() ![]() ![]() ![]() 類似検索 - 分子機能 |
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![]() | ![]() タイトル: Crystal Structure of an Engineered LRRTM2 Synaptic Adhesion Molecule and a Model for Neurexin Binding. 著者: Anja Paatero / Katja Rosti / Alexander V Shkumatov / Celeste Sele / Cecilia Brunello / Kai Kysenius / Prosanta Singha / Ville Jokinen / Henri Huttunen / Tommi Kajander / ![]() ![]() 要旨: Synaptic adhesion molecules are key components in development of the brain, and in the formation of neuronal circuits, as they are central in the assembly and maturation of chemical synapses. Several ...Synaptic adhesion molecules are key components in development of the brain, and in the formation of neuronal circuits, as they are central in the assembly and maturation of chemical synapses. Several families of neuronal adhesion molecules have been identified such as the neuronal cell adhesion molecules, neurexins and neuroligins, and in particular recently several leucine-rich repeat proteins, e.g., Netrin G-ligands, SLITRKs, and LRRTMs. The LRRTMs form a family of four proteins. They have been implicated in excitatory glutamatergic synapse function and were specifically characterized as ligands for neurexins in excitatory synapse formation and maintenance. In addition, LRRTM3 and LRRTM4 have been found to be ligands for heparan sulfate proteoglycans, including glypican. We report here the crystal structure of a thermostabilized mouse LRRTM2, with a Tm 30 °C higher than that of the wild-type protein. We localized the neurexin binding site to the concave surface based on protein engineering, sequence conservation, and prior information about the interaction of the ligand with neurexins, which allowed us to propose a tentative model for the LRRTM-neurexin interaction complex. We also determined affinities of the thermostabilized LRRTM2 and wild-type LRRTM1 and LRRTM2 for neurexin-β1 with and without Ca(2+). Cell culture studies and binding experiments show that the engineered protein is functional and capable of forming synapselike contacts. The structural and functional data presented here provide the first structure of an LRRTM protein and allow us to propose a model for the molecular mechanism of LRRTM function in the synaptic adhesion. |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
-モデル
モデル #446 | ![]() タイプ: dummy / ダミー原子の半径: 4.75 A / カイ2乗値: 1.387 / P-value: 0.099700 ![]() |
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試料
![]() | 名称: Leucine-rich repeat transmembrane neuronal protein 2, LRRTM2 (fragment 30-380) 試料濃度: 1.30-3.40 |
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バッファ | 名称: 20 mM Tris 150 mM NaCl 3% glycerol / 濃度: 20.00 mM / pH: 7.4 / 組成: 150 mM NaCl, 3% glycerol |
要素 #297 | 名称: LRRTM2 30-380 / タイプ: protein 記述: Mouse Leucine-rich repeat transmembrane neuronal protein 2, LRRTM2 分子量: 40.122 / 分子数: 2 / 由来: Mus musculus / 参照: UniProt: Q8BGA3 配列: LGMACPPKCR CEKLLFYCDS QGFHSVPNAT DKGSLGLSLR HNHITALERD QFASFSQLTW LHLDHNQIST VKEDAFQGLY KLKELILSSN KIFYLPNTTF TQLINLQNLD LSFNQLSSLH PELFYGLRKL QTLHLRSNSL RTIPVRLFWD CRSLEFLDLS TNRLRSLARN ...配列: LGMACPPKCR CEKLLFYCDS QGFHSVPNAT DKGSLGLSLR HNHITALERD QFASFSQLTW LHLDHNQIST VKEDAFQGLY KLKELILSSN KIFYLPNTTF TQLINLQNLD LSFNQLSSLH PELFYGLRKL QTLHLRSNSL RTIPVRLFWD CRSLEFLDLS TNRLRSLARN GFAGLIKLRE LHLEHNQLTK INFAHFLRLS SLHTLFLQWN KISNLTCGMD WTWSTLEKLD LTGNEIKAID LTVFETMPNL KILLMDNNKL NSLDSKILNS LKSLTTVGLS GNLWECSPRV CALASWLGSF QGRWEHSILC HSPDHTQGED ILDAVHGFQL CWNLSTTVTA MATTYRDPTT E |
-実験情報
ビーム | 設備名称: ESRF ID14-3 / 地域: Grenoble / 国: France ![]() ![]() | |||||||||||||||
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検出器 | 名称: Pilatus 1M | |||||||||||||||
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距離分布関数 P(R) |
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