+データを開く
-基本情報
登録情報 | データベース: SASBDB / ID: SASDB33 |
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試料 | Glutamate decarboxylase alpha (GadA) from E. coli
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機能・相同性 | 機能・相同性情報 glutamate decarboxylase / glutamate decarboxylase activity / glutamate catabolic process / intracellular pH elevation / pyridoxal phosphate binding / membrane / cytosol 類似検索 - 分子機能 |
生物種 | Escherichia coli (大腸菌) |
引用 | ジャーナル: PLoS One / 年: 2016 タイトル: X-Ray Solution Scattering Study of Four Escherichia coli Enzymes Involved in Stationary-Phase Metabolism. 著者: Liubov A Dadinova / Eleonora V Shtykova / Petr V Konarev / Elena V Rodina / Natalia E Snalina / Natalia N Vorobyeva / Svetlana A Kurilova / Tatyana I Nazarova / Cy M Jeffries / Dmitri I Svergun / 要旨: The structural analyses of four metabolic enzymes that maintain and regulate the stationary growth phase of Escherichia coli have been performed primarily drawing on the results obtained from ...The structural analyses of four metabolic enzymes that maintain and regulate the stationary growth phase of Escherichia coli have been performed primarily drawing on the results obtained from solution small angle X-ray scattering (SAXS) and other structural techniques. The proteins are (i) class I fructose-1,6-bisphosphate aldolase (FbaB); (ii) inorganic pyrophosphatase (PPase); (iii) 5-keto-4-deoxyuronate isomerase (KduI); and (iv) glutamate decarboxylase (GadA). The enzyme FbaB, that until now had an unknown structure, is predicted to fold into a TIM-barrel motif that form globular protomers which SAXS experiments show associate into decameric assemblies. In agreement with previously reported crystal structures, PPase forms hexamers in solution that are similar to the previously reported X-ray crystal structure. Both KduI and GadA that are responsible for carbohydrate (pectin) metabolism and acid stress responses, respectively, form polydisperse mixtures consisting of different oligomeric states. Overall the SAXS experiments yield additional insights into shape and organization of these metabolic enzymes and further demonstrate the utility of hybrid methods, i.e., solution SAXS combined with X-ray crystallography, bioinformatics and predictive 3D-structural modeling, as tools to enrich structural studies. The results highlight the structural complexity that the protein components of metabolic networks may adopt which cannot be fully captured using individual structural biology techniques. |
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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 #527 | タイプ: mix / ダミー原子の半径: 1.90 A / 対称性: P32 / カイ2乗値: 1.37 / P-value: 0.000032 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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モデル #528 | タイプ: mix / ダミー原子の半径: 1.90 A / カイ2乗値: 1.37 / P-value: 0.000032 Omokage検索でこの集合体の類似形状データを探す (詳細) |
モデル #529 | タイプ: mix / ダミー原子の半径: 1.90 A / カイ2乗値: 1.37 / P-value: 0.000032 Omokage検索でこの集合体の類似形状データを探す (詳細) |
モデル #530 | タイプ: mix / ダミー原子の半径: 1.90 A / カイ2乗値: 1.37 / P-value: 0.000032 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: Glutamate decarboxylase alpha (GadA) from E. coli / 試料濃度: 1.40-10.80 |
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バッファ | 名称: 50 mM Tris 10 mM NaCl / 濃度: 50.00 mM / pH: 7.5 / 組成: 10 mM NaCl |
要素 #283 | 名称: GadA / タイプ: protein / 記述: Glutamate decarboxylase alpha (GadA) from E. coli / 分子量: 52.685 / 分子数: 1 / 由来: Escherichia coli / 参照: UniProt: P69908 配列: MDQKLLTDFR SELLDSRFGA KAISTIAESK RFPLHEMRDD VAFQIINDEL YLDGNARQNL ATFCQTWDDE NVHKLMDLSI NKNWIDKEEY PQSAAIDLRC VNMVADLWHA PAPKNGQAVG TNTIGSSEAC MLGGMAMKWR WRKRMEAAGK PTDKPNLVCG PVQICWHKFA ...配列: MDQKLLTDFR SELLDSRFGA KAISTIAESK RFPLHEMRDD VAFQIINDEL YLDGNARQNL ATFCQTWDDE NVHKLMDLSI NKNWIDKEEY PQSAAIDLRC VNMVADLWHA PAPKNGQAVG TNTIGSSEAC MLGGMAMKWR WRKRMEAAGK PTDKPNLVCG PVQICWHKFA RYWDVELREI PMRPGQLFMD PKRMIEACDE NTIGVVPTFG VTYTGNYEFP QPLHDALDKF QADTGIDIDM HIDAASGGFL APFVAPDIVW DFRLPRVKSI SASGHKFGLA PLGCGWVIWR DEEALPQELV FNVDYLGGQI GTFAINFSRP AGQVIAQYYE FLRLGREGYT KVQNASYQVA AYLADEIAKL GPYEFICTGR PDEGIPAVCF KLKDGEDPGY TLYDLSERLR LRGWQVPAFT LGGEATDIVV MRIMCRRGFE MDFAELLLED YKASLKYLSD HPKLQGIAQQ NSFKHT |
-実験情報
ビーム | 設備名称: PETRA III EMBL P12 / 地域: Hamburg / 国: Germany / 線源: X-ray synchrotron / 波長: 0.12 Å / スペクトロメータ・検出器間距離: 3.1 mm | |||||||||||||||||||||||||||
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検出器 | 名称: Pilatus 2M | |||||||||||||||||||||||||||
スキャン | タイトル: Glutamate decarboxylase alpha (GadA) from E. coli 測定日: 2013年6月20日 / 保管温度: 10 °C / セル温度: 10 °C / 照射時間: 0.05 sec. / フレーム数: 20 / 単位: 1/nm /
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結果 | カーブのタイプ: single_conc コメント: Under the experimental conditions described above, GadA exists as a mixture in solution of likely hexamers (volume fraction approximately 60%) and disassociated dimers (40%). The models ...コメント: Under the experimental conditions described above, GadA exists as a mixture in solution of likely hexamers (volume fraction approximately 60%) and disassociated dimers (40%). The models displayed for this entry and associated fit are derived from SASREFMX modelling in P32 symmetry. The final fit to the SAXS data of the mixture was determined using OLIGOMER. The specific volume fraction estimates of the hexamer and three dimers are included in the full entry zip archive.
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