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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: SASDAP7 |
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![]() | PBX1-PREB1 complex
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機能・相同性 | ![]() urogenital system development / natural killer cell differentiation / proximal/distal pattern formation / embryonic skeletal system development / sex differentiation / Transcriptional regulation of pluripotent stem cells / eye development / steroid biosynthetic process / camera-type eye development / embryonic limb morphogenesis ...urogenital system development / natural killer cell differentiation / proximal/distal pattern formation / embryonic skeletal system development / sex differentiation / Transcriptional regulation of pluripotent stem cells / eye development / steroid biosynthetic process / camera-type eye development / embryonic limb morphogenesis / anterior/posterior pattern specification / embryonic hemopoiesis / NOTCH3 Intracellular Domain Regulates Transcription / adrenal gland development / branching involved in ureteric bud morphogenesis / positive regulation of stem cell proliferation / T cell differentiation / regulation of ossification / negative regulation of neuron differentiation / embryonic organ development / neuron development / spleen development / positive regulation of G2/M transition of mitotic cell cycle / erythrocyte differentiation / thymus development / transcription coregulator binding / animal organ morphogenesis / transcription corepressor binding / stem cell proliferation / negative regulation of DNA-binding transcription factor activity / brain development / Activation of anterior HOX genes in hindbrain development during early embryogenesis / RNA polymerase II transcription regulator complex / G2/M transition of mitotic cell cycle / sequence-specific double-stranded DNA binding / DNA-binding transcription activator activity, RNA polymerase II-specific / angiogenesis / DNA-binding transcription factor binding / transcription regulator complex / transcription by RNA polymerase II / DNA-binding transcription factor activity, RNA polymerase II-specific / transcription cis-regulatory region binding / RNA polymerase II cis-regulatory region sequence-specific DNA binding / DNA-binding transcription factor activity / chromatin binding / chromatin / positive regulation of transcription by RNA polymerase II / DNA binding / nucleoplasm / nucleus / cytoplasm 類似検索 - 分子機能 |
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![]() | ![]() タイトル: The flexibility of a homeodomain transcription factor heterodimer and its allosteric regulation by DNA binding. 著者: Lisa Mathiasen / Erica Valentini / Stephane Boivin / Angela Cattaneo / Francesco Blasi / Dmitri I Svergun / Chiara Bruckmann / ![]() ![]() 要旨: Transcription factors are known to modify the DNA that they bind. However, DNA can also serve as an allosteric ligand whose binding modifies the conformation of transcriptional regulators. Here, we ...Transcription factors are known to modify the DNA that they bind. However, DNA can also serve as an allosteric ligand whose binding modifies the conformation of transcriptional regulators. Here, we describe how heterodimer PBX1:PREP1, formed by proteins playing major roles in embryonic development and tumorigenesis, undergoes an allosteric transition upon DNA binding. We demonstrate through a number of biochemical and biophysical methods that PBX1:PREP1 exhibits a structural change upon DNA binding. Small-angle X-ray scattering (SAXS), circular dichroism (CD), isothermal titration calorimetry (ITC), and limited proteolysis demonstrate a different shape, α-helical content, thermodynamic behavior, and solution environment of the holo-complex (with DNA) compared to the apo-complex (without DNA). Given that PBX1 as such does not have a defined DNA selectivity, structural changes upon DNA binding become major factors in the function of the PBX1:PREP1 complex. The observed changes are mapped at both the amino- and carboxy-terminal regions of the two proteins thereby providing important insights to determine how PBX1:PREP1 dimer functions. データベース: Small-angle scattering data are available in SASBDB under accession numbers SASDAP7, SASDAQ7, and SASDAR7. |
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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 #288 | ![]() タイプ: dummy / ソフトウェア: DAMMIF / ダミー原子の半径: 4.00 A / カイ2乗値: 1.340964 ![]() |
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試料
![]() | 名称: PBX1-PREB1 complex / 試料濃度: 1.50-2.80 / Entity id: 160 / 161 |
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バッファ | 名称: Tris-HCl / 濃度: 20.00 mM / pH: 7.4 / 組成: 150 mM NaCl, 5% glycerol, 1 mM DTT |
要素 #160 | 名称: PBX1 / タイプ: protein / 記述: Pre-B-cell leukemia transcription factor 1 / 分子量: 34.455 / 分子数: 1 / 由来: Homo sapiens / 参照: UniProt: P40424 配列: MDEQPRLMHS HAGVGMAGHP GLSQHLQDGA GGTEGEGGRK QDIGDILQQI MTITDQSLDE AQARKHALNC HRMKPALFNV LCEIKEKTVL SIRGAQEEEP TDPQLMRLDN MLLAEGVAGP EKGGGSAAAA AAAAASGGAG SDNSVEHSDY RAKLSQIRQI YHTELEKYEQ ...配列: MDEQPRLMHS HAGVGMAGHP GLSQHLQDGA GGTEGEGGRK QDIGDILQQI MTITDQSLDE AQARKHALNC HRMKPALFNV LCEIKEKTVL SIRGAQEEEP TDPQLMRLDN MLLAEGVAGP EKGGGSAAAA AAAAASGGAG SDNSVEHSDY RAKLSQIRQI YHTELEKYEQ ACNEFTTHVM NLLREQSRTR PISPKEIERM VSIIHRKFSS IQMQLKQSTC EAVMILRSRF LDARRKRRNF NKQATEILNE YFYSHLSNPY PSEEAKEELA KKCGITVSQV SNWFGNKRIR YKKNIGKFQE EANIYAAK |
要素 #161 | 名称: PREP1 / タイプ: protein / 記述: Homeobox protein PKNOX1 / 分子量: 38.339 / 分子数: 1 / 由来: Homo sapiens / 参照: UniProt: P55347 配列: MMATQTLSID SYQDGQQMQV VTELKTEQDP NCSEPDAEGV SPPPVESQTP MDVDKQAIYR HPLFPLLALL FEKCEQSTQG SEGTTSASFD VDIENFVRKQ EKEGKPFFCE DPETDNLMVK AIQVLRIHLL ELEKVNELCK DFCSRYIACL KTEMNSETLL SGEPGSPYSP ...配列: MMATQTLSID SYQDGQQMQV VTELKTEQDP NCSEPDAEGV SPPPVESQTP MDVDKQAIYR HPLFPLLALL FEKCEQSTQG SEGTTSASFD VDIENFVRKQ EKEGKPFFCE DPETDNLMVK AIQVLRIHLL ELEKVNELCK DFCSRYIACL KTEMNSETLL SGEPGSPYSP VQSQQIQSAI TGTISPQGIV VPASALQQGN VAMATVAGGT VYQPVTVVTP QGQVVTQTLS PGTIRIQNSQ LQLQLNQDLS ILHQDDGSSK NKRGVLPKHA TNVMRSWLFQ HIGHPYPTED EKKQIAAQTN LTLLQVNNWF INARRRILQP MLDSSCSETP KTKKKTAQNR PVQRF |
-実験情報
ビーム | 設備名称: PETRA III P12 / 地域: Hamburg / 国: Germany ![]() | ||||||||||||||||||||||||||||||
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検出器 | 名称: Pilatus 2M | ||||||||||||||||||||||||||||||
スキャン | 測定日: 2013年12月6日 / 照射時間: 0.05 sec. / フレーム数: 50 / 単位: 1/nm /
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結果 |
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