3BJI

Structural Basis of Promiscuous Guanine Nucleotide Exchange by the T-Cell Essential Vav1

3BJI の概要

• エントリーDOI: 10.2210/pdb3bji/pdb
• 関連するPDBエントリー: 1F5X 1FOE
• 分子名称: Proto-oncogene vav, Ras-related C3 botulinum toxin substrate 1 precursor, ZINC ION, ... (4 entities in total)
• 機能のキーワード: protein-protein interaction, gef/gtpase, atypical cysteine rich domain, guanine-nucleotide releasing factor, metal-binding, phorbol-ester binding, phosphoprotein, proto-oncogene, sh2 domain, sh3 domain, zinc, zinc-finger, adp-ribosylation, alternative splicing, gtp-binding, lipoprotein, membrane, methylation, nucleotide-binding, polymorphism, prenylation, signaling protein, structural genomics, psi-2, protein structure initiative, accelerated technologies center for gene to 3d structure, atcg3d
• 由来する生物種: Homo sapiens (Human); 詳細
• 細胞内の位置: Cell membrane; Lipid-anchor; Cytoplasmic side (By similarity): P63000
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 128661.33

構造登録者

Chrencik, J.E.,Brooun, A.,Kuhn, P.,Accelerated Technologies Center for Gene to 3D Structure (ATCG3D) (登録日: 2007-12-04, 公開日: 2008-07-15, 最終更新日: 2024-03-13)

主引用文献

Chrencik, J.E.,Brooun, A.,Zhang, H.,Mathews, I.I.,Hura, G.L.,Foster, S.A.,Perry, J.J.,Streiff, M.,Ramage, P.,Widmer, H.,Bokoch, G.M.,Tainer, J.A.,Weckbecker, G.,Kuhn, P.
Structural basis of guanine nucleotide exchange mediated by the T-cell essential Vav1.
J.Mol.Biol., 380:828-843, 2008

PubMed Abstract: The guanine nucleotide exchange factor (GEF) Vav1 plays an important role in T-cell activation and tumorigenesis. In the GEF superfamily, Vav1 has the ability to interact with multiple families of Rho GTPases. The structure of the Vav1 DH-PH-CRD/Rac1 complex to 2.6 A resolution reveals a unique intramolecular network of contacts between the Vav1 cysteine-rich domain (CRD) and the C-terminal helix of the Vav1 Dbl homology (DH) domain. These unique interactions stabilize the Vav1 DH domain for its intimate association with the Switch II region of Rac1 that is critical for the displacement of the guanine nucleotide. Small angle x-ray scattering (SAXS) studies support this domain arrangement for the complex in solution. Further, mutational analyses confirms that the atypical CRD is critical for maintaining both optimal guanine nucleotide exchange activity and broader specificity of Vav family GEFs. Taken together, the data outline the detailed nature of Vav1's ability to contact a range of Rho GTPases using a novel protein-protein interaction network.

PubMed: 18589439
DOI: 10.1016/j.jmb.2008.05.024

実験手法

X-RAY DIFFRACTION (2.6 Å)