BIM-BCL-xl complex / BIM-BCL-2 complex / regulation of developmental pigmentation / RUNX3 regulates BCL2L11 (BIM) transcription / positive regulation of mitochondrial membrane permeability involved in apoptotic process / positive regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway / Activation of BIM and translocation to mitochondria / developmental pigmentation / positive regulation of fibroblast apoptotic process / apoptotic process involved in embryonic digit morphogenesis ...BIM-BCL-xl complex / BIM-BCL-2 complex / regulation of developmental pigmentation / RUNX3 regulates BCL2L11 (BIM) transcription / positive regulation of mitochondrial membrane permeability involved in apoptotic process / positive regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway / Activation of BIM and translocation to mitochondria / developmental pigmentation / positive regulation of fibroblast apoptotic process / apoptotic process involved in embryonic digit morphogenesis / ear development / symbiont-mediated suppression of host apoptosis / BH3-only proteins associate with and inactivate anti-apoptotic BCL-2 members / meiosis I / mammary gland development / positive regulation of T cell apoptotic process / regulation of organ growth / tube formation / cellular response to glucocorticoid stimulus / Bcl-2 family protein complex / myeloid cell homeostasis / NRAGE signals death through JNK / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / thymocyte apoptotic process / FOXO-mediated transcription of cell death genes / positive regulation of IRE1-mediated unfolded protein response / positive regulation of release of cytochrome c from mitochondria / T cell homeostasis / odontogenesis of dentin-containing tooth / B cell homeostasis / host cell membrane / host cell mitochondrion / extrinsic apoptotic signaling pathway in absence of ligand / positive regulation of intrinsic apoptotic signaling pathway / spleen development / positive regulation of cell cycle / FLT3 Signaling / endomembrane system / response to endoplasmic reticulum stress / thymus development / cell-matrix adhesion / kidney development / post-embryonic development / positive regulation of protein-containing complex assembly / male gonad development / intrinsic apoptotic signaling pathway in response to DNA damage / Signaling by BRAF and RAF1 fusions / positive regulation of neuron apoptotic process / microtubule binding / spermatogenesis / regulation of apoptotic process / in utero embryonic development / mitochondrial outer membrane / positive regulation of apoptotic process / apoptotic process / protein kinase binding / mitochondrion / membrane / cytosol 類似検索 - 分子機能
ジャーナル: Acta Crystallogr D Biol Crystallogr / 年: 2015 タイトル: Structural basis of Deerpox virus-mediated inhibition of apoptosis. 著者: Denis R Burton / Sofia Caria / Bevan Marshall / Michele Barry / Marc Kvansakul / 要旨: Apoptosis is a key innate defence mechanism to eliminate virally infected cells. To counteract premature host-cell apoptosis, poxviruses have evolved numerous molecular strategies, including the use ...Apoptosis is a key innate defence mechanism to eliminate virally infected cells. To counteract premature host-cell apoptosis, poxviruses have evolved numerous molecular strategies, including the use of Bcl-2 proteins, to ensure their own survival. Here, it is reported that the Deerpox virus inhibitor of apoptosis, DPV022, only engages a highly restricted set of death-inducing Bcl-2 proteins, including Bim, Bax and Bak, with modest affinities. Structural analysis reveals that DPV022 adopts a Bcl-2 fold with a dimeric domain-swapped topology and binds pro-death Bcl-2 proteins via two conserved ligand-binding grooves found on opposite sides of the dimer. Structures of DPV022 bound to Bim, Bak and Bax BH3 domains reveal that a partial obstruction of the binding groove is likely to be responsible for the modest affinities of DPV022 for BH3 domains. These findings reveal that domain-swapped dimeric Bcl-2 folds are not unusual and may be found more widely in viruses. Furthermore, the modest affinities of DPV022 for pro-death Bcl-2 proteins suggest that two distinct classes of anti-apoptotic viral Bcl-2 proteins exist: those that are monomeric and tightly bind a range of death-inducing Bcl-2 proteins, and others such as DPV022 that are dimeric and only bind a very limited number of death-inducing Bcl-2 proteins with modest affinities.
モノクロメーター: DOUBLE CRYSTAL MONOCHROMATOR (SI111) プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray
放射波長
ID
波長 (Å)
相対比
1
0.9537
1
2
1.5498
1
反射
解像度: 2.7→94.39 Å / Num. obs: 6039 / % possible obs: 100 % / Observed criterion σ(I): 2 / 冗長度: 10 % / Biso Wilson estimate: 65.25 Å2 / Rmerge(I) obs: 0.08 / Net I/σ(I): 19.5
反射 シェル
解像度: 2.7→2.83 Å / 冗長度: 10.5 % / Rmerge(I) obs: 0.89 / Mean I/σ(I) obs: 2.8 / % possible all: 100
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解析
ソフトウェア
名称
バージョン
分類
PHENIX
(PHENIX.REFINE)
精密化
XDS
データ削減
Aimless
データスケーリング
SHELX
D
位相決定
精密化
構造決定の手法: 単一同系置換・異常分散 開始モデル: NONE 解像度: 2.7→19.99 Å / SU ML: 0.39 / σ(F): 2 / 位相誤差: 29.54 / 立体化学のターゲット値: ML 詳細: RESIDUES FROM 1 AND 2 AND FROM 138 TO 155 ARE MISSING IN DPV022. IN BIM,THE RESIDUES 50 AND 55 AS WELL AS 74-76
Rfactor
反射数
%反射
Rfree
0.2206
273
4.6 %
Rwork
0.2051
-
-
obs
0.2059
5980
99.85 %
溶媒の処理
減衰半径: 0.9 Å / VDWプローブ半径: 1.11 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL