- EMDB-1742: Pyruvate carboxylase from S. aureus after addition of acetyl-Coa,... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-1742
タイトル
Pyruvate carboxylase from S. aureus after addition of acetyl-Coa, AMP-PNP, KHCO3 and oxaloacetate (based on a subset obtained after maximum likelihood based classification)
マップデータ
Pyruvate carboxylase from S. aureus after addition of actyl-CoA, AMP-PNP, KHCO3 and oxaloacetate (based on a subset obtained after maximum likelihood based classification)
試料
試料: Pyruvate carboxylase from S. aureus after addition of acetyl-Coa, AMP-PNP, KHCO3 and oxaloacetate (based on a subset obtained after maximum likelihood based classification)
ジャーナル: Structure / 年: 2010 タイトル: Cryo-EM analysis reveals new insights into the mechanism of action of pyruvate carboxylase. 著者: Gorka Lasso / Linda P C Yu / David Gil / Song Xiang / Liang Tong / Mikel Valle / 要旨: Pyruvate carboxylase (PC) is a conserved multifunctional enzyme linked to important metabolic diseases. PC homotetramer is arranged in two layers with two opposing monomers per layer. Cryo-EM ...Pyruvate carboxylase (PC) is a conserved multifunctional enzyme linked to important metabolic diseases. PC homotetramer is arranged in two layers with two opposing monomers per layer. Cryo-EM explores the conformational variability of PC in the presence of different substrates. The results demonstrate that the biotin-carboxyl carrier protein (BCCP) domain localizes near the biotin carboxylase (BC) domain of its own monomer and travels to the carboxyltransferase (CT) domain of the opposite monomer. All density maps show noticeable conformational differences between layers, mainly for the BCCP and BC domains. This asymmetry may be indicative of a coordination mechanism where monomers from different layers catalyze the BC and CT reactions consecutively. A conformational change of the PC tetramerization (PT) domain suggests a new functional role in communication. A long-range communication pathway between subunits in different layers, via interacting PT-PT and BC-BC domains, may be responsible for the cooperativity of PC from Staphylococcus aureus.
ダウンロード / ファイル: emd_1742.map.gz / 形式: CCP4 / 大きさ: 25.6 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
Pyruvate carboxylase from S. aureus after addition of actyl-CoA, AMP-PNP, KHCO3 and oxaloacetate (based on a subset obtained after maximum likelihood based classification)
全体 : Pyruvate carboxylase from S. aureus after addition of acetyl-Coa,...
全体
名称: Pyruvate carboxylase from S. aureus after addition of acetyl-Coa, AMP-PNP, KHCO3 and oxaloacetate (based on a subset obtained after maximum likelihood based classification)
要素
試料: Pyruvate carboxylase from S. aureus after addition of acetyl-Coa, AMP-PNP, KHCO3 and oxaloacetate (based on a subset obtained after maximum likelihood based classification)
タンパク質・ペプチド: Pyruvate carboxylase
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超分子 #1000: Pyruvate carboxylase from S. aureus after addition of acetyl-Coa,...
超分子
名称: Pyruvate carboxylase from S. aureus after addition of acetyl-Coa, AMP-PNP, KHCO3 and oxaloacetate (based on a subset obtained after maximum likelihood based classification) タイプ: sample / ID: 1000 / 集合状態: Homotetramer / Number unique components: 1
照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.0 mm / 倍率(公称値): 40000
試料ステージ
試料ホルダー: Single tilt cryoholder / 試料ホルダーモデル: GATAN LIQUID NITROGEN
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画像解析
CTF補正
詳細: By defocus groups (Wiener filter)
最終 再構成
想定した対称性 - 点群: C2 (2回回転対称) / アルゴリズム: OTHER / 解像度のタイプ: BY AUTHOR / 解像度: 9.1 Å / 解像度の算出法: OTHER / ソフトウェア - 名称: Spider xmipp 詳細: The map was obtained from a subset of particles obtained after maximum likelihood classification 使用した粒子像数: 20695