+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7scj | ||||||
---|---|---|---|---|---|---|---|
タイトル | Cryo-EM structure of the human Exostosin-1 and Exostosin-2 heterodimer in complex with a 4-sugar oligosaccharide acceptor analog | ||||||
要素 |
| ||||||
キーワード | TRANSFERASE / exostosin1 / exostosin2 / glycosyltransferase / heparan sulfate / acceptor | ||||||
機能・相同性 | 機能・相同性情報 glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase / N-acetylglucosaminyl-proteoglycan 4-beta-glucuronosyltransferase / hypersensitivity / heart field specification / lymphocyte adhesion to endothelial cell of high endothelial venule / heparan sulfate N-acetylglucosaminyltransferase activity / glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity / N-acetylglucosaminyl-proteoglycan 4-beta-glucuronosyltransferase activity / smoothened signaling pathway involved in lung development / developmental growth involved in morphogenesis ...glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase / N-acetylglucosaminyl-proteoglycan 4-beta-glucuronosyltransferase / hypersensitivity / heart field specification / lymphocyte adhesion to endothelial cell of high endothelial venule / heparan sulfate N-acetylglucosaminyltransferase activity / glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase activity / N-acetylglucosaminyl-proteoglycan 4-beta-glucuronosyltransferase activity / smoothened signaling pathway involved in lung development / developmental growth involved in morphogenesis / sweat gland development / perichondral bone morphogenesis / mesenchymal cell differentiation involved in bone development / response to leukemia inhibitory factor / UDP-N-acetylglucosamine transferase complex / chondroitin sulfate metabolic process / response to heparin / chondrocyte hypertrophy / embryonic skeletal joint development / hematopoietic stem cell migration to bone marrow / heparan sulfate proteoglycan biosynthetic process, polysaccharide chain biosynthetic process / fluid transport / glucuronosyltransferase activity / limb joint morphogenesis / tight junction organization / heparin biosynthetic process / Defective EXT2 causes exostoses 2 / Defective EXT1 causes exostoses 1, TRPS2 and CHDS / stomach development / sebaceous gland development / glomerular basement membrane development / heparan sulfate proteoglycan biosynthetic process / HS-GAG biosynthesis / glycosaminoglycan biosynthetic process / dendrite self-avoidance / lymphocyte migration into lymphoid organs / chondrocyte proliferation / sulfation / hematopoietic stem cell homeostasis / dendritic cell migration / endochondral bone morphogenesis / glandular epithelial cell differentiation / endochondral bone growth / acetylglucosaminyltransferase activity / sodium ion homeostasis / podocyte differentiation / basement membrane organization / polysaccharide biosynthetic process / cartilage development involved in endochondral bone morphogenesis / vocalization behavior / cranial skeletal system development / stem cell division / vacuole organization / olfactory bulb development / leukocyte tethering or rolling / multicellular organismal-level water homeostasis / endochondral ossification / endoderm development / response to light intensity / fear response / protein N-linked glycosylation / regulation of tumor necrosis factor-mediated signaling pathway / cellular response to fibroblast growth factor stimulus / collagen fibril organization / neural crest cell differentiation / motor behavior / ossification involved in bone maturation / cell adhesion mediated by integrin / optic nerve development / hair follicle morphogenesis / epithelial tube branching involved in lung morphogenesis / heart contraction / glycosyltransferase activity / protein glycosylation / mesoderm development / antigen processing and presentation / social behavior / mesoderm formation / catalytic complex / hematopoietic stem cell differentiation / blood vessel remodeling / fibroblast growth factor receptor signaling pathway / cell fate commitment / canonical Wnt signaling pathway / BMP signaling pathway / chondrocyte differentiation / bone resorption / gastrulation / ossification / axon guidance / synaptic transmission, glutamatergic / wound healing / protein catabolic process / multicellular organism growth / cellular response to virus / regulation of blood pressure / vasodilation / gene expression / protein-containing complex assembly / protein heterodimerization activity 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.4 Å | ||||||
データ登録者 | Li, H. / Li, H. | ||||||
資金援助 | 米国, 1件
| ||||||
引用 | ジャーナル: Nat Chem Biol / 年: 2023 タイトル: Structural basis for heparan sulfate co-polymerase action by the EXT1-2 complex. 著者: Hua Li / Digantkumar Chapla / Robert A Amos / Annapoorani Ramiah / Kelley W Moremen / Huilin Li / 要旨: Heparan sulfate (HS) proteoglycans are extended (-GlcAβ1,4GlcNAcα1,4-) co-polymers containing decorations of sulfation and epimerization that are linked to cell surface and extracellular matrix ...Heparan sulfate (HS) proteoglycans are extended (-GlcAβ1,4GlcNAcα1,4-) co-polymers containing decorations of sulfation and epimerization that are linked to cell surface and extracellular matrix proteins. In mammals, HS repeat units are extended by an obligate heterocomplex of two exostosin family members, EXT1 and EXT2, where each protein monomer contains distinct GT47 (GT-B fold) and GT64 (GT-A fold) glycosyltransferase domains. In this study, we generated human EXT1-EXT2 (EXT1-2) as a functional heterocomplex and determined its structure in the presence of bound donor and acceptor substrates. Structural data and enzyme activity of catalytic site mutants demonstrate that only two of the four glycosyltransferase domains are major contributors to co-polymer syntheses: the EXT1 GT-B fold β1,4GlcA transferase domain and the EXT2 GT-A fold α1,4GlcNAc transferase domain. The two catalytic sites are over 90 Å apart, indicating that HS is synthesized by a dissociative process that involves a single catalytic site on each monomer. | ||||||
履歴 |
|
-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
---|
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7scj.cif.gz | 220.3 KB | 表示 | PDBx/mmCIF形式 |
---|---|---|---|---|
PDB形式 | pdb7scj.ent.gz | 172.3 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7scj.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7scj_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
---|---|---|---|---|
文書・詳細版 | 7scj_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 7scj_validation.xml.gz | 46.1 KB | 表示 | |
CIF形式データ | 7scj_validation.cif.gz | 68.6 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/sc/7scj ftp://data.pdbj.org/pub/pdb/validation_reports/sc/7scj | HTTPS FTP |
-関連構造データ
関連構造データ | 25036MC 7schC 7sckC 7uqxC 7uqyC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
---|---|
類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
|
---|---|
1 |
|
-要素
-タンパク質 , 2種, 2分子 AB
#1: タンパク質 | 分子量: 83404.023 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EXT1 / 発現宿主: Mammalia (両生類) 参照: UniProt: Q16394, glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase, N-acetylglucosaminyl-proteoglycan 4-beta-glucuronosyltransferase |
---|---|
#2: タンパク質 | 分子量: 77180.984 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: EXT2 / 発現宿主: Mammalia (両生類) 参照: UniProt: Q93063, glucuronosyl-N-acetylglucosaminyl-proteoglycan 4-alpha-N-acetylglucosaminyltransferase, N-acetylglucosaminyl-proteoglycan 4-beta-glucuronosyltransferase |
-糖 , 3種, 3分子
#3: 多糖 | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
---|---|
#4: 多糖 | 2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-beta-D-glucopyranuronic acid-(1-4)-2-acetamido-2- ...2-acetamido-2-deoxy-alpha-D-glucopyranose-(1-4)-beta-D-glucopyranuronic acid-(1-4)-2-acetamido-2-deoxy-alpha-D-glucopyranose タイプ: oligosaccharide / 分子量: 600.525 Da / 分子数: 1 / 由来タイプ: 組換発現 |
#5: 糖 | ChemComp-NAG / |
-非ポリマー , 1種, 2分子
#6: 化合物 |
---|
-詳細
研究の焦点であるリガンドがあるか | Y |
---|
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: hEXT1/2 / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
由来(天然) | 生物種: Homo sapiens (ヒト) | |||||||||||||||
由来(組換発現) | 生物種: Mammalia (両生類) | |||||||||||||||
緩衝液 | pH: 7 | |||||||||||||||
緩衝液成分 |
| |||||||||||||||
試料 | 濃度: 0.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R2/1 | |||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 299 K |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
---|---|
顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: OTHER |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 105000 X / Cs: 2.7 mm / C2レンズ絞り径: 70 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER 最高温度: 193 K / 最低温度: 193 K / Residual tilt: 0.05 mradians |
撮影 | 平均露光時間: 1.5 sec. / 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 3080 |
画像スキャン | 横: 5760 / 縦: 4092 |
-解析
EMソフトウェア |
| ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1938290 | ||||||||||||||||||||
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 91157 / 対称性のタイプ: POINT | ||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL |