登録情報 データベース : EMDB / ID : EMD-25035 ダウンロードとリンクタイトル Cryo-EM 3D map of the human Exostosin-1 and Exostosin-2 heterodimer マップデータ 詳細 試料複合体 : hEXT1/2タンパク質・ペプチド : Exostosin-1タンパク質・ペプチド : Exostosin-2 詳細 キーワード exostosin1 / exostosin2 / glycosyltransferase / heparan sulfate / TRANSFERASE機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
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 / chondrocyte hypertrophy / embryonic skeletal joint development / hematopoietic stem cell migration to bone marrow / fluid transport / tight junction organization / glucuronosyltransferase activity / limb joint morphogenesis / Defective EXT2 causes exostoses 2 / Defective EXT1 causes exostoses 1, TRPS2 and CHDS / heparin proteoglycan biosynthetic process / sebaceous gland development / glomerular basement membrane development / response to heparin / stomach development / glycosaminoglycan biosynthetic process / HS-GAG biosynthesis / glandular epithelial cell differentiation / lymphocyte migration into lymphoid organs / sulfation / chondrocyte proliferation / dendritic cell migration / endochondral bone morphogenesis / dendrite self-avoidance / heparan sulfate proteoglycan biosynthetic process / acetylglucosaminyltransferase activity / endochondral bone growth / podocyte differentiation / hematopoietic stem cell homeostasis / cartilage development involved in endochondral bone morphogenesis / sodium ion homeostasis / basement membrane organization / vocalization behavior / endochondral ossification / vacuole organization / olfactory bulb development / cranial skeletal system development / multicellular organismal-level water homeostasis / leukocyte tethering or rolling / endoderm development / polysaccharide biosynthetic process / fear response / response to light intensity / optic nerve development / regulation of tumor necrosis factor-mediated signaling pathway / protein N-linked glycosylation / collagen fibril organization / neural crest cell differentiation / ossification involved in bone maturation / stem cell division / hair follicle morphogenesis / cell adhesion mediated by integrin / : / heart contraction / epithelial tube branching involved in lung morphogenesis / antigen processing and presentation / glycosyltransferase activity / mesoderm development / motor behavior / mesoderm formation / social behavior / cell fate commitment / blood vessel remodeling / catalytic complex / fibroblast growth factor receptor signaling pathway / hematopoietic stem cell differentiation / canonical Wnt signaling pathway / chondrocyte differentiation / BMP signaling pathway / bone resorption / gastrulation / cellular response to fibroblast growth factor stimulus / ossification / axon guidance / synaptic transmission, glutamatergic / wound healing / protein catabolic process / cellular response to virus / regulation of blood pressure / vasodilation / multicellular organism growth / protein-containing complex assembly / gene expression / protein heterodimerization activity / Golgi membrane / synapse 類似検索 - 分子機能 Exostosin-like / Exostosin, GT47 domain / Exostosin GT47 domain / Glycosyl transferase 64 domain / Glycosyl transferase family 64 domain / Nucleotide-diphospho-sugar transferases 類似検索 - ドメイン・相同性生物種 Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.1 Å 詳細 データ登録者Li H 資金援助 米国, 1件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Cancer Institute (NIH/NCI) CA231466 米国
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 登録 2021年9月28日 - ヘッダ(付随情報) 公開 2022年9月28日 - マップ公開 2022年9月28日 - 更新 2024年11月20日 - 現状 2024年11月20日 処理サイト : RCSB / 状態 : 公開
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