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-Structure paper
| タイトル | Structural insights into translocation and tailored synthesis of hyaluronan. |
|---|---|
| ジャーナル・号・ページ | Nat Struct Mol Biol, Vol. 32, Issue 1, Page 161-171, Year 2025 |
| 掲載日 | 2024年9月25日 |
著者 | Ireneusz Górniak / Zachery Stephens / Satchal K Erramilli / Tomasz Gawda / Anthony A Kossiakoff / Jochen Zimmer / ![]() |
| PubMed 要旨 | Hyaluronan (HA) is an essential component of the vertebrate extracellular matrix. It is a heteropolysaccharide of N-acetylglucosamine (GlcNAc) and glucuronic acid (GlcA) reaching several megadaltons ...Hyaluronan (HA) is an essential component of the vertebrate extracellular matrix. It is a heteropolysaccharide of N-acetylglucosamine (GlcNAc) and glucuronic acid (GlcA) reaching several megadaltons in healthy tissues. HA is synthesized and translocated in a coupled reaction by HA synthase (HAS). Here, structural snapshots of HAS provide insights into HA biosynthesis, from substrate recognition to HA elongation and translocation. We monitor the extension of a GlcNAc primer with GlcA, reveal the coordination of the uridine diphosphate product by a conserved gating loop and capture the opening of a translocation channel to coordinate a translocating HA polymer. Furthermore, we identify channel-lining residues that modulate HA product lengths. Integrating structural and biochemical analyses suggests an avenue for polysaccharide engineering based on finely tuned enzymatic activity and HA coordination. |
リンク | Nat Struct Mol Biol / PubMed:39322765 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.0 - 3.4 Å |
| 構造データ | EMDB-40591, PDB-8smm: EMDB-40594, PDB-8smn: EMDB-40598, PDB-8smp: EMDB-40622, PDB-8snc: EMDB-40623, PDB-8snd: EMDB-40624, PDB-8sne: |
| 化合物 | ![]() ChemComp-HOH: ![]() ChemComp-UDP: ![]() ChemComp-MG: ![]() ChemComp-Y01: ![]() ChemComp-MN: ![]() ChemComp-3PE: ![]() ChemComp-NAG: ![]() ChemComp-UGA: |
| 由来 |
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キーワード | Transferase/Immune System / hyaluronic acid / hyaluronan / HA / HAS / glycosyltransferase / GT / membrane protein / Fab / Transferase-Immune System complex / TRANSFERASE / nanobody / n-acetylglucosamine / glucuronic acid |
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homo sapiens (ヒト)
Paramecium bursaria Chlorella virus 1 (ウイルス)
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