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-Structure paper
| タイトル | Filament structures unveil the dynamic organization of human acetyl-CoA carboxylase. |
|---|---|
| ジャーナル・号・ページ | Sci Adv, Vol. 10, Issue 41, Page eado4880, Year 2024 |
| 掲載日 | 2024年10月11日 |
著者 | Fayang Zhou / Yuanyuan Zhang / Yuyao Zhu / Qiang Zhou / Yigong Shi / Qi Hu / ![]() |
| PubMed 要旨 | Human acetyl-coenzyme A (CoA) carboxylases (ACCs) catalyze the carboxylation of acetyl-CoA, which is the rate-limiting step in fatty acid synthesis. The molecular mechanism underlying the dynamic ...Human acetyl-coenzyme A (CoA) carboxylases (ACCs) catalyze the carboxylation of acetyl-CoA, which is the rate-limiting step in fatty acid synthesis. The molecular mechanism underlying the dynamic organization of ACCs is largely unknown. Here, we determined the cryo-electron microscopy (EM) structure of human ACC1 in its inactive state, which forms a unique filament structure and is in complex with acetyl-CoA. We also determined the cryo-EM structure of human ACC1 activated by dephosphorylation and citrate treatment, at a resolution of 2.55 Å. Notably, the covalently linked biotin binds to a site that is distant from the acetyl-CoA binding site when acetyl-CoA is absent, suggesting a potential coordination between biotin binding and acetyl-CoA binding. These findings provide insights into the structural dynamics and regulatory mechanisms of human ACCs. |
リンク | Sci Adv / PubMed:39383219 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.55 - 4.14 Å |
| 構造データ | EMDB-38432, PDB-8xkz: EMDB-38433, PDB-8xl0: EMDB-38434, PDB-8xl1: EMDB-38435, PDB-8xl2: |
| 化合物 | ![]() ChemComp-BTN: ![]() ChemComp-ACO: |
| 由来 |
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キーワード | LIGASE / Biotin-dependent carboxylase |
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