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-Structure paper
タイトル | Snapshots of acyl carrier protein shuttling in human fatty acid synthase. |
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ジャーナル・号・ページ | Nature, Vol. 641, Issue 8062, Page 520-528, Year 2025 |
掲載日 | 2025年2月20日 |
![]() | Kollin Schultz / Pedro Costa-Pinheiro / Lauren Gardner / Laura V Pinheiro / Julio Ramirez-Solis / Sarah M Gardner / Kathryn E Wellen / Ronen Marmorstein / ![]() |
PubMed 要旨 | The mammalian fatty acid synthase (FASN) enzyme is a dynamic multienzyme that belongs to the megasynthase family. In mammals, a single gene encodes six catalytically active domains and a flexibly ...The mammalian fatty acid synthase (FASN) enzyme is a dynamic multienzyme that belongs to the megasynthase family. In mammals, a single gene encodes six catalytically active domains and a flexibly tethered acyl carrier protein (ACP) domain that shuttles intermediates between active sites for fatty acid biosynthesis. FASN is an essential enzyme in mammalian development through the role that fatty acids have in membrane formation, energy storage, cell signalling and protein modifications. Thus, FASN is a promising target for treatment of a large variety of diseases including cancer, metabolic dysfunction-associated fatty liver disease, and viral and parasite infections. The multi-faceted mechanism of FASN and the dynamic nature of the protein, in particular of the ACP, have made it challenging to understand at the molecular level. Here we report cryo-electron microscopy structures of human FASN in a multitude of conformational states with NADPH and NADP plus acetoacetyl-CoA present, including structures with the ACP stalled at the dehydratase (DH) and enoyl-reductase (ER) domains. We show that FASN activity in vitro and de novo lipogenesis in cells is inhibited by mutations at the ACP-DH and ACP-ER interfaces. Together, these studies provide new molecular insights into the dynamic nature of FASN and the ACP shuttling mechanism, with implications for developing improved FASN-targeted therapeutics. |
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手法 | EM (単粒子) |
解像度 | 3.11 - 3.66 Å |
構造データ | EMDB-43187, PDB-8vf7: EMDB-43199, PDB-8vg4: EMDB-43337, PDB-8vle: EMDB-43340, PDB-8vlo: EMDB-43341, PDB-8vlp: EMDB-43350, PDB-8vm0: EMDB-43352, PDB-8vm5: EMDB-43353, PDB-8vm6: EMDB-43354, PDB-8vm7: EMDB-43355, PDB-8vmc: EMDB-43356, PDB-8vmd: ![]() EMDB-43414: Consensus map of hFASN/NADPH State 1 ![]() EMDB-43415: Focused map of the modifying region of hFASN/NADPH State 1 ![]() EMDB-43417: Focused map of the condensing region of hFASN/NADPH State 1 ![]() EMDB-43441: Consensus map of hFASN/NADPH State 5 ![]() EMDB-43442: Focused map of the modifying region of hFASN/NADPH State 5 ![]() EMDB-43445: Focused map of the condensing region of hFASN/NADPH State 5 ![]() EMDB-43447: Consensus map of hFASN/NADPH State 3 ![]() EMDB-43448: Focused map of the modifying region of hFASN/NADPH State 3 ![]() EMDB-43449: Focused map of the condensing region of hFASN/NADPH State 3 ![]() EMDB-43454: Consensus map of hFASN/NADPH State 7 ![]() EMDB-43456: Focused map of the modifying region of hFASN/NADPH State 7 ![]() EMDB-43457: Focused map of the condensing region of hFASN/NADPH State 7 ![]() EMDB-43458: Consensus map of hFASN/NADPH State 2 ![]() EMDB-43459: Focused map of the modifying region of hFASN/NADPH State 2 ![]() EMDB-43465: Focused map of the condensing region of hFASN/NADPH State 2 ![]() EMDB-43466: Consensus map of hFASN/NADPH State 4 ![]() EMDB-43467: Focused map of the modifying region of hFASN/NADPH State 4 ![]() EMDB-43468: Focused map of the condensing region of hFASN/NADPH State 4 ![]() EMDB-43469: Consensus map of hFASN/NADPH State 6 ![]() EMDB-43470: Focused map of the modifying region of hFASN/NADPH State 6 ![]() EMDB-43471: Focused map of the condensing region of hFASN/NADPH State 6 ![]() EMDB-43472: Consensus map of hFASN/NADPH State 8 ![]() EMDB-43473: Focused map of the modifying region of hFASN/NADPH State 8 ![]() EMDB-43474: Focus map of the condensing region of hFASN/NADPH State 8 |
化合物 | ![]() ChemComp-NDP: ![]() ChemComp-NAP: |
由来 |
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![]() | BIOSYNTHETIC PROTEIN / Megasynthase / Lipogenesis |