8psk: Difference between revisions
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==Asymmetric unit of the yeast fatty acid synthase in the non-rotated state with ACP at the ketosynthase domain (FASx sample)== | |||
<StructureSection load='8psk' size='340' side='right'caption='[[8psk]], [[Resolution|resolution]] 2.80Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[8psk]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8PSK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8PSK FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.8Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8psk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8psk OCA], [https://pdbe.org/8psk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8psk RCSB], [https://www.ebi.ac.uk/pdbsum/8psk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8psk ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/FAS1_YEAST FAS1_YEAST] Fatty acid synthetase catalyzes the formation of long-chain fatty acids from acetyl-CoA, malonyl-CoA and NADPH. The beta subunit contains domains for: [acyl-carrier-protein] acetyltransferase and malonyltransferase, S-acyl fatty acid synthase thioesterase, enoyl-[acyl-carrier-protein] reductase, and 3-hydroxypalmitoyl-[acyl-carrier-protein] dehydratase. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Fatty acids (FAs) play a central metabolic role in living cells as constituents of membranes, cellular energy reserves, and second messenger precursors. A 2.6 MDa FA synthase (FAS), where the enzymatic reactions and structures are known, is responsible for FA biosynthesis in yeast. Essential in the yeast FAS catalytic cycle is the acyl carrier protein (ACP) that actively shuttles substrates, biosynthetic intermediates, and products from one active site to another. We resolve the S. cerevisiae FAS structure at 1.9 A, elucidating cofactors and water networks involved in their recognition. Structural snapshots of ACP domains bound to various enzymatic domains allow the reconstruction of a full yeast FA biosynthesis cycle. The structural information suggests that each FAS functional unit could accommodate exogenous proteins to incorporate various enzymatic activities, and we show proof-of-concept experiments where ectopic proteins are used to modulate FAS product profiles. | |||
Reconstruction of a fatty acid synthesis cycle from acyl carrier protein and cofactor structural snapshots.,Singh K, Bunzel G, Graf B, Yip KM, Neumann-Schaal M, Stark H, Chari A Cell. 2023 Nov 9;186(23):5054-5067.e16. doi: 10.1016/j.cell.2023.10.009. PMID:37949058<ref>PMID:37949058</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 8psk" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Saccharomyces cerevisiae]] | |||
[[Category: Bunzel G]] | |||
[[Category: Chari A]] | |||
[[Category: Graf B]] | |||
[[Category: Singh K]] | |||
[[Category: Stark H]] | |||
[[Category: Yip KM]] | |||
Revision as of 10:32, 22 November 2023
Asymmetric unit of the yeast fatty acid synthase in the non-rotated state with ACP at the ketosynthase domain (FASx sample)Asymmetric unit of the yeast fatty acid synthase in the non-rotated state with ACP at the ketosynthase domain (FASx sample)
Structural highlights
FunctionFAS1_YEAST Fatty acid synthetase catalyzes the formation of long-chain fatty acids from acetyl-CoA, malonyl-CoA and NADPH. The beta subunit contains domains for: [acyl-carrier-protein] acetyltransferase and malonyltransferase, S-acyl fatty acid synthase thioesterase, enoyl-[acyl-carrier-protein] reductase, and 3-hydroxypalmitoyl-[acyl-carrier-protein] dehydratase. Publication Abstract from PubMedFatty acids (FAs) play a central metabolic role in living cells as constituents of membranes, cellular energy reserves, and second messenger precursors. A 2.6 MDa FA synthase (FAS), where the enzymatic reactions and structures are known, is responsible for FA biosynthesis in yeast. Essential in the yeast FAS catalytic cycle is the acyl carrier protein (ACP) that actively shuttles substrates, biosynthetic intermediates, and products from one active site to another. We resolve the S. cerevisiae FAS structure at 1.9 A, elucidating cofactors and water networks involved in their recognition. Structural snapshots of ACP domains bound to various enzymatic domains allow the reconstruction of a full yeast FA biosynthesis cycle. The structural information suggests that each FAS functional unit could accommodate exogenous proteins to incorporate various enzymatic activities, and we show proof-of-concept experiments where ectopic proteins are used to modulate FAS product profiles. Reconstruction of a fatty acid synthesis cycle from acyl carrier protein and cofactor structural snapshots.,Singh K, Bunzel G, Graf B, Yip KM, Neumann-Schaal M, Stark H, Chari A Cell. 2023 Nov 9;186(23):5054-5067.e16. doi: 10.1016/j.cell.2023.10.009. PMID:37949058[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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