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- PDB-6ql6: Structure of Fatty acid synthase complex from Saccharomyces cerev... -

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Basic information

Entry
Database: PDB / ID: 6ql6
TitleStructure of Fatty acid synthase complex from Saccharomyces cerevisiae at 2.9 Angstrom
Components
  • Fatty acid synthase subunit alpha
  • Fatty acid synthase subunit beta
KeywordsTRANSFERASE / Fatty acid synthase / Acyl carrier protein / Ketosynthase / Ketoreductase / Enoyl reductase / Dehydratase / Malonyl/palmitoyl transferase / Acetyl transferase / Phosphopantetheine transferase
Function / homology
Function and homology information


: / fatty-acyl-CoA synthase system / : / fatty-acyl-CoA synthase activity / fatty acid synthase complex / (3R)-hydroxyacyl-[acyl-carrier-protein] dehydratase activity / [acyl-carrier-protein] S-acetyltransferase / palmitoyltransferase activity / [acyl-carrier-protein] S-acetyltransferase activity / oleoyl-[acyl-carrier-protein] hydrolase ...: / fatty-acyl-CoA synthase system / : / fatty-acyl-CoA synthase activity / fatty acid synthase complex / (3R)-hydroxyacyl-[acyl-carrier-protein] dehydratase activity / [acyl-carrier-protein] S-acetyltransferase / palmitoyltransferase activity / [acyl-carrier-protein] S-acetyltransferase activity / oleoyl-[acyl-carrier-protein] hydrolase / (3R)-3-hydroxypalmitoyl-[acyl-carrier-protein] dehydratase activity / holo-[acyl-carrier-protein] synthase activity / [acyl-carrier-protein] S-malonyltransferase / [acyl-carrier-protein] S-malonyltransferase activity / fatty acid synthase activity / 3-hydroxyacyl-[acyl-carrier-protein] dehydratase / (3R)-3-hydroxymyristoyl-[acyl-carrier-protein] dehydratase activity / beta-ketoacyl-[acyl-carrier-protein] synthase I / 3-oxoacyl-[acyl-carrier-protein] reductase / 3-oxoacyl-[acyl-carrier-protein] reductase (NADPH) activity / enoyl-[acyl-carrier-protein] reductase (NADH) / long-chain fatty acid biosynthetic process / enoyl-[acyl-carrier-protein] reductase (NADH) activity / 3-oxoacyl-[acyl-carrier-protein] synthase activity / lipid droplet / magnesium ion binding / mitochondrion / cytosol / cytoplasm
Similarity search - Function
: / Fatty acid synthase, meander beta sheet domain / Fatty acid synthase subunit beta, N-terminal domain / N-terminal domain in fatty acid synthase subunit beta / Fatty acid synthase meander beta sheet domain / Fatty acid synthase beta subunit AflB /Fas1-like, fungi / Fatty acid synthase subunit alpha, acyl carrier domain / Fatty acid synthase subunit alpha Acyl carrier domain / Fatty acid synthase beta subunit AflB /Fas1-like, central domain / Fatty acid synthase alpha subunit, yeast ...: / Fatty acid synthase, meander beta sheet domain / Fatty acid synthase subunit beta, N-terminal domain / N-terminal domain in fatty acid synthase subunit beta / Fatty acid synthase meander beta sheet domain / Fatty acid synthase beta subunit AflB /Fas1-like, fungi / Fatty acid synthase subunit alpha, acyl carrier domain / Fatty acid synthase subunit alpha Acyl carrier domain / Fatty acid synthase beta subunit AflB /Fas1-like, central domain / Fatty acid synthase alpha subunit, yeast / Fatty acid synthase subunit beta/Fas1-like, helical / Fatty acid synthase type I, helical / Fatty acid synthase type I helical domain / Fatty acid synthase / N-terminal of MaoC-like dehydratase / N-terminal half of MaoC dehydratase / Starter unit:ACP transacylase / Starter unit:ACP transacylase in aflatoxin biosynthesis / Holo-[acyl carrier protein] synthase / Phosphopantetheine-protein transferase domain / MaoC-like dehydratase domain / MaoC like domain / 4'-phosphopantetheinyl transferase domain / 4'-phosphopantetheinyl transferase domain superfamily / 4'-phosphopantetheinyl transferase superfamily / HotDog domain superfamily / Acyl transferase domain superfamily / Acyl transferase / Acyl transferase domain / Acyl transferase domain in polyketide synthase (PKS) enzymes. / Acyl transferase/acyl hydrolase/lysophospholipase / Ketosynthase family 3 (KS3) domain profile. / Beta-ketoacyl synthase, active site / Ketosynthase family 3 (KS3) active site signature. / Polyketide synthase, beta-ketoacyl synthase domain / Beta-ketoacyl synthase, N-terminal / Beta-ketoacyl synthase, C-terminal / Beta-ketoacyl synthase, N-terminal domain / Beta-ketoacyl synthase, C-terminal domain / Phosphopantetheine attachment site. / Thiolase-like / Carrier protein (CP) domain profile. / Phosphopantetheine binding ACP domain / Aldolase-type TIM barrel / NAD(P)-binding domain superfamily
Similarity search - Domain/homology
FLAVIN MONONUCLEOTIDE / Chem-J8T / Fatty acid synthase subunit beta / Fatty acid synthase subunit alpha
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.9 Å
AuthorsSingh, K. / Graf, B. / Linden, A. / Sautner, V. / Urlaub, H. / Tittmann, K. / Stark, H. / Chari, A.
Funding support Germany, 1items
OrganizationGrant numberCountry
German Research FoundationSFB860-TP A5 Germany
CitationJournal: Cell / Year: 2020
Title: Discovery of a Regulatory Subunit of the Yeast Fatty Acid Synthase.
Authors: Kashish Singh / Benjamin Graf / Andreas Linden / Viktor Sautner / Henning Urlaub / Kai Tittmann / Holger Stark / Ashwin Chari /
Abstract: Fatty acid synthases (FASs) are central to metabolism but are also of biotechnological interest for the production of fine chemicals and biofuels from renewable resources. During fatty acid ...Fatty acid synthases (FASs) are central to metabolism but are also of biotechnological interest for the production of fine chemicals and biofuels from renewable resources. During fatty acid synthesis, the growing fatty acid chain is thought to be shuttled by the dynamic acyl carrier protein domain to several enzyme active sites. Here, we report the discovery of a γ subunit of the 2.6 megadalton α-βS. cerevisiae FAS, which is shown by high-resolution structures to stabilize a rotated FAS conformation and rearrange ACP domains from equatorial to axial positions. The γ subunit spans the length of the FAS inner cavity, impeding reductase activities of FAS, regulating NADPH turnover by kinetic hysteresis at the ketoreductase, and suppressing off-pathway reactions at the enoylreductase. The γ subunit delineates the functional compartment within FAS. As a scaffold, it may be exploited to incorporate natural and designed enzymatic activities that are not present in natural FAS.
History
DepositionJan 31, 2019Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 18, 2020Provider: repository / Type: Initial release
Revision 1.1Mar 25, 2020Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.2Apr 8, 2020Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last

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Structure visualization

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Assembly

Deposited unit
A: Fatty acid synthase subunit alpha
G: Fatty acid synthase subunit beta
B: Fatty acid synthase subunit alpha
C: Fatty acid synthase subunit alpha
D: Fatty acid synthase subunit alpha
E: Fatty acid synthase subunit alpha
F: Fatty acid synthase subunit alpha
H: Fatty acid synthase subunit beta
I: Fatty acid synthase subunit beta
J: Fatty acid synthase subunit beta
K: Fatty acid synthase subunit beta
L: Fatty acid synthase subunit beta
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,613,91824
Polymers2,609,81712
Non-polymers4,10112
Water0
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area174650 Å2
ΔGint-863 kcal/mol
Surface area857060 Å2
MethodPISA

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Components

#1: Protein
Fatty acid synthase subunit alpha /


Mass: 207184.422 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast)
References: UniProt: P19097, fatty-acyl-CoA synthase system, 3-oxoacyl-[acyl-carrier-protein] reductase, beta-ketoacyl-[acyl-carrier-protein] synthase I
#2: Protein
Fatty acid synthase subunit beta /


Mass: 227785.141 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae (brewer's yeast)
References: UniProt: P07149, fatty-acyl-CoA synthase system, 3-hydroxyacyl-[acyl-carrier-protein] dehydratase, enoyl-[acyl-carrier-protein] reductase (NADH), [acyl-carrier-protein] S- ...References: UniProt: P07149, fatty-acyl-CoA synthase system, 3-hydroxyacyl-[acyl-carrier-protein] dehydratase, enoyl-[acyl-carrier-protein] reductase (NADH), [acyl-carrier-protein] S-acetyltransferase, [acyl-carrier-protein] S-malonyltransferase, oleoyl-[acyl-carrier-protein] hydrolase
#3: Chemical
ChemComp-J8T / [(3~{R})-4-azanyl-2,2-dimethyl-3-oxidanyl-4-oxidanylidene-butyl] dihydrogen phosphate


Mass: 227.152 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C6H14NO6P
#4: Chemical
ChemComp-FMN / FLAVIN MONONUCLEOTIDE / RIBOFLAVIN MONOPHOSPHATE / Flavin mononucleotide


Mass: 456.344 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C17H21N4O9P

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Fatty acid synthase at 2.9 Angstrom resolution / Type: COMPLEX / Entity ID: #1-#2 / Source: NATURAL
Molecular weightValue: 2.6 MDa / Experimental value: YES
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Strain: BJ2168 (MATa prc1-407 prb1-1122 pep4-3 leu2 trp1 ura3-52 gal2 tma17::kanMX)
Buffer solutionpH: 6.5
Buffer component
IDConc.NameBuffer-ID
150 mMBisTris pH 6.51
250 mMPotassium acetate1
310 mMMagnesium acetate1
410 mMDithiothreitol1
SpecimenConc.: 0.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid type: Quantifoil R3.5/1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 278 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 132000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 62 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) / Num. of real images: 5441

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Processing

EM software
IDNameVersionCategory
2EPUimage acquisition
4Gctf1.06CTF correction
9RELION3initial Euler assignment
10RELION3final Euler assignment
12RELION33D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1189206
SymmetryPoint symmetry: D3 (2x3 fold dihedral)
3D reconstructionResolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 144526 / Symmetry type: POINT

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