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Yorodumi- PDB-6g2i: Filament of acetyl-CoA carboxylase and BRCT domains of BRCA1 (ACC... -
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Basic information
| Entry | Database: PDB / ID: 6g2i | ||||||||||||
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| Title | Filament of acetyl-CoA carboxylase and BRCT domains of BRCA1 (ACC-BRCT) at 5.9 A resolution | ||||||||||||
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Keywords | LIGASE / Filament / Helical / Multienzyme / Biotin-dependent carboxylase | ||||||||||||
| Function / homology | Function and homology informationhistone H2AK127 ubiquitin ligase activity / histone H2AK129 ubiquitin ligase activity / Defective DNA double strand break response due to BRCA1 loss of function / Defective DNA double strand break response due to BARD1 loss of function / BRCA1-BARD1 complex / acetyl-CoA carboxylase / BRCA1-A complex / negative regulation of centriole replication / fatty-acyl-CoA biosynthetic process / Defective HLCS causes multiple carboxylase deficiency ...histone H2AK127 ubiquitin ligase activity / histone H2AK129 ubiquitin ligase activity / Defective DNA double strand break response due to BRCA1 loss of function / Defective DNA double strand break response due to BARD1 loss of function / BRCA1-BARD1 complex / acetyl-CoA carboxylase / BRCA1-A complex / negative regulation of centriole replication / fatty-acyl-CoA biosynthetic process / Defective HLCS causes multiple carboxylase deficiency / malonyl-CoA biosynthetic process / Biotin transport and metabolism / chordate embryonic development / Fatty acyl-CoA biosynthesis / negative regulation of intracellular estrogen receptor signaling pathway / gamma-tubulin ring complex / ubiquitin-modified histone reader activity / cellular response to indole-3-methanol / ChREBP activates metabolic gene expression / DNA strand resection involved in replication fork processing / acetyl-CoA carboxylase activity / acetyl-CoA metabolic process / homologous recombination / negative regulation of fatty acid biosynthetic process / Carnitine shuttle / Regulation of MITF-M-dependent genes involved in DNA replication, damage repair and senescence / lateral element / mitotic G2/M transition checkpoint / XY body / Impaired BRCA2 binding to PALB2 / RNA polymerase binding / protein K6-linked ubiquitination / DNA damage tolerance / regulation of DNA damage checkpoint / negative regulation of gene expression via chromosomal CpG island methylation / HDR through Single Strand Annealing (SSA) / response to ionizing radiation / Homologous DNA Pairing and Strand Exchange / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / mitotic G2 DNA damage checkpoint signaling / Resolution of D-loop Structures through Holliday Junction Intermediates / Transcriptional Regulation by E2F6 / negative regulation of cell cycle / negative regulation of reactive oxygen species metabolic process / Impaired BRCA2 binding to RAD51 / positive regulation of vascular endothelial growth factor production / negative regulation of extrinsic apoptotic signaling pathway via death domain receptors / Presynaptic phase of homologous DNA pairing and strand exchange / ubiquitin ligase complex / SUMOylation of DNA damage response and repair proteins / protein autoubiquitination / regulation of DNA repair / Activation of gene expression by SREBF (SREBP) / Meiotic synapsis / positive regulation of DNA repair / cellular response to ionizing radiation / TP53 Regulates Transcription of DNA Repair Genes / chromosome segregation / Nonhomologous End-Joining (NHEJ) / cellular response to tumor necrosis factor / tubulin binding / negative regulation of cell growth / intrinsic apoptotic signaling pathway in response to DNA damage / RING-type E3 ubiquitin transferase / double-strand break repair via homologous recombination / G2/M DNA damage checkpoint / Meiotic recombination / HDR through Homologous Recombination (HRR) / fatty acid biosynthetic process / positive regulation of angiogenesis / Metalloprotease DUBs / ubiquitin-protein transferase activity / p53 binding / KEAP1-NFE2L2 pathway / double-strand break repair / chromosome / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / Neddylation / Processing of DNA double-strand break ends / Regulation of TP53 Activity through Phosphorylation / damaged DNA binding / protein homotetramerization / nuclear body / transcription coactivator activity / regulation of cell cycle / transcription cis-regulatory region binding / protein ubiquitination / chromatin remodeling / ribonucleoprotein complex / negative regulation of DNA-templated transcription / DNA repair / positive regulation of gene expression / ubiquitin protein ligase binding / regulation of transcription by RNA polymerase II / DNA damage response / positive regulation of DNA-templated transcription / enzyme binding Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 5.9 Å | ||||||||||||
Authors | Hunkeler, M. / Hagmann, A. / Stuttfeld, E. / Chami, M. / Stahlberg, H. / Maier, T. | ||||||||||||
| Funding support | Switzerland, 3items
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Citation | Journal: Nature / Year: 2018Title: Structural basis for regulation of human acetyl-CoA carboxylase. Authors: Moritz Hunkeler / Anna Hagmann / Edward Stuttfeld / Mohamed Chami / Yakir Guri / Henning Stahlberg / Timm Maier / ![]() Abstract: Acetyl-CoA carboxylase catalyses the ATP-dependent carboxylation of acetyl-CoA, a rate-limiting step in fatty acid biosynthesis. Eukaryotic acetyl-CoA carboxylases are large, homodimeric multienzymes. ...Acetyl-CoA carboxylase catalyses the ATP-dependent carboxylation of acetyl-CoA, a rate-limiting step in fatty acid biosynthesis. Eukaryotic acetyl-CoA carboxylases are large, homodimeric multienzymes. Human acetyl-CoA carboxylase occurs in two isoforms: the metabolic, cytosolic ACC1, and ACC2, which is anchored to the outer mitochondrial membrane and controls fatty acid β-oxidation. ACC1 is regulated by a complex interplay of phosphorylation, binding of allosteric regulators and protein-protein interactions, which is further linked to filament formation. These filaments were discovered in vitro and in vivo 50 years ago, but the structural basis of ACC1 polymerization and regulation remains unknown. Here, we identify distinct activated and inhibited ACC1 filament forms. We obtained cryo-electron microscopy structures of an activated filament that is allosterically induced by citrate (ACC-citrate), and an inactivated filament form that results from binding of the BRCT domains of the breast cancer type 1 susceptibility protein (BRCA1). While non-polymeric ACC1 is highly dynamic, filament formation locks ACC1 into different catalytically competent or incompetent conformational states. This unique mechanism of enzyme regulation via large-scale conformational changes observed in ACC1 has potential uses in engineering of switchable biosynthetic systems. Dissecting the regulation of acetyl-CoA carboxylase opens new paths towards counteracting upregulation of fatty acid biosynthesis in disease. | ||||||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6g2i.cif.gz | 5.9 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6g2i.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 6g2i.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/g2/6g2i ftp://data.pdbj.org/pub/pdb/validation_reports/g2/6g2i | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 4344MC ![]() 4342C ![]() 4343C ![]() 6g2dC ![]() 6g2hC C: citing same article ( M: map data used to model this data |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: Protein | Mass: 265949.344 Da / Num. of mol.: 10 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: ACACA, ACAC, ACC1, ACCA / Production host: ![]() References: UniProt: Q13085, acetyl-CoA carboxylase, biotin carboxylase #2: Protein | Mass: 27664.869 Da / Num. of mol.: 8 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: BRCA1, RNF53 / Production host: ![]() References: UniProt: P38398, RING-type E3 ubiquitin transferase Has protein modification | Y | |
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-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: FILAMENT / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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| Buffer solution | pH: 8 | ||||||||||||||||||||||||
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 1 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) Details: Collected in movie-mode with total dose of 80 e-/A2 for a total of 80 frames. Frames 3-22 were used for final reconstruction |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| Symmetry | Point symmetry: C2 (2 fold cyclic) | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 5.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 48483 / Symmetry type: POINT | ||||||||||||||||||||||||
| Refinement | Stereochemistry target values: GeoStd + Monomer Library | ||||||||||||||||||||||||
| Refine LS restraints |
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About Yorodumi



Homo sapiens (human)
Switzerland, 3items
Citation
UCSF Chimera









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