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- PDB-6pdt: cryoEM structure of yeast glucokinase filament -

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Basic information

Entry
Database: PDB / ID: 6pdt
TitlecryoEM structure of yeast glucokinase filament
ComponentsGlucokinase-1
KeywordsTRANSFERASE / filament
Function / homology
Function and homology information


Regulation of Glucokinase by Glucokinase Regulatory Protein / glucokinase / Glycolysis / fructokinase activity / carbohydrate phosphorylation / glucokinase activity / mannose metabolic process / glucose 6-phosphate metabolic process / glucose binding / glucose import ...Regulation of Glucokinase by Glucokinase Regulatory Protein / glucokinase / Glycolysis / fructokinase activity / carbohydrate phosphorylation / glucokinase activity / mannose metabolic process / glucose 6-phosphate metabolic process / glucose binding / glucose import / intracellular glucose homeostasis / Neutrophil degranulation / glycolytic process / glucose metabolic process / mitochondrion / ATP binding / plasma membrane / cytosol
Similarity search - Function
Hexokinase; domain 1 / Hexokinase; domain 1 - #20 / Hexokinase / Hexokinase, binding site / Hexokinase, N-terminal / Hexokinase, C-terminal / Hexokinase / Hexokinase / Hexokinase domain signature. / Hexokinase domain profile. ...Hexokinase; domain 1 / Hexokinase; domain 1 - #20 / Hexokinase / Hexokinase, binding site / Hexokinase, N-terminal / Hexokinase, C-terminal / Hexokinase / Hexokinase / Hexokinase domain signature. / Hexokinase domain profile. / ATPase, nucleotide binding domain / ATPase, nucleotide binding domain / Nucleotidyltransferase; domain 5 / 2-Layer Sandwich / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
ADENOSINE-5'-TRIPHOSPHATE / alpha-D-glucopyranose / Glucokinase-1
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.8 Å
Model detailsMODEL GENERATED BY ROSETTA VERSION 2019.21.post.dev+31.master.d8f9b4a90a8
AuthorsLynch, E.M. / Dosey, A.M. / Farrell, D.P. / Stoddard, P.R. / Kollman, J.M.
CitationJournal: Science / Year: 2020
Title: Polymerization in the actin ATPase clan regulates hexokinase activity in yeast.
Authors: Patrick R Stoddard / Eric M Lynch / Daniel P Farrell / Annie M Dosey / Frank DiMaio / Tom A Williams / Justin M Kollman / Andrew W Murray / Ethan C Garner /
Abstract: The actin fold is found in cytoskeletal polymers, chaperones, and various metabolic enzymes. Many actin-fold proteins, such as the carbohydrate kinases, do not polymerize. We found that Glk1, a ...The actin fold is found in cytoskeletal polymers, chaperones, and various metabolic enzymes. Many actin-fold proteins, such as the carbohydrate kinases, do not polymerize. We found that Glk1, a glucokinase, forms two-stranded filaments with ultrastructure that is distinct from that of cytoskeletal polymers. In cells, Glk1 polymerized upon sugar addition and depolymerized upon sugar withdrawal. Polymerization inhibits enzymatic activity; the Glk1 monomer-polymer equilibrium sets a maximum rate of glucose phosphorylation regardless of Glk1 concentration. A mutation that eliminated Glk1 polymerization alleviated concentration-dependent enzyme inhibition. Yeast containing nonpolymerizing Glk1 were less fit when growing on sugars and more likely to die when refed glucose. Glk1 polymerization arose independently from other actin-related filaments and may allow yeast to rapidly modulate glucokinase activity as nutrient availability changes.
History
DepositionJun 19, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 11, 2020Provider: repository / Type: Initial release
Revision 1.1Jul 29, 2020Group: Data collection / Derived calculations / Structure summary
Category: chem_comp / entity ...chem_comp / entity / pdbx_chem_comp_identifier / pdbx_entity_nonpoly / struct_conn / struct_site / struct_site_gen
Item: _chem_comp.name / _entity.pdbx_description ..._chem_comp.name / _entity.pdbx_description / _pdbx_entity_nonpoly.name / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation

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Structure visualization

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Assembly

Deposited unit
A: Glucokinase-1
B: Glucokinase-1
C: Glucokinase-1
D: Glucokinase-1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)224,63216
Polymers221,7854
Non-polymers2,84712
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area14770 Å2
ΔGint-51 kcal/mol
Surface area74660 Å2

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Components

#1: Protein
Glucokinase-1 / / Glucose kinase 1 / GLK-1


Mass: 55446.258 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (yeast)
Strain: ATCC 204508 / S288c / Gene: GLK1, HOR3, YCL040W, YCL312, YCL40W / Production host: Escherichia coli (E. coli) / References: UniProt: P17709, glucokinase
#2: Sugar
ChemComp-GLC / alpha-D-glucopyranose / Glucose


Type: D-saccharide, alpha linking / Mass: 180.156 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Formula: C6H12O6
IdentifierTypeProgram
DGlcpaCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
a-D-glucopyranoseCOMMON NAMEGMML 1.0
a-D-GlcpIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#3: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg
#4: Chemical
ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE / Adenosine triphosphate


Mass: 507.181 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Comment: ATP, energy-carrying molecule*YM
Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: FILAMENT / 3D reconstruction method: helical reconstruction

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Sample preparation

ComponentName: glucokinase-1 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE / Humidity: 100 %

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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
Image recordingElectron dose: 90 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM software
IDNameCategory
2Leginonimage acquisition
4GctfCTF correction
7Rosettamodel fitting
9cryoSPARCinitial Euler assignment
10RELIONfinal Euler assignment
11cryoSPARCclassification
12RELION3D reconstruction
13Rosettamodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: 120.4 ° / Axial rise/subunit: 60.1 Å / Axial symmetry: D1
3D reconstructionResolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 56778 / Symmetry type: HELICAL

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