REL PDBe PDBe PDBe 2014-07-07 2014-07-23 2014-07-23 2014-08-27 Cryo-EM structure of the CTP synthetase filament Kollman JM Charles EJ Hansen JM nucleotide biosynthesis, enzyme polymerization, enzyme regulation, CTP, UTP, ATP Barry RM Bitbol A-F Lorestani A Charles EJ Habrian CH Hansen JM Li H-J Baldwin EP Wingreen NS Kollman JM Gitai Z Large-scale filament formation inhibits the activity of CTP synthetase elife 3 e03638 e03638 2014 25030911 doi:10.7554/eLife.03638 CTP synthetase filament CTP synthetase filament
Filament assembled from CTP synthetase incubated with substrates.
helical polymer of CTP synthetase homotetramers 1 CTP synthetase Escherichia coli cytoplasm 0.056
CtpS was incubated in the presence of substrates, and filament form as the product CTP builds up in the reaction
4 2-2-2 tetramer true Escherichia coli BL21(DE3) helical filament 0.85 7.8
50mM Tris pH 7.8, 10 mM MgCl2, 1mM UTP, 1mM ATP, 0.2 mM GTP, 5 mM glutamine
200 mesh carbon grid with Quantifoil 2/2 support
 ETHANE 100 FEI VITROBOT MARK IV 3-6s blot time before plubging FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 2.7 1.0 3.5 94000.0 94000.0 FEI TITAN KRIOS AUTOGRID HOLDER Objective astigmatism corrected at 150,000x mag 2012-11-01 GATAN ULTRASCAN 4000 (4k x 4k) 3000 25
Particle alignment, 3-D reconstruction, and helical and local point group symmetrization were carried out in SPIDER, and hsearch_lorentz was used for helical symmetry parameter searches.
79.4 48.3 C2 OTHER 8.4 OTHER SPIDER, hsearch_lorentz, EMAN1, ctffind
per micrograph
 emd_2700.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 240 240 240 -120 -120 -120 240 240 240 393.6 393.6 393.6 90.0 90.0 90.0 X Y Z -2.38333011 3.16936803 -0.0128391 0.25320092 1.64 1.64 1.64 0.53 AUTHOR reconstruction of CTP synthetase filament
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 2AD5 A RIGID BODY FIT Chimera
Domains were fit independently using Chimera
REAL