REL PDBe PDBe PDBe 2016-03-17 2016-04-13 2016-05-18 2016-05-18 Cryo-electron microscopy structure of the star-shaped, hubless post-attachment T4 baseplate Taylor NMI Guerrero-Ferreira RC Goldie KN Stahlberg H Leiman PG T4, baseplate, post-attachment, bacteriophage, bacterial virus, star-shaped, hubless, membrane-piercing, cell attachment, infection Taylor NMI Prokhorov NS Guerrero-Ferreira RC Shneider MM Browning C Goldie KN Stahlberg H Leiman PG Atomic structure of bacteriophage T4 baseplate and its function in triggering sheath contraction NATURE 2016 doi:10.1038/nature17971 Star-shaped, hubless post-attachment T4 baseplate Star-shaped, hubless post-attachment T4 baseplate
In addition to hexagonal pre-attachment baseplate-tail tube complexes, the sample also contained some star-shaped, hubless post-attachment baseplates. The current reconstruction is the reconstruction of those post-attachment, star-shaped baseplates, which have the following oligomeric state: (gp6)12(gp7)6(gp8)12(gp9)18(gp10)18(gp11)18(gp12)18(gp25)6(gp53)6. This oligomeric state has an approximate theoretical MW of 5.5 MDa.
(gp6)12(gp7)6(gp8)12(gp9)18(gp10)18(gp11)18(gp12)18(gp25)6(gp53)6 1 5.5 Star-shaped, hubless post-attachment T4 baseplate Enterobacteria phage T4 am18/am23 mutant 8.7 1 false singleParticle particle 1 8.0
50 mM Tris-HCl pH 8.0, 100 mM NaCl, 8 mM MgSO4
Quantifoil 300 mesh carbon-coated copper grids glow-discharged for 20 seconds
 ETHANE 100 FEI VITROBOT MARK IV Applied 3.5 ul of sample and blotting 3 seconds before plunging FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.7 0.5 4.0 105000.0 37700.0 FEI TITAN KRIOS AUTOGRID HOLDER 80 The astigmatism was corrected at high magnification Quantum-LS Gatan Image Filter 0.0 20.0 2015-05-07 GATAN K2 SUMMIT (4k x 4k) 1621 60
Individual frames were aligned with 2dx_automator. 40 frames were recorded in total, and the 2 first frames were discarded.
32.
The particles were selected with e2boxer.py.
Each particle
 C6 OTHER 6.77 OTHER RELION
The short tail fibers (gp12 trimers) appear more flexible, and no special effort was made to reconstruct them. They were partly masked out by the circular mask.The total mass of the reconstructed volume was approximately 4.5 MDa.
5176 emd_3396.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 480 480 480 0 0 0 480 480 480 636.48 636.48 636.48 90.0 90.0 90.0 X Y Z -0.00931757 0.03741582 0.00031558 0.00200508 1.326 1.326 1.326 0.0095 AUTHOR Cryo-electron microscopy structure of the star-shaped, hubless post-attachment T4 baseplate. Postprocessed with Relion, using automated B-factor estimation and the mask used for polishing, which was generated previously by auto-masking with an initial binarization threshold of 0.015.
::::EMDATABANK.org::::EMD-3396::::
emd_3396.png
emd_3396_fsc.xml