REL PDBe PDBe PDBe 2012-07-24 2012-10-03 2013-08-14 2013-08-21 Structure of bacteriophage phi29 prohead particle with a double insertion mutation (U92,U93) in the pRNA Zhao W Saha M Ke A Morais MC Jardine PJ Grimes S bacteriophage, bacteriophage phi29, phi29, pRNA, DNA packaging Zhao W Saha M Ke A Morais MC Jardine PJ Grimes S A three-helix junction is the interface between two functional domains of prohead RNA in 29 DNA packaging. J.VIROL. 86 11625 11632 2012 22896620 doi:10.1128/JVI.01370-12 Bacteriophage phi29 prohead particle with a double insertion mutation (U92,U93) in the pRNA Bacteriophage phi29 prohead particle with a double insertion mutation (U92,U93) in the pRNA The prohead is derived from a prolate icosahedron with T = 3, Q = 5 quasi-symmetry wherein a pentameric capsomer at one end of the particle is replaced by a complex including a dodecameric connector protein and a pentameric pRNA 1 12.4 Computed from 255 copies of the capsid protein, 12 copies of the connector protein, and 5 copies of the pRNA Bacillus phage phi29
The phi29 prohead particle was treated with RNase to remove the WT pRNA, and then incubated with exogenously produced pRNA engineered to contain a double U92,U93 insertion mutation.
Bacillus phage phi29 Bacillus subtilis BACTERIA(EUBACTERIA) 12.4 VIRUS-LIKE PARTICLE SPECIES false true bacteriophage phi29 singleParticle particle 0.1 7.8
25 mM Tris-HCl, 5 mM MgCl2, 50 mM NaCl
Quantifoil holey carbon on top of200 mesh copper grid, plasma cleaned
 ETHANE HOMEMADE PLUNGER Blot grid from behind the sample for ~4 seconds before plunging. JEOL 2200FS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 2.0 0.64 3.0 60000.0 60000.0 GATAN LIQUID NITROGEN Objective lens astigmatism was corrected at 100,000 times magnification JEOL 2011-03-09 GATAN ULTRASCAN 4000 (4k x 4k) 109 20 Side entry liquid nitrogen-cooled cryo specimen holder
The particles were selected using the model-based automatic particle selection implemented in EMAN, followed by manual deletion of bad particles and manual selection of missed particles
Each micrograph
 C5 OTHER 17.3 FSC 0.5 CUT-OFF EMAN
C5 symmetry was imposed in all stages of the reconstruction, with the 5-fold axis along Z. The final map was low-pass filtered at 14 angstrom units
2134 emd_2162.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 300 300 300 -64 -64 -64 300 300 300 699.0 699.0 600.0 90.0 90.0 90.0 X Y Z -2.99882269 6.22740078 0.0 0.95659858 2.33 2.33 2 1.5 AUTHOR Single particle CryoEM reconstruction of a phi29 prohead particle with a double U92U93 deletion in the pRNA
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