REL RCSB RCSB RCSB 2011-04-12 2011-06-06 2011-06-06 2011-09-23 Molecular Structure of Unliganded Native CP-MAC gp120 trimer: Spike region White TA Bartesaghi A Borgnia M Subramaniam S Antigens, CD4, cryo-electron microscopy, HIV, SIV, envelope glycoprotein, gp120, gp41, HIV-1, Immunoglobulin Fab Fragments White TA Bartesaghi A Borgnia MJ Meyerson JR de la Cruz MJ Bess JW Nandwani R Hoxie JA Lifson JD Milne JL Subramaniam S Molecular architectures of trimeric SIV and HIV-1 envelope glycoproteins on intact viruses: strain-dependent variation in quaternary structure. PLOS PATHOG. 6 e1001249 e1001249 2010 21203482 doi:10.1371/journal.ppat.1001249 SIV CP-MAC virus SIV CP-MAC virus
Structures determined by cryo-electron tomography combined with 3D averaging
trimer 1 envelope glycoprotein from Simian Immunodeficiency virus CP-MAC unidentified SIV CP-MAC Simian Immunodeficiency Virus SupT1 viral membrane 0.480
Envelope glycoproteins present on the surface of intact virions.
trimer false subtomogramAveraging 7.5
TNE Buffer (10 mM Tris, 150 mM NaCl, 1 mM EDTA)
200 mesh Quantifoil Multi A
 ETHANE 100 77 FEI VITROBOT MARK III
Vitrification instrument: Mark III Vitrobot (FEI, Netherlands)
blot for 6 seconds, at 25 C, 100 percent humidity, blot offset of -2, into an ethane slurry cooled by liquid nitrogen FEI POLARA 300 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 2.5 2.5 34000.0 GATAN LIQUID NITROGEN 81 82 81 GATAN GIF 0.0 20.0
Areas were selected for proper ice thickness (about 200 nm).
2009-07-21 GENERIC GATAN 150 Cartridge -70 70
Average tomographic tilt angle increment: 1.
OTHER 20.0 FSC 0.5 CUT-OFF IMOD
Please see A. Bartesaghi, et al. Journal of Structural Biology, 2008
 emd_5274.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 100 100 100 0 0 0 100 100 100 410 410 410 90 90 90 X Y Z -5.22022 7.63792 0.0406701 0.630144 4.1 4.1 4.1 3.0 AUTHOR 3D Average of Envelope Glycoproteins from SIV CP-MAC - structure (20 Angstrom) determined by cryo-electron tomography combined with 3D averaging
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 3DNO RIGID BODY FIT UCSF Chimera
Protocol: Rigid body. Automated fitting procedures
correlation coefficient REAL