REL RCSB RCSB RCSB 2012-07-11 2012-08-08 2013-06-12 2015-10-07 Molecular Architecture of the Unliganded Membrane-Bound HIV-1 Envelope Glycoprotein Trimer Mao Y Wang L Sodroski J HIV, envelope spike, trimer, membrane glycoprotein Mao Y Wang L Gu C Herschhorn A Desormeaux A Finzi A Xiang SH Sodroski JG Molecular architecture of the uncleaved HIV-1 envelope glycoprotein trimer. PROC.NAT.ACAD.SCI.USA 110 12438 12443 2013 23757493 doi:10.1073/pnas.1307382110 http://dx.doi.org/10.6019/EMPIAR-10003 HIV-1 envelope glycoprotein trimer HIV-1 envelope glycoprotein trimer
The sample was monodisperse and solubilized in Cymal-6.
three gp120 exterior subunits and three gp41 transmembrane subunits 3 0.44 0.435 Sedimentation, gel electrophoresis HIV-1 envelope glycoprotein trimer precursor Human immunodeficiency virus 1 HIV-1 0.44 0.435
The glycoprotein was expressed in 293F cells and was purified from the extracted plasma membranes. The cDNA sequence is derived from HIV-1 JR-FL isolate.
trimer true Homo sapiens pcDNA3.1 in 293F cell line singleParticle particle 2.5 7.4
20 mM Tris-HCl, 300 mM NaCl and 0.01% Cymal-6
200 mesh and 400 mesh C-flat grid with thin holey carbon support
 ETHANE 100 93 FEI VITROBOT MARK IV Held for 2 s, blotted by filter papers for 2 s before plunging. FEI TECNAI F20 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 2 0.2 2.0 150000.0 200835.0 GATAN LIQUID NITROGEN 89 93 91 2009-09-01 GENERIC GATAN (4k x 4k) 5991 10 CT3500
Wiener filter
 OTHER 6.0 FSC 0.5 CUT-OFF SPIDER
The final map was deconvoluted and amplitude-corrected with a B-factor of 250 and was low-pass filtered at 5.6 Angstrom with a cosine edge of 8-Fourier-pixel width. The final resolution of the refined cryo-EM map, measured by FSC-0.5 cutoff, is 6 Angstrom without masking of the background noise in the map and is 5.66 Angstrom with of masking the background noise.
582914
0.5 degree of angular step
 emd_5447.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 191.20128 191.20128 191.20128 90.0 90.0 90.0 X Y Z -0.05022446 0.07631132 -0.00001735 0.00299701 0.74688 0.74688 0.74688 0.007 AUTHOR Reconstruction of the unliganded HIV-1 envelope glycoprotein trimer
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 3JWD G FLEXIBLE FIT O, Coot, CNS, Chimera, Modeller
Protocol: Flexible fitting
REAL