REL PDBe PDBe PDBe 2014-10-14 2014-11-19 2015-02-18 2015-08-12 Membrane bound pleurotolysin prepore (TMH2 helix lock) trapped with engineered disulphide cross-link Lukoyanova N Kondos SC Farabella I Law RHP Reboul CF Caradoc-Davies TT Spicer BA Kleifeld O Perugini M Ekkel S Hatfaludi T Oliver K Hotze EM Tweten RK Whisstock JC Topf M Dunstone MA Saibil HR MACPF/CDC superfamily, pore-forming proteins Lukoyanova N Kondos SC Farabella I Law RH Reboul CF Caradoc-Davies TT Spicer BA Kleifeld O Traore DA Ekkel SM Voskoboinik I Trapani JA Hatfaludi T Oliver K Hotze EM Tweten RK Whisstock JC Topf M Saibil HR Dunstone MA Conformational Changes during Pore Formation by the Perforin-Related Protein Pleurotolysin. PLOS BIOL. 13 e1002049 e1002049 2015 25654333 doi:10.1371/journal.pbio.1002049 4v3m FULLOVERLAP pleurotolysin prepore on liposomes (TMH2 helix lock) trapped with engineered disulphide pleurotolysin prepore on liposomes (TMH2 helix lock) trapped with engineered disulphide
13 fold symmetrical ring oligomers of 26 PlyA and 13 PlyB (C487A, Y166C,G266C variant) molecules on liposomes
2 pleurotolysin A Pleurotus ostreatus Oyster mushroom, White-rot fungus 0.017 26 true Escherichia coli BL21(DE3) Codon Plus pLysS (Novagen) pET3a Q8X1M9 GO:0019836 IPR009413 pleurotolysin B Pleurotus ostreatus Oyster mushroom, White-rot fungus 52
C487A, Y166C, G266C variant
13 true Escherichia coli BL21(DE3) Codon Plus pLysS (Novagen) pUC57, pET3a Q5W9E8 GO:0019836 IPR020864 singleParticle particle 0.02 7.4
50 mM NaCl, 20 mM Hepes
300 mesh lacey copper grids
 ETHANE 80 FEI VITROBOT MARK III Pleurotolysin A was first added to sphingomyelin/cholesterol liposomes at a molar ratio of 1:2000 protein to lipid in the above buffer. After 5 min incubation at room temperature, pleurotolysin B was added to the mixture at a molar ratio of 1:2 to pleurotolysin A. The mixture was incubated at 40 C or room temperature for 30 min after which 3.5 uL were placed on negatively glow discharged lacey grids and vitrified in liquid ethane using a Vitrobot. Blotting was carried out at 36 C and 80% humidity. FEI POLARA 300 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.3 0.7 3.7 59000.0 76148.0 GATAN HELIUM 90 102 94 Objective lens astigmatism was corrected at 115,000 times magnification 2013-01-30 GATAN ULTRASCAN 4000 (4k x 4k) 15 154 25 16. liquid nitrogen cooled
1,700 prepore side views with adjacent membrane regions were extracted from liposome images and treated as single particles. These particles were initially used to separate 12- and 13-fold symmetries by angular reconstitution followed by competitive projection matching.
Estimated with CTFFIND3, then phases flipped for each particle
 C13 OTHER 17.0 OTHER Imagic, Spider
SPIDER operation BP RP was used for reconstruction
722 emd_2795.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 200 200 200 0 0 0 200 200 200 400.0 400.0 400.0 90.0 90.0 90.0 X Y Z -0.00219296 0.00269872 0.00001793 0.00023649 2.0 2.0 2.0 0.0002 AUTHOR This TMH2 helix disulphide trap mutant (Y166C, G266C) was engineered on a background PlyB variant that lacks the wildtype cysteine (C487A) in order to avoid incorrect disulphide bond formation
::::EMDATABANK.org::::EMD-2795::::
 4OEB RIGID BODY FIT Chimera cross-correlation coefficient REAL 4OEJ FLEXIBLE FIT Chimera, Flex-EM, Modeller, TEMPy cross-correlation coefficient REAL