2024-10-16 REL PDBe PDBe PDBe 2023-08-22 2024-06-12 2024-06-12 2024-10-16 Medical Research Council (MRC, United Kingdom) MR/P010393/1 United Kingdom Leverhulme Trust RPG-2015-090 United Kingdom Cryo-EM structure of Cx26 gap junction K125E mutant in bicarbonate buffer (classification on hemichannel) Brotherton DH Savva CG Cameron AD Gap junction Large Pore Channel Carbon dioxide sensitive, MEMBRANE PROTEIN Brotherton DH Nijjar S Savva CG Dale N Cameron AD Structures of wild-type and a constitutively closed mutant of connexin26 shed light on channel regulation by CO 2. Elife US 13 2024 38829031 doi:10.7554/eLife.93686 2050-084X Brotherton DH Nijjar S Savva CG Dale N Cameron AD Structures of wild-type and a constitutively closed mutant of connexin26 shed light on channel regulation by CO2 Elife US 13:RP93686 2024 doi:10.1101/2023.08.22.554292 2050-084X 8q9z FULLOVERLAP Connexin 26 K125E in 90mmHg PCO2, pH7.4 Connexin 26 K125E in 90mmHg PCO2, pH7.4 0 1 Homo sapiens Gap junction beta-2 protein Homo sapiens 0.026713607
Connexin 26 subunit
12 Spodoptera frugiperda LEVO MDWGTLQTILGGVNKHSTSIGKIWLTVLFIFRIMILVVAAKEVWGDEQADFVCNTLQPGCKNVCYDHYFPISHIRLWALQ LIFVSTPALLVAMHVAYRRHEKKRKFIKGEIKSEFKDIEEIKTQEVRIEGSLWWTYTSSIFFRVIFEAAFMYVFYVMYDG FSMQRLVKCNAWPCPNTVDCFVSRPTEKTVFTVFMIAVSGICILLNVTELCYLLIRYCSGKSKKPVLVPR P29033 DODECYL-BETA-D-MALTOSIDE 0.000510615 30 LMT PHOSPHATIDYLETHANOLAMINE 0.0007340389999999999 18 PTY water 1.8015e-05 348 HOH singleParticle particle 3 7.4 70.0 NaCl sodium chloride 5.0 C3H8O3 glycerol 1.0 C4H10O2S2 DTT 0.03 C2H46O11 DDM 80.0 NaH2P04 sodium hydorgen carbonate 3.0 KCl potassium chloride 1.0 MgSO4 magnesium sulphate 4.0 MgCl2 magnesium chloride
The buffer, except DDM and DTT, was prepared fresh from 10x stock on day of used. The basal buffer was filtered and degassed and DDM and DTT added. The buffer was pH corrected at point of use to pH 7.4 using 15% CO2 in 85% N2.
 Quantifoil R0.6/1 GOLD 300 GLOW DISCHARGE ETHANE-PROPANE LEICA EM GP
3 microlitres protein applied to grid, blot time 7 seconds, in 15% CO2/85%N2 atmosphere.
FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.7 0.8 2.0 105000.0 FEI TITAN KRIOS AUTOGRID HOLDER GIF Bioquantum GATAN K3 (6k x 4k) 4731 3.0 41.0 1 1104398 C6 2.4 FSC 0.143 CUT-OFF RELION 3.1 beta 161625 PROJECTION MATCHING PROJECTION MATCHING emd_18290.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 436 436 436 0 0 0 436 436 436 370.6 370.6 370.6 90.0 90.0 90.0 Z Y X -0.044492222 0.0873251 -0.00021580812 0.0014171426 0.85 0.85 0.85 0.0065 AUTHOR Full map locally sharpened in phenix; classification and masked refinement over A-F hemichannel 7QEQ PDB experimental model REAL emd_18290_msk_1.map emd_18290_additional_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 436 436 436 0 0 0 436 436 436 370.6 370.6 370.6 90.0 90.0 90.0 Z Y X -0.044492222 0.0873251 -0.00021580812 0.0014171426 0.85 0.85 0.85 AUTHOR Full map unsharpened ; classification and masked refinement over A-F hemichannel emd_18290_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 436 436 436 0 0 0 436 436 436 370.6 370.6 370.6 90.0 90.0 90.0 X Y Z -0.01652602 0.04674511 -0.000020083357 0.0012157203 0.85 0.85 0.85 AUTHOR Half map locally sharpened in phenix; classification and masked refinement over A-F hemichannel emd_18290_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 436 436 436 0 0 0 436 436 436 370.6 370.6 370.6 90.0 90.0 90.0 X Y Z -0.016013317 0.046305314 -0.00001961507 0.001217795 0.85 0.85 0.85 AUTHOR Half map locally sharpened in phenix; classification and masked refinement over A-F hemichannel