2026-07-01 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY RCSB RCSB 2025-12-31 2026-07-01 2026-07-01 2026-07-01 Australian Research Council (ARC) DP230101045 Australia National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R35GM133325 United States National Science Foundation (NSF, United States) 2342136 United States Quasibacillus thermotolerans T=3 encapsulin pore mutant variant Letter11 Andreas MP Siddiquee R Giessen TW Lau YH encapsulin, protein nanocompartment, VIRUS LIKE PARTICLE Siddiquee R Lie F Szyszka TN Loustau A Andreas MP Giessen TW Lau YH Directed evolution of multimeric proteins is enabled by dual-compensatory gene duplication. Biorxiv US 2026 41648261 doi:10.64898/2026.01.12.698938 2692-8205 9zw4 FULLOVERLAP EMDB EMD-74905 associated EM volume
Quasibacillus thermotolerans T=3 encapsulin pore mutant variant Letter11
 Quasibacillus thermotolerans T=3 encapsulin pore mutant variant Letter11 Quasibacillus thermotolerans T=3 encapsulin pore mutant variant Letter11 0 1 Bacillus thermotolerans Type 1 encapsulin shell protein Bacillus thermotolerans 0.030542478999999997 3 Escherichia coli BL21(DE3) LEVO MNKSQLYPDSPLTDQDFNQLDQTVIEAARRQLVGRRFIELYGPLGRGMQSVFNDIFMESHEAKMDFQGSFDTEVESSRRV NYTIPMLYKDFVLYWRDLEQSKALDIPIDFSVAANAARDVAFLEDQMIFHGSKEFDIPGLMNVKGRLTHLIGNWYESGNA FQDIVEARNKLLEMNHNGPYALVLSPELYSLLGSGGSGLITAGVFQSPVLKGKSGVIVNTGRNNLDLAISEDFETAYLGE EGMNHPFRVYETVVLRIKRPAAICTLIDPEE A0A0F5HPP7 A0A0F5HPP7 singleParticle particle 4.5 8.0 200.0 NaCl sodium chloride 25.0 C4H11NO3 Tris 1.0 C9H15O6P TCEP
200 mM NaCl, 25 mM Tris pH 8.0, 1 mM TCEP
 Quantifoil R2/1 COPPER 200 CARBON HOLEY GLOW DISCHARGE AIR
The grid was glow discharged at 5 mA for 60 seconds under vacuum.
 ETHANE 100 295 FEI VITROBOT MARK IV TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 0.8 1.2 GATAN K3 BIOQUANTUM (6k x 4k) 1 1565 51.5 1 68033 cryoSPARC 4.7.1 CTF estimation was performed using patch CTF estimation in cryoSPARC Live. PHASE FLIPPING AND AMPLITUDE CORRECTION Starting model was generated using Ab-initio reconstruction with I symmetry. I 2.42 FSC 0.143 CUT-OFF cryoSPARC 4.7.1 Homogeneous Refinement
The final map was generated using homogeneous refinement against the ab-initio map with I symmetry imposed, per-particle defocus optimization, per-group CTF parameterization, spherical aberration fitting enabled, tetrafoil fitting enabled, anisotropic magnification fitting enabled, and Ewald sphere correcting enabled with a negative curvature sign.
18327 MAXIMUM LIKELIHOOD cryoSPARC 4.7.1 Ab-initio reconstruction MAXIMUM LIKELIHOOD cryoSPARC 4.7.1 Homogeneous refinement emd_74905.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 480 480 480 0 0 0 480 480 480 570.456 570.456 570.456 90.0 90.0 90.0 X Y Z -2.0322876 3.6813648 0.008179757 0.17109717 1.18845 1.18845 1.18845 0.51 AUTHOR AlphaFold in silico model FLEXIBLE FIT
A starting model of a single protomer was generated using AlphaFold 3, and individual protomers were fit into the volume of an asymmetric unit using UCSF ChimeraX v 1.8. The model containing a single asymmetric unit consisting of three protomers was then manually refined using Coot v 0.9.8.1, followed by real-space refinement in PHENIX v 1.20.1-4487-000. Non-crystallographic symmetry (NCS) operators were then applied to generate a complete NCS-expanded shell, which was refined against the map using PHENIX real-space refinement.
cross-correlation coefficient REAL 71.200000000000003 emd_74905_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 480 480 480 0 0 0 480 480 480 570.456 570.456 570.456 90.0 90.0 90.0 X Y Z -0.40733182 1.4109819 0.0048339996 0.09591422 1.18845 1.18845 1.18845 AUTHOR emd_74905_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 480 480 480 0 0 0 480 480 480 570.456 570.456 570.456 90.0 90.0 90.0 X Y Z -0.66207755 1.4578017 0.004850476 0.09598288 1.18845 1.18845 1.18845 AUTHOR