2026-05-13 REL PDBe INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY PDBe PDBe 2025-07-26 2026-04-01 2026-04-01 2026-05-13 Foundation for Science and Technology (FCT) PhD fellowship (DFA/BD/8167/2020) Portugal Foundation for Science and Technology (FCT) Research Unit UID/04462: iNOVA4Health - Programme in Translational Medicine Portugal Foundation for Science and Technology (FCT) Associate Laboratory LS4FUTURE (LA/P/0087/2020) Portugal RVFV Gn-Ferritin Nanoparticle Rodrigues MQ Ferritin, Nanoparticle, Rift Valley fever virus, Gn membrane glycoprotein, VIRAL PROTEIN Rodrigues MQ Cardoso I Duarte N Alves PM Roldao A Ferritin nanoparticles displaying rift valley fever virus glycoprotein elicit potent dendritic cell activation in vitro. Virol J US 23 2026 41864987 doi:10.1186/s12985-026-03130-4 1743-422X EMDB EMD-54561 associated EM volume Rift Valley fever virus Gn membrane glycoprotein fused to bullfrog-H. pylori ferritin nanoparticle Rift Valley fever virus Gn membrane glycoprotein fused to bullfrog-H. pylori ferritin nanoparticle 0 1 2
Histidine tag followed by Rift Valley fever virus membrane glycoprotein Gn head domain sequence (res. 154-467, UniProt ID: P03518, with point mutations E276G, L329, and I444V), followed by a GS-linker (GGGGSGGGGS), and finally the bullfrog-Helicobacter pylori ferritin hybrid, composed of bullfrog (Rana catesbeiana) ferritin lower subunit (res. 2-9, PDB ID: 1RCC, with a point mutation N8Q) and H. pylori ferritin (res. 3-167, PDB ID: 3BVE, with point mutations I7E and N19Q). RVFV Gn-ferritin nanoparticles self assemble into 24-mer nanoparticles after recombinant expression of monomeric parts.
Rift Valley fever virus 1.4 Rift Valley fever virus Gn membrane glycoprotein Rift Valley fever virus
Histidine tag followed by Rift Valley fever virus membrane glycoprotein Gn head domain sequence (res. 154-467, UniProt ID: P03518, with point mutations E276G, L329, and I444V), followed by a GS-linker (GGGGSGGGGS), and finally the bullfrog-Helicobacter pylori ferritin hybrid, composed of bullfrog (Rana catesbeiana) ferritin lower subunit (res. 2-9, PDB ID: 1RCC, with a point mutation N8Q) and H. pylori ferritin (res. 3-167, PDB ID: 3BVE, with point mutations I7E and N19Q)
HHHHHHEDPHLRNRPGKGHNYIDGMTQEDATCKPVTYAGACSSFDVLLEKGKFPLFQSYAHHRTLLEAVHDTIIAKADPPSCDLQSAHGNPCMKEKLVMKTHCPNDYQSAHYLNNDGKMASVKCPPKYELTEDCNFCRQMTGASLKKGSYPLQDLFCQSSEDDGSKLKTKMKGVCEVGVQALKKCDGQLSTAHEVVPFAVFKNSKKVYLDKLDLKTEENLLPDSFVCFEHKGQYKGTMDSGQTKRELKSFDISQCPKIGGHGSKKCTGDAAFCSAYECTAQYANAYCSHANGSGVVQIQVSGVWKKPLCVGYERVVVKREGGGGSGGGGSESQVRQQFSKDIEKLLNEQVNKEMQSSNLYMSMSSWCYTHSLDGAGLFLFDHAAEEYEHAKKLIIFLNENNVPVQLTSISAPEHKFEGLTQIFQKAYEHEQHISESINNIVDHAIKSKDHATFNFLQWYVAEQHEEEVLFKDILDKIELIGNENHGLYLADQYVKGIAKSRKS P03518 other Spodoptera frugiperda Helicobacter pylori ferritin Helicobacter pylori
Histidine tag followed by Rift Valley fever virus membrane glycoprotein Gn head domain sequence (res. 154-467, UniProt ID: P03518, with point mutations E276G, L329, and I444V), followed by a GS-linker (GGGGSGGGGS), and finally the bullfrog-Helicobacter pylori ferritin hybrid, composed of bullfrog (Rana catesbeiana) ferritin lower subunit (res. 2-9, PDB ID: 1RCC, with a point mutation N8Q) and H. pylori ferritin (res. 3-167, PDB ID: 3BVE, with point mutations I7E and N19Q)
HHHHHHEDPHLRNRPGKGHNYIDGMTQEDATCKPVTYAGACSSFDVLLEKGKFPLFQSYAHHRTLLEAVHDTIIAKADPPSCDLQSAHGNPCMKEKLVMKTHCPNDYQSAHYLNNDGKMASVKCPPKYELTEDCNFCRQMTGASLKKGSYPLQDLFCQSSEDDGSKLKTKMKGVCEVGVQALKKCDGQLSTAHEVVPFAVFKNSKKVYLDKLDLKTEENLLPDSFVCFEHKGQYKGTMDSGQTKRELKSFDISQCPKIGGHGSKKCTGDAAFCSAYECTAQYANAYCSHANGSGVVQIQVSGVWKKPLCVGYERVVVKREGGGGSGGGGSESQVRQQFSKDIEKLLNEQVNKEMQSSNLYMSMSSWCYTHSLDGAGLFLFDHAAEEYEHAKKLIIFLNENNVPVQLTSISAPEHKFEGLTQIFQKAYEHEQHISESINNIVDHAIKSKDHATFNFLQWYVAEQHEEEVLFKDILDKIELIGNENHGLYLADQYVKGIAKSRKS P52093 other Spodoptera frugiperda singleParticle twoDArray 1 7.5 20.0 C4H11NO3 Tris 150.0 NaCl Sodium chloride Quantifoil R1.2/1.3 COPPER 300 PLASMA CLEANING
Quantifoil R1.2/1.3 Cu 300-mesh grids were rendered hydrophilic using a Fischione 1020 plasma cleaner for 4 s.
 ETHANE 100 277 FEI VITROBOT MARK IV
Quantifoil R1.2/1.3 Cu 300-mesh grids were rendered hydrophilic using a Fischione 1020 plasma cleaner for 4 s. A sample at a concentration of 1 mg/mL was vitrified using a Vitrobot Mark IV by applying 3.5 uL onto the freshly plasma-cleaned grid under controlled conditions (4C, 100% humidity, blot force 2, blot time 2.5-4 s) before being plunge-frozen in liquid ethane..
TFS GLACIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 2.7 1.0 3.0 FEI FALCON IV (4k x 4k) 1 4534 60.0
Image acquisition was performed with EPU 3.6; each image was composed of 40 individual frames using a pixel size of 1.191 A and a total exposure dose of 60 e/A^2. A total of 4,534 movie stacks were acquired.
 1
The grids were then clipped and loaded into a Glacios 200 kV microscope and imaged using a Falcon 4i camera in EER format, with a dose rate of approximately 6 e/pixel/s. Image acquisition was performed with EPU 3.6; each image was composed of 40 individual frames using a pixel size of 1.191 A and a total exposure dose of 60 e/A^2
616911
305 particles were manually picked from eight micrographs and subjected to 2D classification. Selected classes were subsequently used as templates to extract a total of 616,911 particles from 4,534 movies.
 cryoSPARC 4.6
All movie stacks were imported into CryoSPARC v4.6.0 for image processing. Following motion correction and contrast transfer function (CTF) estimation, 305 particles were manually picked from eight micrographs and subjected to 2D classification. Selected classes were subsequently used as templates to extract a total of 616,911 particles from 4,534 movies.
PHASE FLIPPING AND AMPLITUDE CORRECTION
Four iterative rounds of 2D classification were performed, resulting in a final set of 47,705 particles, which were used for ab initio reconstruction with octahedral symmetry to generate the initial model. A single round of 3D classification was then carried out, from which the most populated class, comprising 11,551 particles, was selected for further 3D refinement under octahedral symmetry.
 1 5.76 FSC 0.143 CUT-OFF cryoSPARC 4.6 11551 NOT APPLICABLE NOT APPLICABLE 5 10000.0 cryoSPARC 4.6 emd_54561.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 440 440 440 0 0 0 440 440 440 524.04 524.04 524.04 90.0 90.0 90.0 X Y Z -0.017098393 0.031182222 0.0010808614 0.0045385873 1.191 1.191 1.191 0.00172 AUTHOR emd_54561_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 440 440 440 0 0 0 440 440 440 524.04 524.04 524.04 90.0 90.0 90.0 X Y Z -0.07001999 0.19207962 0.0004212478 0.00918105 1.191 1.191 1.191 AUTHOR emd_54561_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 440 440 440 0 0 0 440 440 440 524.04 524.04 524.04 90.0 90.0 90.0 X Y Z -0.063391045 0.107284285 0.00041613335 0.009113338 1.191 1.191 1.191 AUTHOR