Structural basis of influenza A virus neutralization by broadly active single-domain antibody G2.3 recognizing glycosylated epitope within hemagglutinin stem

2026-07-01 REL PDBj INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY DATABASE_REFERENCES citation em_admin _citation.journal_volume _em_admin.last_update EXPERIMENTAL_SUMMARY citation em_admin _citation.journal_volume _em_admin.last_update PDBj PDBj 2026-03-08 2026-06-10 2026-06-10 2026-07-01 Russian Science Foundation No. 23-74-30004 Russian Federation Structural basis of influenza A virus neutralization by broadly active single-domain antibody G2.3 recognizing glycosylated epitope within hemagglutinin stem Ilyasov IO Baymukhametov TN Voronina DV Vorobiev II Khodak YA Burtseva AD Popov VO Sluchanko NN Shcheblyakov DV Boyko KM hemagglutinin, influenza A, H1N1, antibody, G2.3, cryoEM, stem domain, ANTIVIRAL PROTEIN Ilyasov IO Voronina DV Baymukhametov TN Vorobiev II Ryabova EI Derkaev AA Esmagambetov IB Shmarov MM Khodak YA Burtseva AD Sluchanko NN Boyko KM Shcheblyakov DV Gintsburg AL Popov VO Logunov DY Structural basis of influenza A virus neutralization by broadly reactive single-domain antibody G2.3 recognizing glycosylated epitope within hemagglutinin stem domain. Int.J.Biol.Macromol. UK 372 152701 152701 2026 42190777 doi:10.1016/j.ijbiomac.2026.152701 0141-8130 0708 IJBMDR Liebschner D Afonine PV Baker ML Bunkoczi G Chen VB Croll TI Hintze B Hung LW Jain S McCoy AJ Moriarty NW Oeffner RD Poon BK Prisant MG Read RJ Richardson JS Richardson DC Sammito MD Sobolev OV Stockwell DH Terwilliger TC Urzhumtsev AG Videau LL Williams CJ Adams PD Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix Acta Crystallogr. Sect. D US 2019 31588918 doi:10.1107/S2059798319011471 1399-0047 0353 ABCRE6 24kr FULLOVERLAP EMDB EMD-69590 associated EM volume

Single-domain antibody G2.3 in complex with hemagglutinin H1 Single-domain antibody G2.3 in complex with hemagglutinin H1 0 1 2 Influenza A virus (A/California/04/2009(H1N1)) 0.465 Hemagglutinin Influenza A virus (A/California/04/2009(H1N1)) 0.063447141 3 Cricetulus griseus LEVO MKAILVVLLYTFATANADTLCIGYHANNSTDTVDTVLEKNVTVTHSVNLLEDKHNGKLCKLRGVAPLHLGKCNIAGWILG NPECESLSTASSWSYIVETPSSDNGTCYPGDFIDYEELREQLSSVSSFERFEIFPKTSSWPNHDSNKGVTAACPHAGAKS FYKNLIWLVKKGNSYPKLSKSYINDKGKEVLVLWGIHHPSTSADQQSLYQNADTYVFVGSSRYSKKFKPEIAIRPKVRDQ EGRMNYYWTLVEPGDKITFEATGNLVVPRYAFAMERNAGSGIIISDTPVHDCNTTCQTPKGAINTSLPFQNIHPITIGKC PKYVKSTKLRLATGLRNIPSIQSRGLFGAIAGFIEGGWTGMVDGWYGYHHQNEQGSGYAADLKSTQNAIDEITNKVNSVI EKMNTQFTAVGKEFNHLEKRIENLNKKVDDGFLDIWTYNAELLVLLENERTLDYHDSNVKNLYEKVRSQLKNNAKEIGNG CFEFYHKCDNTCMESVKNGTYDYPKYSEEAKLNREEIDSGGGGRLVPRGSPGSGYIPEAPRDGQAYVRKDGEWVLLSTFL GHHHHHH C3W5S1 Heavy chain antibody G2.3-Fc synthetic construct 0.04418816799999999 3 Cricetulus griseus LEVO MLGPCMLLLLLLLGLRLQLSLGEVQLVESGGGLVQAGGSLRLSCAASGRIFRTYDMGWYRQAPGKEREFVARISWSGGST NYADFVKGRFTISKDSAKNTVYLQMNSLKPEDTAMYFCNADPSSVVGAIGAGYVYWGQGTQVTVSSEPKTPKPQPQPQPQ PQPNPTTESKCPKCPAPELLGGPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNA KTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSREEMTKNQVSLTC LVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK 2-acetamido-2-deoxy-beta-D-glucopyranose 0.000221208 15 NAG singleParticle particle 7.6 Quantifoil R1.2/1.3 COPPER 300 CARBON HOLEY ARRAY GLOW DISCHARGE 30 AIR ETHANE TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 100.0 0.01 0.6 1.5 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN Microscope was modified with a CETCOR Cs corrector (CEOS GmbH). GIF Bioquantum 20

Preliminary grid screening was performed manually.

GATAN K3 BIOQUANTUM (6k x 4k) 5760 4092 1 2953 3.9 66.0

Images were collected in movie-mode at 60 frames per exposure time.

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