KEY RESOURCES TABLE
| REAGENT or RESOURCE | SOURCE | IDENTIFIER |
|---|---|---|
| Antibodies | ||
|
| ||
| HRP-conjugated rabbit anti-mouse IgG antibody | Abcam | CAT#ab97046 |
| Ly-6G-APCe780 | ThermoFisher | CAT#14-5931-82 |
| F4/80-APCe780 | ThermoFisher | CAT#47-4801-82 |
| CD3-BV785 | BioLegend | CAT#100231 |
| CD19-BV421 | BioLegend | CAT#115549 |
| IgM-BV605 | BioLegend | CAT#406523 |
| IgG-PerCP/Cy5.5 | BioLegend | CAT#405314 |
| msIgG1 isoforms of Ab100, Ab102, Ab109, Ab110, Ab111, Ab114, Ab116 | This paper | N/A |
| Ab111 IgG2a isoform | This paper | N/A |
| Ab111 IgG2a LALA-PG isoform | This paper | N/A |
|
| ||
| Bacterial and virus strains | ||
|
| ||
| A/Michigan/45/2015 (H1N1) | Duke RBL | Lot 1483-180124 |
| A/California/07/2009 (H1N1) | Duke RBL | Lot 13659-20141211 |
| A/Solomon Islands/3/2006 (H1N1) | Duke RBL | Lot 331-05132014 |
| A/Hawaii/15/2001 (H1N1) | Duke RBL | Lot FR-394-20200928 |
| A/New Caledonia/20/1999 (H1N1) | IRR / Duke RBL | Lot FR-395-20200928 |
| A/Beijing/262/1995 (H1N1) | Duke RBL | Lot 12277-16524 |
| A/Texas/36/1991 | Duke RBL | Lot 1096-20200807 |
| A/Puerto Rico/8/1934 | Duke RBL | Lot CR-05282014 |
|
| ||
| Chemicals peptides and recombinant proteins | ||
|
| ||
| rsHAtCh (rsH4, rsH3, rsH14 heterotrimer) | This paper | N/A |
| rsH14 monomeric head domain | Produced in house; Bajic et al.27 | N/A |
| rsH3 monomeric head domain | This paper | N/A |
| rsH4 monomeric head domain | Produced in house; Bajic et al.27 | N/A |
| GABH heterodimeric coiled coil (acidic and basic strands) | Produced in house Keating et al.61 |
N/A |
| H2227 | Produced in house Schmidt et al.56 |
N/A |
| H2526 | Produced in house Schmidt et al.56 |
N/A |
| CH67 | Produced in house Whittle et al.37 |
N/A |
| 641 I-9 | Produced in house Schmidt et al.56 |
N/A |
| C05 | Produced in house Ekiert et al.47 |
N/A |
| HRV 41.1 | Produced in house Schmidt et al.56 |
N/A |
| Full length soluble ectodomains of H1 MA-90, H1 BE-95, H1 NC-99, H1 SI-06, and H1 CA-09 | Produced in house | N/A |
| H1 SI-06 FLsE ΔRBS | Produced in house Lingwood et al.39 |
N/A |
| Monomeric HA head domains of H1 USSR-77, KW-86, MA-90, FL-93, BE-95, NC-99, SI-06, CA-09 | Produced in house Schmidt et al.56 |
N/A |
| Ab100 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251202 / OP251203 |
| Ab102 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251204 / OP251205 |
| Ab104 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251206 / OP251207 |
| Ab105 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251208 / OP251209 |
| Ab108 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251210 / OP251211 |
| Ab109 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251212 / OP251213 |
| Ab110 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251214 / OP251215 |
| Ab111 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251216 / OP251217 |
| Ab114 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251218 / OP251219 |
| Ab116 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251220 / OP251221 |
| Ab117 (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251222 / OP251223 |
| Lin100 UCA (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251224 / OP251225 |
| Lin100 (VH/VL sequence from IGHV1-2 HC2 mouse)I-0 | This paper | OP251226 / OP251227 |
| Lin114 UCA (VH/VL sequence from IGHV1-2 HC2 mouse) | This paper | OP251228 / OP251229 |
| Lin119 (VH/VL sequence from IGHV1-2 HC2 mouse)UCA | This paper | OP251230 / OP251231 |
| Lin140 (VH/VL sequence from IGHV1-2 HC2 mouse)UCA | This paper | OP251232 / OP251233 |
| Lin143 (VH/VL sequence from IGHV1-2 HC2 mouse)UCA | This paper | OP251234 / OP251235 |
| Pierce HRV 3C protease | ThermoScientific | CAT#88946 |
| Sigma Adjuvant System | SigmaAldrich | CAT#S6322 |
| Streptavidin-PE conjugate | Invitrogen | CAT#12-4317-87 |
| Aqua Live/Dead amine-reactive dye | ThermoFisher | CAT#L34957 |
| Calcein, AM, cell-permeant dye | ThermoFisher | CAT#C3100MP |
| Streptavidin-APC/Cy7 conjugate | BioLegend | CAT#405208 |
| Streptavidin-BV650 conjugate | BioLegend | CAT#405232 |
| StrepTactin-PE conjugate | IBA Lifesciences | Item#6-5000-001 |
| StrepTactin-APC conjugate | IBA Lifesciences | Item#6-5010-001 |
| RNaseOUT | ThermoFisher | CAT#10777019 |
| TALON Metal Affinity Resin | Takara | CAT#635652 |
| Pierce Protein G Agarose | ThermoFisher | CAT#20399 |
| 1-Step ABTS substrate | ThermoFisher | Prod#37615 |
|
| ||
| Critical commercial assays | ||
|
| ||
| Ni-NTA Biosensors | ForteBio | Item#18-5101 |
| SuperScript IV VILO MasterMix | ThermoFisher | CAT#11756050 |
| MagMax mirVana Total RNA isolation kit | ThermoFisher | CAT#A27828 |
|
| ||
| Deposited data | ||
|
| ||
| Electron density map, Ab109 and H1 SI-06 FLsE | This paper | EMDB: EMD-26605 |
| Structure, Ab109 and H1 SI-06 FLsE | This paper | PDB: 7UMM |
| Electron density map, Ab111 and H1 SI-06 FLsE | This paper | EMDB: EMD-26604 |
| Isolated B cell antibody sequences | This paper | GenBank: OP251202 - OP251235 |
|
| ||
| Experimental models: Cell lines | ||
|
| ||
| Human: FreeStyle 293F | Thermo Fisher | Cat#R79007; RRID: CVCL_D603 |
| Human: Expi293F | Thermo Fisher | Cat#A14527; RRID: CVCL_D615 |
|
| ||
| Experimental models: Organisms/strains | ||
|
| ||
| cDC-IrF5−/− mice | Yousif et al.41 | N/A |
| IGHV1-2 HC2 mice | Sangesland et al.30 | N/A |
|
| ||
| Oligonucleotides | ||
|
| ||
| Murine B cell receptor sequencing primers | Tiller et al.; Rohatgi et al.,62,63 | N/A |
|
| ||
| Software and algorithms | ||
|
| ||
| FlowJo v10 | TreeStar |
https://www.flowjo.com; RRID: SCR_008520 |
| Prism v9 | GraphPad |
https://www.graphpad.com; RRID: SCR_002798 |
| IMGT | International ImMunoGeneTics Information System |
http://www.imgt.org; RRID: SCR_012780 |
| Cloanalyst | Kepler et al.64 | https://www.bu.edu/computationalimmunology/research/software/ |
| RELION | Scheres et al.65 | https://relion.readthedocs.io/en/release-3.1/ |
| Chimera | Pettersen et al.66 | https://www.cgl.ucsf.edu/chimera/ |
| PHASER | McCoy et al.67 | http://www.phaser.cimr.cam.ac.uk/index.php/Phaser_Crystallographic_Software |
| PHENIX | Adams et al.68 | https://www.phenix-online.org/ |
| COOT | Emsley et al.69 | http://www2.mrc-lmb.cam.ac.uk/personal/pemsley/coot/ |
| PyMol | Schrödinger | http://www.pymol.org |
| MolProbity | Chen et al.70 | http://molprobity.biochem.duke.edu |
| XDS | Kabsch et al.71 | https://xds.mr.mpg.de |
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| Other | ||
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| Superdex 200 Increase 10/300 GL | GE Healthcare | Cytiva 28-9909-44 |