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    <admin>
        <current_status>
            <date>2024-10-23</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2020-11-23</deposition>
            <header_release>2021-02-10</header_release>
            <map_release>2021-02-10</map_release>
            <update>2024-10-23</update>
        </key_dates>
        <title>SARS-CoV-spike RBD bound to two neutralising nanobodies</title>
        <authors_list>
            <author>Hallberg BM</author>
            <author>Das H</author>
        </authors_list>
        <keywords>spike glycoprotein, SARS-CoV-2, nanobody, VIRAL PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0001-5995-2557" order="1">Koenig PA</author>
                    <author ORCID="0000-0001-7495-7065" order="2">Das H</author>
                    <author ORCID="0000-0002-2412-7853" order="3">Liu H</author>
                    <author order="4">Kummerer BM</author>
                    <author ORCID="0000-0001-7167-8431" order="5">Gohr FN</author>
                    <author ORCID="0000-0001-8580-4590" order="6">Jenster LM</author>
                    <author ORCID="0000-0003-2301-1610" order="7">Schiffelers LDJ</author>
                    <author ORCID="0000-0003-0106-7277" order="8">Tesfamariam YM</author>
                    <author ORCID="0000-0002-1570-8445" order="9">Uchima M</author>
                    <author ORCID="0000-0002-3391-9633" order="10">Wuerth JD</author>
                    <author ORCID="0000-0003-0114-5730" order="11">Gatterdam K</author>
                    <author order="12">Ruetalo N</author>
                    <author ORCID="0000-0003-4778-3009" order="13">Christensen MH</author>
                    <author ORCID="0000-0001-6513-8877" order="14">Fandrey CI</author>
                    <author order="15">Normann S</author>
                    <author ORCID="0000-0002-9104-5858" order="16">Todtmann JMP</author>
                    <author order="17">Pritzl S</author>
                    <author ORCID="0000-0001-5514-2418" order="18">Hanke L</author>
                    <author ORCID="0000-0003-3675-6523" order="19">Boos J</author>
                    <author ORCID="0000-0001-9754-4503" order="20">Yuan M</author>
                    <author ORCID="0000-0002-6021-3740" order="21">Zhu X</author>
                    <author ORCID="0000-0003-0988-2487" order="22">Schmid-Burgk JL</author>
                    <author order="23">Kato H</author>
                    <author ORCID="0000-0001-8989-5813" order="24">Schindler M</author>
                    <author ORCID="0000-0002-6469-2419" order="25">Wilson IA</author>
                    <author ORCID="0000-0002-7718-5002" order="26">Geyer M</author>
                    <author ORCID="0000-0002-8541-2519" order="27">Ludwig KU</author>
                    <author ORCID="0000-0002-6781-0345" order="28">Hallberg BM</author>
                    <author ORCID="0000-0002-9078-6697" order="29">Wu NC</author>
                    <author ORCID="0000-0002-9979-9769" order="30">Schmidt FI</author>
                    <title>Structure-guided multivalent nanobodies block SARS-CoV-2 infection and suppress mutational escape</title>
                    <journal_abbreviation>Science</journal_abbreviation>
                    <country>US</country>
                    <volume>371</volume>
                    <year>2021</year>
                    <external_references type="PUBMED">33436526</external_references>
                    <external_references type="DOI">doi:10.1126/science.abe6230</external_references>
                    <external_references type="ISSN">1095-9203</external_references>
                    <external_references type="CSD">0038</external_references>
                    <external_references type="ASTM">SCIEAS</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>7b17</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Structure of SARS-CoV-2 spike RBD in complex with SARS-CoV-2 neutralizing biparatopic nanobody VE</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Structure of SARS-CoV-2 spike RBD in complex with SARS-CoV-2 neutralizing biparatopic nanobody VE</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Density from localised reconstruction from full spike - VE data.</details>
                <molecular_weight>
                    <theoretical units="MDa">0.3</theoretical>
                </molecular_weight>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="2">
                <name>Spike glycoprotein</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="2697049">Severe acute respiratory syndrome coronavirus 2</organism>
                </natural_source>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="3">
                <name>biparatopic nanobody VE</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="30538">Vicugna pacos</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Spike protein S1</name>
                <natural_source database="NCBI">
                    <organism ncbi="2697049">Severe acute respiratory syndrome coronavirus 2</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.02190157</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>NLCPFGEVFNATRFASVYAWNRKRISNCVADYSVLYNSASFSTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPG
QTGKIADYNYKLPDDFTGCVIAWNSNNLDSKVGGNYNYLYRLFRKSNLKPFERDISTEIYQAGSTPCNGVEGFNCYFPLQ
SYGFQPTNGVGYQPYRVVVLSFELLHAPATVCGPK</string>
                    <external_references type="UNIPROTKB">P0DTC2</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>SARS-CoV-2 neutralizing biparatopic nanobody VE,nanobody E from Lama glama,SARS-CoV-2 neutralizing biparatopic nanobody VE,nanobody E from Lama glama</name>
                <natural_source database="NCBI">
                    <organism ncbi="9844">Lama glama</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.030102807</theoretical>
                </molecular_weight>
                <details>Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker,Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker, 1-119 nanobody from Alpacka, 120-136: linker, 137-263: nanobody from Llama, 264-283: cloning and purification tag,Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker,Nanobody V from Vicugna pacos and nanobody E from Lama glama connected with a 15 residue linker, 1-119 nanobody from Alpacka, 120-136: linker, 137-263: nanobody from Llama, 264-283: cloning and purification tag</details>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>QVQLVETGGGLVQPGGSLRLSCAASGFTFSSYAMGWARQVPGKGLEWVSYIYSDGSTEYQDSVKGRFTISRDNAKSTVYL
QMNSLKPEDTAVYYCATEGSLGGWGRDFGSWGQGTQVTVSSGGGGSGGGGSGGGGSQVQLVETGGGFVQPGGSLRLSCAA
SGVTLDYYAIGWFRQAPGKEREGVSCIGSSDGRTYYSDSVKGRFTISRDNAKNTVYLQMNSLKPEDTAVYYCALTVGTYY
SGNYHYTCSDDMDYWGKGTQVTVSSGGYPYDVPDYAGHHHHHH</string>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="3">
                <name>2-acetamido-2-deoxy-beta-D-glucopyranose</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000221208</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>NAG</formula>
            </ligand>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>singleParticle</method>
            <aggregation_state>particle</aggregation_state>
            <specimen_preparation_list>
                <single_particle_preparation preparation_id="1">
                    <buffer>
                        <ph>7.4</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>TFS KRIOS</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">300</acceleration_voltage>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <zemlin_tableau/>
                    </alignment_procedure>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 BIOQUANTUM (6k x 4k)</film_or_detector_model>
                            <average_exposure_time units="s">1.5</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">48.6</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </single_particle_microscopy>
            </microscopy_list>
            <singleparticle_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <startup_model type_of_model="OTHER"/>
                <final_reconstruction>
                    <algorithm>BACK PROJECTION</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">4.01</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>2.15</version>
                        </software>
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                    <number_images_used>92938</number_images_used>
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                <initial_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                    <software_list>
                        <software>
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                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>2.15</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
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            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>Z</fast>
            <medium>Y</medium>
            <slow>X</slow>
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            <average>-0.000000000003959</average>
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        </contour_list>
        <label>::::EMDATABANK.org::::EMD-11980::::</label>
        <annotation_details>Resolve Cryo-EM in the PHENIX suite used on the half-maps from localised reconstruction.</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
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                <dimensions>
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                    <a units="Å">612.0</a>
                    <b units="Å">612.0</b>
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                <label>::::EMDATABANK.org::::EMD-11980::::</label>
                <annotation_details>Half map 1 from the localised reconstruction.</annotation_details>
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                    <b units="Å">612.0</b>
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                    <beta units="deg">90.0</beta>
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                <axis_order>
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                    <medium>Y</medium>
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                        <source>AUTHOR</source>
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                <label>::::EMDATABANK.org::::EMD-11980::::</label>
                <annotation_details>Half map 1 from the localised reconstruction.</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
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