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    <admin>
        <current_status>
            <date>2025-02-19</date>
            <code>REL</code>
            <processing_site>PDBc</processing_site>
        </current_status>
        <sites>
            <deposition>PDBj</deposition>
            <last_processing>PDBc</last_processing>
        </sites>
        <key_dates>
            <deposition>2024-05-28</deposition>
            <header_release>2025-02-05</header_release>
            <map_release>2025-02-05</map_release>
            <update>2025-02-19</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Natural Science Foundation of China (NSFC)</funding_body>
                <country>China</country>
            </grant_reference>
        </grant_support>
        <title>CD73 bound with HB0045</title>
        <authors_list>
            <author>Xu J</author>
            <author>Wan L</author>
            <author>He Y</author>
        </authors_list>
        <keywords>CD73, complex, antibody coaktail, IMMUNE SYSTEM</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Xu JG</author>
                    <author order="2">Chen S</author>
                    <author order="3">He Y</author>
                    <author ORCID="0009-0003-6051-2251" order="4">Zhu X</author>
                    <author order="5">Wang Y</author>
                    <author order="6">Ye Z</author>
                    <author order="7">Zhou JC</author>
                    <author order="8">Wu X</author>
                    <author order="9">Zhang L</author>
                    <author order="10">Ren X</author>
                    <author order="11">Jia H</author>
                    <author order="12">Yu H</author>
                    <author order="13">Wei X</author>
                    <author order="14">Feng Y</author>
                    <author order="15">Chen X</author>
                    <author order="16">Cui X</author>
                    <author order="17">Pan X</author>
                    <author order="18">Wang S</author>
                    <author order="19">Xia S</author>
                    <author order="20">Shang H</author>
                    <author order="21">Pu Y</author>
                    <author order="22">Xu W</author>
                    <author ORCID="0000-0002-4427-7920" order="23">Li H</author>
                    <author order="24">Chen Q</author>
                    <author ORCID="0009-0007-7376-1934" order="25">Chen Z</author>
                    <author order="26">Wang M</author>
                    <author order="27">Yan X</author>
                    <author order="28">Shi H</author>
                    <author order="29">Li M</author>
                    <author order="30">Xia Y</author>
                    <author ORCID="0000-0002-2062-7113" order="31">Bellelli R</author>
                    <author order="32">Dong S</author>
                    <author ORCID="0000-0003-0270-9729" order="33">He J</author>
                    <author ORCID="0000-0002-7837-653X" order="34">Huang J</author>
                    <author order="35">Cai CL</author>
                    <author order="36">Zhu X</author>
                    <author ORCID="0000-0001-6974-0486" order="37">Zhan Y</author>
                    <author ORCID="0009-0007-7676-3337" order="38">Wan L</author>
                    <title>An antibody cocktail targeting two different CD73 epitopes enhances enzyme inhibition and tumor control.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>15</volume>
                    <first_page>10872</first_page>
                    <last_page>10872</last_page>
                    <year>2024</year>
                    <external_references type="PUBMED">39738003</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-024-55207-9</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>8znz</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>CD73 complexed with HB0017 antibody coaktail</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>CD73 complexed with HB0017 antibody coaktail</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>4</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>5</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="kDa/nm">0.63</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>5'-nucleotidase</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.058155199</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>AWELTILHTNDVHSRLEQTSEDSSKCVNASRCMGGVARLFTKVQQIRRAEPNVLLLDAGDQYQGTIWFTVYKGAEVAHFM
NALRYDAMALGNHEFDNGVEGLIEPLLKEAKFPILSANIKAKGPLASQISGLYLPYKVLPVGDEVVGIVGYTSKETPFLS
NPGTNLVFEDEITALQPEVDKLKTLNVNKIIALGHSGFEMDKLIAQKVRGVDVVVGGHSNTFLYTGNPPSKEVPAGKYPF
IVTSDDGRKVPVVQAYAFGKYLGYLKIEFDERGNVISSHGNPILLNSSIPEDPSIKADINKWRIKLDNYSTQELGKTIVY
LDGSSQSCRFRECNMGNLICDAMINNNLRHTDEMFWNHVSMCILNGGGIRSPIDERNNGTITWENLAAVLPFGGTFDLVQ
LKGSTLKKAFEHSVHRYGQSTGEFLQVGGIHVVYDLSRKPGDRVVKLDVLCTKCRVPSYDPLKMDEVYKVILPNFLANGG
DGFQMIKDELLRHDSGDQDINVVSTYISKMKVIYPAVEGRIKFS</string>
                    <external_references type="UNIPROTKB">P21589</external_references>
                </sequence>
                <ec_number>3.1.3.35</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>HB0038 Fab light chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.011320489999999999</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>DIQMTQSPSSLSASVGDRVTITCRASQDVGTAEAWYQQKPGKAPKLLIYWASTRHTGVPSRFSGSGSGTDFTLTISSLQP
EDFATYYCQQYSSYPLTFGQGTKL</string>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>HB0038 Fab heavy chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.013596152</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>QVQLVESGGGLVKPGGSLRLSCAASGFTFSKYAMSWIRQAPGKGLEWVAEISSGGGYINYADSVKGRFTISRDNAKNSLY
LQMNSLRAEDTAVYYCARAIYYYGSSYNYYAMDYWGQGTTVTVS</string>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>HB0039 Fab heavy chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.013236699</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>QVQLVQSGAEVKKPGASVKLSCKASGYTFTSYWIHWVRQAPGQGLEWIGMIHPNSGSTYYNEKFKGRATLTVDKSTSTAY
MELSSLRSEDTAVYYCARYYGSDYEWYFDVWGQGTTV</string>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="5">
                <name>HB0039 Fab light chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.011338706</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>IQMTQSPSSMSASVGDRVTITCKASQNVRTAVVWYQQKPGKAPKALIYLASNRHTGVPDRFSGSGSGTDFTLTISSLQPE
DFATYFCLQHWNYPYTFGQGTKL</string>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="6">
                <name>ZINC ION</name>
                <molecular_weight>
                    <theoretical units="MDa">6.5409e-05</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <formula>ZN</formula>
            </ligand>
            <ligand macromolecule_id="7">
                <name>SODIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">2.299e-05</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <formula>NA</formula>
            </ligand>
            <ligand macromolecule_id="8">
                <name>CALCIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">4.0078e-05</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <formula>CA</formula>
            </ligand>
        </macromolecule_list>
    </sample>
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            <method>singleParticle</method>
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                    <buffer>
                        <ph>7.4</ph>
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                    <grid>
                        <model>Quantifoil</model>
                        <material>COPPER</material>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>CONTINUOUS</film_topology>
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                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
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                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI TITAN 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>
                    <nominal_defocus_min units="µm">1.2</nominal_defocus_min>
                    <nominal_defocus_max units="µm">3.0</nominal_defocus_max>
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                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 (6k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">55.0</average_electron_dose_per_image>
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                <startup_model type_of_model="PDB ENTRY">
                    <pdb_model>
                        <pdb_id>6TVG</pdb_id>
                    </pdb_model>
                    <details>CD73 model</details>
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                <final_reconstruction>
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                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
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                <initial_angle_assignment>
                    <type>ANGULAR RECONSTITUTION</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>ANGULAR RECONSTITUTION</type>
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