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        <sites>
            <deposition>PDBj</deposition>
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        <key_dates>
            <deposition>2019-04-24</deposition>
            <header_release>2019-08-21</header_release>
            <map_release>2019-09-11</map_release>
            <update>2025-06-25</update>
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            <grant_reference>
                <funding_body>National Natural Science Foundation of China</funding_body>
                <country>China</country>
            </grant_reference>
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        <title>Structure of human T cell receptor-CD3 complex</title>
        <authors_list>
            <author>Dong D</author>
            <author>Zheng L</author>
        </authors_list>
        <keywords>IMMUNE SYSTEM</keywords>
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    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Zheng L</author>
                    <author order="2">Lin J</author>
                    <author order="3">Zhang B</author>
                    <author order="4">Zhu Y</author>
                    <author order="5">Li N</author>
                    <author order="6">Xie S</author>
                    <author order="7">Wang Y</author>
                    <author order="8">Gao N</author>
                    <author order="9">Huang Z</author>
                    <title>Structural basis of assembly of the human T cell receptor-CD3 complex.</title>
                    <journal_abbreviation>Nature</journal_abbreviation>
                    <country>UK</country>
                    <volume>573</volume>
                    <first_page>546</first_page>
                    <last_page>552</last_page>
                    <year>2019</year>
                    <external_references type="PUBMED">31461748</external_references>
                    <external_references type="DOI">doi:10.1038/s41586-019-1537-0</external_references>
                    <external_references type="ISSN">1476-4687</external_references>
                    <external_references type="CSD">0006</external_references>
                    <external_references type="ASTM">NATUAS</external_references>
                </journal_citation>
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        <pdb_list>
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                <pdb_id>6jxr</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>complex</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>complex</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>
                        <macromolecule_id>6</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>T-cell surface glycoprotein CD3 zeta chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018723438999999998</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MKWKALFTAAILQAQLPITEAQSFGLLDPKLCYLLDGILFIYGVILTALFLRVKFSRSADAPAYQQGQNQLYNELNLGRR
EEYDVLDKRRGRDPEMGGKPQRRKNPQEGLYNELQKDKMAEAYSEIGMKGERRRGKGHDGLYQGLSTATKDTYDALHMQA
LPPR</string>
                    <external_references type="UNIPROTKB">P20963</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>T-cell surface glycoprotein CD3 delta chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018949537</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>MEHSTFLSGLVLATLLSQVSPFKIPIEELEDRVFVNCNTSITWVEGTVGTLLSDITRLDLGKRILDPRGIYRCNGTDIYK
DKESTVQVHYRMCQSCVELDPATVAGIIVTDVIATLLLALGVFCFAGHETGRLSGAADTQALLRNDQVYQPLRDRDDAQY
SHLGGNWARNK</string>
                    <external_references type="UNIPROTKB">P04234</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>T-cell surface glycoprotein CD3 epsilon chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.023174227</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MQSGTHWRVLGLCLLSVGVWGQDGNEEMGGITQTPYKVSISGTTVILTCPQYPGSEILWQHNDKNIGGDEDDKNIGSDED
HLSLKEFSELEQSGYYVCYPRGSKPEDANFYLYLRARVCENCMEMDVMSVATIVIVDICITGGLLLLVYYWSKNRKAKAK
PVTRGAGAGGRQRGQNKERPPPVPNPDYEPIRKGQRDLYSGLNQRRI</string>
                    <external_references type="UNIPROTKB">P07766</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>T-cell surface glycoprotein CD3 gamma chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.020493456999999996</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>MEQGKGLAVLILAIILLQGTLAQSIKGNHLVKVYDYQEDGSVLLTCDAEAKNITWFKDGKMIGFLTEDKKKWNLGSNAKD
PRGMYQCKGSQNKSKPLQVYYRMCQNCIELNAATISGFLFAEIVSIFVLAVGVYFIAGQDGVRQSRASDKQTLLPNDQLY
QPLKDREDDQYSHLQGNQLRRN</string>
                    <external_references type="UNIPROTKB">P09693</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="5">
                <name>T cell receptor alpha variable 12-3,Possible J 11 gene segment,T cell receptor alpha constant</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.028308662</theoretical>
                </molecular_weight>
                <details>fusion protein of residues 22-114 from A0A0B4J271, residues 116-132 from A0N4Z6 and residues 134-273 from P01848.</details>
                <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>QQKEVEQDPGPLSVPEGAIVSLNCTYSNSAFQYFMWYRQYSRKGPELLMYTYSSGNKEDGRFTAQVDKSSKYISLFIRDS
QPSDSATYLCAMSKGYSTLTFGKGTMLLVSPDIQNPDPAVYQLRDSKSSDKSVCLFTDFDSQTNVSQSKDSDVYITDKTV
LDMRSMDFKSNSAVAWSNKSDFACANAFNNSIIPEDTFFPSPESSCDVKLVEKSFETDTNLNFQNLSVIGFRILLLKVAG
FNLLMTLRLWSS</string>
                    <external_references type="UNIPROTKB">A0A0B4J271</external_references>
                    <external_references type="UNIPROTKB">A0N4Z6</external_references>
                    <external_references type="UNIPROTKB">P01848</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="6">
                <name>T cell receptor beta variable 6-5,M1-specific T cell receptor beta chain,T cell receptor beta constant 2</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.032498463</theoretical>
                </molecular_weight>
                <details>fusion protein of residues 22-112 from A0A0K0K1A5, residues 121-134 from P0DSE2 and residues 135-312 from A0A0G2JMB4.</details>
                <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>GVTQTPKFQVLKTGQSMTLQCAQDMNHEYMSWYRQDPGMGLRLIHYSVGAGITDQGEVPNGYNVSRSTTEDFPLRLLSAA
PSQTSVYFCASRRRQGASGEQYFGPGTRLTVTEDLKNVFPPEVAVFEPSEAEISHTQKATLVCLATGFYPDHVELSWWVN
GKEVHSGVSTDPQPLKEQPALNDSRYCLSSRLRVSATFWQNPRNHFRCQVQFYGLSENDEWTQDRAKPVTQIVSAEAWGR
ADCGFTSESYQQGVLSATILYEILLGKATLYAVLVSALVLMAMVKRKDSRG</string>
                    <external_references type="UNIPROTKB">A0A0K0K1A5</external_references>
                    <external_references type="UNIPROTKB">P0DSE2</external_references>
                    <external_references type="UNIPROTKB">A0A0G2JMB4</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
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            <aggregation_state>cell</aggregation_state>
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                <single_particle_preparation preparation_id="1">
                    <buffer>
                        <ph>7.5</ph>
                    </buffer>
                    <staining>
                        <type>NEGATIVE</type>
                        <material>Uranyl Acetate</material>
                    </staining>
                    <vitrification>
                        <cryogen_name>NITROGEN</cryogen_name>
                    </vitrification>
                </single_particle_preparation>
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            <microscopy_list>
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                    <microscope>FEI TITAN KRIOS</microscope>
                    <illumination_mode>SPOT SCAN</illumination_mode>
                    <imaging_mode>DARK FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">300</acceleration_voltage>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">64.4</average_electron_dose_per_image>
                        </image_recording>
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                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>197487</number_images_used>
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                    <type>MAXIMUM LIKELIHOOD</type>
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        </structure_determination>
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