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            <date>2026-02-04</date>
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            <grant_reference>
                <funding_body>National Fund for Scientific Research</funding_body>
                <country>Belgium</country>
            </grant_reference>
        </grant_support>
        <title>A composite Cryo-EM structure of GPR75</title>
        <authors_list>
            <author>Yuan Q</author>
            <author>Wu C</author>
        </authors_list>
        <keywords>GPCR, GPR75, MEMBRANE PROTEIN/IMMUNE SYSTEM, MEMBRANE PROTEIN-IMMUNE SYSTEM complex</keywords>
    </admin>
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                    <author order="1">Zhu ZN</author>
                    <author order="2">You CZ</author>
                    <author order="3">Yuan QN</author>
                    <author order="4">Xu JY</author>
                    <author order="5">Gu ZY</author>
                    <author order="6">Huang Z</author>
                    <author order="7">Liu M</author>
                    <author order="8">Shan B</author>
                    <author order="9">Wang JJ</author>
                    <author order="10">Hu W</author>
                    <author order="11">Wang K</author>
                    <author order="12">Yin WC</author>
                    <author order="13">Xu YW</author>
                    <author order="14">Xu HE</author>
                    <author order="15">Wu CR</author>
                    <title>Cryo-EM structures of GPR75 reveal an occluded orthosteric pocket challenging conventional drug discovery paradigms for an anti-obesity target.</title>
                    <journal_abbreviation>Acta Pharmacol.Sin.</journal_abbreviation>
                    <country>CN</country>
                    <year>2026</year>
                    <external_references type="PUBMED">41545757</external_references>
                    <external_references type="DOI">doi:10.1038/s41401-025-01720-6</external_references>
                    <external_references type="ISSN">1745-7254</external_references>
                </journal_citation>
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                <details>A composite Cryo-EM structure of GPR75</details>
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    <sample>
        <name>A composite Cryo-EM structure of GPR75</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>A composite Cryo-EM structure of GPR75</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>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>G subunit alpha (q)</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
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                <molecular_weight>
                    <theoretical units="MDa">0.041724383</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MGCTLSAEDKAAVERSKMIEKQLQKDKQVYRRTLRLLLLGADNSGKSTIVKQMRIYHVNGYSEEECKQYKAVVYSNTIQS
IIAIIRAMGRLKIDFGDSARADDARQLFVLAGAAEEGFMTAELAGVIKRLWKDSGVQACFNRSREYQLNDSAAYYLNDLD
RIAQPNYIPTQQDVLRTRVKTSGIFETKFQVDKVNFHMFDVGAQRDERRKWIQCFNDVTAIIFVVDSSDYNRLQEALNDF
KSIWNNRWLRTISVILFLNKQDLLAEKVLAGKSKIEDYFPEFARYTTPEDATPEPGEDPRVTRAKYFIRKEFVDISTASG
DGRHICYPHFTCSVDTENARRIFNDCKDIILQMNLREYNLV</string>
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                    <organism ncbi="9606">Homo sapiens</organism>
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                    <theoretical units="MDa">0.03777136699999999</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
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KLIIWDSYTTNKVHAIPLRSSWVMTCAYAPSGNYVACGGLDNICSIYNLKTREGNVRVSRELAGHTGYLSCCRFLDDNQI
VTSSGDTTCALWDIETGQQTTTFTGHTGDVMSLSLAPDTRLFVSGACDASAKLWDVREGMCRQTFTGHESDINAICFFPN
GNAFATGSDDATCRLFDLRADQELMTYSHDNIICGITSVSFSKSGRLLLAGYDDFNCNVWDALKADRAGVLAGHDNRVSC
LGVTDDGMAVATGSWDSFLKIWN</string>
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                    <organism ncbi="10090">Mus musculus</organism>
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                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>VQLVESGGGLVQPGGSRKLSCSASGFAFSSFGMHWVRQAPEKGLEWVAYISSGSGTIYYADTVKGRFTISRDDPKNTLFL
QMTSLRSEDTAMYYCVRSIYYYGSSPFDFWGQGTTLTVSAGGGGSGGGGSGGGGSADIVMTQATSSVPVTPGESVSISCR
SSKSLLHSNGNTYLYWFLQRPGQSPQLLIYRMSNLASGVPDRFSGSGSGTAFTLTISRLEAEDVGVYYCMQHLEYPLTFG
AGTKLEL</string>
                </sequence>
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            <protein_or_peptide macromolecule_id="4">
                <name>Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
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                <molecular_weight>
                    <theoretical units="MDa">0.007861143</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MASNNTASIAQARKLVEQLKMEANIDRIKVSKAAADLMAYCEAHAKEDPLLTPVPASENPFREKKFFCAIL</string>
                    <external_references type="UNIPROTKB">P59768</external_references>
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            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="5">
                <name>Probable G-protein coupled receptor 75,Maltose/maltodextrin-binding periplasmic protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="83333">Escherichia coli K-12</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.048262516</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>DLIHTATLVTCTFLLAVIFCLGSYGNFIVFLSFFDPAFRKFRTNFDFMILNLSFCDLFICGVTAPMFTFVLFFSSASSIP
DAFCFTFHLTSSGFIIMSLKTVAVIALHRLRMVLGKQPNRTASFPCTVLLTLLLWATSFTLATLATLKTSKSHLCLPMSS
LIAGKGKAILSLYVVDFTFCVAVVSVSYIMIAQTLRKNAQVRKCPPVITVDASRPQPFMGVPVQGGGDPIQCAMPALYRN
QNYNKLQHVQTRGYTKSPNQLVTPAASRLQLVSAINLSTAKDSKAVVTCVIIVLSVLVCCLPLGISLVQVVLSSNGSFIL
YQFELFGFTLIFFKSGLNPFIYSRNSAGLRRKVLWCLQLEGSAGSAAKIEEGKLVIWINGDKGYNGLAEVGKKFEKDTGI
KVTVEHPDKLEEKFPQVAATGDGPDIIFWAHDRFGGYAQS</string>
                    <external_references type="UNIPROTKB">O95800</external_references>
                    <external_references type="UNIPROTKB">P0AEX9</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="6">
                <name>water</name>
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                    <theoretical units="MDa">1.8015e-05</theoretical>
                </molecular_weight>
                <number_of_copies>6</number_of_copies>
                <formula>HOH</formula>
            </ligand>
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    </sample>
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                        <ph>7.4</ph>
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                        <cryogen_name>ETHANE</cryogen_name>
                    </vitrification>
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                    <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>
                    <nominal_defocus_min units="µm">8.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">18.0</nominal_defocus_max>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>FEI FALCON IV (4k x 4k)</film_or_detector_model>
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                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
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                <startup_model type_of_model="INSILICO MODEL"/>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">3.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
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                        <software>
                            <name>cryoSPARC</name>
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                    <type>MAXIMUM LIKELIHOOD</type>
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                    <type>MAXIMUM LIKELIHOOD</type>
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