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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>2022-08-26</deposition>
            <header_release>2023-04-05</header_release>
            <map_release>2023-04-05</map_release>
            <update>2024-10-23</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Research Foundation - Flanders (FWO)</funding_body>
                <code>G0G0619N</code>
                <country>Belgium</country>
            </grant_reference>
        </grant_support>
        <title>Mouse leptin:LEP-R complex cryoEM structure (3:3 model)</title>
        <authors_list>
            <author>Verstraete K</author>
            <author>Savvides SN</author>
            <author>Verschueren KG</author>
            <author>Tsirigotaki A</author>
        </authors_list>
        <keywords>leptin, LEP-R, obesity, metabolism, energy balance, CYTOKINE</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Tsirigotaki A</author>
                    <author order="2">Dansercoer A</author>
                    <author order="3">Verschueren KHG</author>
                    <author order="4">Markovic I</author>
                    <author order="5">Pollmann C</author>
                    <author order="6">Hafer M</author>
                    <author order="7">Felix J</author>
                    <author order="8">Birck C</author>
                    <author order="9">Van Putte W</author>
                    <author order="10">Catteeuw D</author>
                    <author order="11">Tavernier J</author>
                    <author order="12">Fernando Bazan J</author>
                    <author order="13">Piehler J</author>
                    <author order="14">Savvides SN</author>
                    <author order="15">Verstraete K</author>
                    <title>Mechanism of receptor assembly via the pleiotropic adipokine Leptin.</title>
                    <journal_abbreviation>Nat.Struct.Mol.Biol.</journal_abbreviation>
                    <country>US</country>
                    <volume>30</volume>
                    <first_page>551</first_page>
                    <last_page>563</last_page>
                    <year>2023</year>
                    <external_references type="PUBMED">36959263</external_references>
                    <external_references type="DOI">doi:10.1038/s41594-023-00941-9</external_references>
                    <external_references type="ISSN">1545-9985</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>8avc</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Stucture of mouse leptin in complex with a trimerized form of the mouse Lep-R extracellular region</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Stucture of mouse leptin in complex with a trimerized form of the mouse Lep-R extracellular region</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>The mLEP-R ectodomain was C-terminally fused to a trimeric GCN4 isoleucine zipper tag and secreted from HEK93 FreeStyle cells and complex with refolded mouse leptin produced in E.coli.</details>
                <natural_source database="NCBI">
                    <organism ncbi="10090">Mus musculus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.444</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Leptin</name>
                <natural_source database="NCBI">
                    <organism ncbi="10090">Mus musculus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018873282999999998</theoretical>
                </molecular_weight>
                <details>N-terminally His-tagged mouse leptin was refolded from inclusion bodies produced in E.coli.</details>
                <number_of_copies>3</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MGSSHHHHHHPGGPGSENLYFQGGSTGGVPIQKVQDDTKTLIKTIVTRINDISHTQSVSAKQRVTGLDFIPGLHPILSLS
KMDQTLAVYQQVLTSLPSQNVLQIANDLENLRDLLHLLAFSKSCSLPQTSGLQKPESLDGVLEASLYSTEVVALSRLQGS
LQDILQQLDVSPEC</string>
                    <external_references type="UNIPROTKB">P41160</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Leptin receptor</name>
                <natural_source database="NCBI">
                    <organism ncbi="10090">Mus musculus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.097479391</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>LNLAYPISPWKFKLFCGPPNTTDDSFLSPAGAPNNASALKGASEAIVEAKFNSSGIYVPELSKTVFHCCFGNEQGQNCSA
LTDNTEGKTLASVVKASVFRQLGVNWDIECWMKGDLTLFICHMEPLPKNPFKNYDSKVHLLYDLPEVIDDSPLPPLKDSF
QTVQCNCSLRGCECHVPVPRAKLNYALLMYLEITSAGVSFQSPLMSLQPMLVVKPDPPLGLHMEVTDDGNLKISWDSQTM
APFPLQYQVKYLENSTIVREAAEIVSATSLLVDSVLPGSSYEVQVRSKRLDGSGVWSDWSSPQVFTTQDVVYFPPKILTS
VGSNASFHCIYKNENQIISSKQIVWWRNLAEKIPEIQYSIVSDRVSKVTFSNLKATRPRGKFTYDAVYCCNEQACHHRYA
ELYVIDVNINISCETDGYLTKMTCRWSPSTIQSLVGSTVQLRYHRRSLYCPDSPSIHPTSEPKNCVLQRDGFYECVFQPI
FLLSGYTMWIRINHSLGSLDSPPTCVLPDSVVKPLPPSNVKAEITVNTGLLKVSWEKPVFPENNLQFQIRYGLSGKEIQW
KTHEVFDAKSKSASLLVSDLCAVYVVQVRCRRLDGLGYWSNWSSPAYTLVMDVKVPMRGPEFWRKMDGDVTKKERNVTLL
WKPLTKNDSLCSVRRYVVKHRTAHNGTWSEDVGNRTNLTFLWTEPAHTVTVLAVNSLGASLVNFNLTFSWPMSKVSAVES
LSAYPLSSSCVILSWTLSPDDYSLLYLVIEWKILNEDDGMKWLRIPSNVKKFYIHDNFIPIEKYQFSLYPVFMEGVGKPK
IINGFTKDAIDKQQNDAGSTGGSGGSGGSGGSGGSRMKQIEDKIEEILSKIYHIENEIARIKKLIGER</string>
                    <external_references type="UNIPROTKB">P48356</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="3">
                <name>NICKEL (II) ION</name>
                <molecular_weight>
                    <theoretical units="MDa">5.8692999999999995e-05</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <formula>NI</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">
                    <concentration units="mg/mL">0.3</concentration>
                    <buffer>
                        <ph>7.4</ph>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <formula>C8H18N2O4S</formula>
                            <name>HEPES</name>
                        </component>
                        <component>
                            <concentration units="mM">150.0</concentration>
                            <formula>NaCl</formula>
                            <name>sodium chloride</name>
                        </component>
                        <details>20 mM HEPES, 150 mM NaCl, pH 7.4</details>
                    </buffer>
                    <grid>
                        <model>C-flat-1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">30</time>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">99</chamber_humidity>
                        <chamber_temperature units="K">22</chamber_temperature>
                        <instrument>LEICA EM GP</instrument>
                    </vitrification>
                    <details>This sample was monodisperse.</details>
                </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>OTHER</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">300</acceleration_voltage>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">1.2</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.5</nominal_defocus_max>
                    <nominal_magnification>105000.0</nominal_magnification>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 BIOQUANTUM (6k x 4k)</film_or_detector_model>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>13230</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">45.0</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>
                <particle_selection>
                    <number_selected>141157</number_selected>
                    <details>Movies were processed via patch-based motion correction and CTF estimation as implemented in cryoSPARC v3.3.1. Initial 2D classes were obtained by the blob picker function in cryoSPARC, followed by particle picking via TOPAZ as implemented in cryoSPARC. Junk particles were removed by multiple rounds of 2D classification and ab initio 3D classification resulting in a particle set of 141,157 particles.</details>
                </particle_selection>
                <startup_model type_of_model="INSILICO MODEL">
                    <insilico_model>Hybrid model: crystallographic structure (pdb 7z3r) + Alphafold model mouse LEPR</insilico_model>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <point_group>C1</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">4.6</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>v3.3.1</version>
                            <processing_details>Non-uniform refinement</processing_details>
                        </software>
                    </software_list>
                    <number_images_used>37530</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>v3.3.1</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>v3.3.1</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>2</number_classes>
                    <average_number_members_per_class>33128.0</average_number_members_per_class>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>v3.3.1</version>
                            <processing_details>Ab initio</processing_details>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="44958">
        <file>emd_15678.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>224</col>
            <row>224</row>
            <sec>224</sec>
        </dimensions>
        <origin>
            <col>0</col>
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            <sec>0</sec>
        </origin>
        <spacing>
            <x>224</x>
            <y>224</y>
            <z>224</z>
        </spacing>
        <cell>
            <a units="Å">371.392</a>
            <b units="Å">371.392</b>
            <c units="Å">371.392</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-0.38276014</minimum>
            <maximum>1.9273546</maximum>
            <average>0.00032553636</average>
            <std>0.025291251</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.658</x>
            <y units="Å">1.658</y>
            <z units="Å">1.658</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.178</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-15678::::</label>
        <annotation_details>Sharpenend cryo-EM map following non-uniform refinement</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
        <segmentation_list>
            <segmentation>
                <file>emd_15678_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <additional_map_list>
            <additional_map format="CCP4" size_kbytes="44958">
                <file>emd_15678_additional_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>224</col>
                    <row>224</row>
                    <sec>224</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>224</x>
                    <y>224</y>
                    <z>224</z>
                </spacing>
                <cell>
                    <a units="Å">371.392</a>
                    <b units="Å">371.392</b>
                    <c units="Å">371.392</c>
                    <alpha units="deg">90.0</alpha>
                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
                </axis_order>
                <statistics>
                    <minimum>-0.17875375</minimum>
                    <maximum>1.561388</maximum>
                    <average>0.00032553638</average>
                    <std>0.021873426</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.658</x>
                    <y units="Å">1.658</y>
                    <z units="Å">1.658</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-15678::::</label>
                <annotation_details>Non-sharpened cryo-EM map following non-uniform refinement</annotation_details>
            </additional_map>
        </additional_map_list>
        <half_map_list>
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                <file>emd_15678_half_map_1.map.gz</file>
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                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
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                <statistics>
                    <minimum>-0.3200861</minimum>
                    <maximum>1.6586734</maximum>
                    <average>0.0010535715</average>
                    <std>0.0353916</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.658</x>
                    <y units="Å">1.658</y>
                    <z units="Å">1.658</z>
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                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-15678::::</label>
                <annotation_details>Half map A</annotation_details>
            </half_map>
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                <file>emd_15678_half_map_2.map.gz</file>
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                    <space_group>1</space_group>
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                <dimensions>
                    <col>224</col>
                    <row>224</row>
                    <sec>224</sec>
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                    <a units="Å">371.392</a>
                    <b units="Å">371.392</b>
                    <c units="Å">371.392</c>
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                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
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                    <fast>X</fast>
                    <medium>Y</medium>
                    <slow>Z</slow>
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                    <minimum>-0.38594177</minimum>
                    <maximum>1.6130524</maximum>
                    <average>0.0010832036</average>
                    <std>0.035481803</std>
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                    <x units="Å">1.658</x>
                    <y units="Å">1.658</y>
                    <z units="Å">1.658</z>
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                        <source>AUTHOR</source>
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                </contour_list>
                <label>::::EMDATABANK.org::::EMD-15678::::</label>
                <annotation_details>Half map B</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
