<?xml version="1.0" encoding="UTF-8"?>
<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://ftp.ebi.ac.uk/pub/databases/em_ebi/emdb_related/emdb-schemas/emdb_schemas/v3/v3_0_11_0/emdb.xsd" version="3.0.11.0" emdb_id="EMD-47264">
    <admin>
        <current_status>
            <date>2026-01-21</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <revision_history>
            <revision version="1.0" date="2026-01-21">
                <change_list>
                    <model>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </model>
                    <metadata>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </metadata>
                    <additional_map part="1">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                    <fsc>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </fsc>
                    <half_map part="1">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                    <half_map part="2">
                        <revision_type>INITIAL_RELEASE</revision_type>
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                    <image>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                    <mask part="1">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                    <primary_map>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                </change_list>
            </revision>
        </revision_history>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2024-10-10</deposition>
            <header_release>2026-01-21</header_release>
            <map_release>2026-01-21</map_release>
            <update>2026-01-21</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)</funding_body>
                <code>R01 DK131118-01</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)</funding_body>
                <code>R01 DK123463-01</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)</funding_body>
                <code>(F32DK137477-01A1</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)</funding_body>
                <code>TL1DK132769</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)</funding_body>
                <code>U2CDK129917</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>PKD2 ion channel, F634A mutant</title>
        <authors_list>
            <author>Esarte Palomero O</author>
            <author>DeCaen PG</author>
        </authors_list>
        <keywords>Ion channel, TRP channel, polycystin, membrane protein</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="false">
                    <author ORCID="0000-0003-2022-3140" order="1">Esarte Palomero O</author>
                    <author ORCID="0000-0001-8776-983X" order="2">DeCaen PG</author>
                    <title>PKD2 ion channel, F629S variant</title>
                    <journal_abbreviation>To Be Published</journal_abbreviation>
                    <external_references type="CSD">0353</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>9dwt</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
        <other_db_list>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-47264</accession_id>
                <content_type>associated EM volume</content_type>
                <details>PKD2 ion channel, F634A mutant</details>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>PKD2 ion channel F634A mutant protomer</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>PKD2 ion channel F634A mutant protomer</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.3396</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Polycystin-2</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.056038362999999994</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>EKYLKSVLRELVTYLLFLIVLCILTYGMMSSNVYYYTRMMSQLFLDTPVSKTEKTNFKTLSSMEDFWKFTEGSLLDGLYW
KMQPSNQTEADNRSFIFYENLLLGVPRIRQLRVRNGSCSIPQDLRDEIKECYDVYSVSSEDRAPFGPRNGTAWIYTSEKD
LNGSSHWGIIATYSGAGYYLDLSRTREETAAQVASLKKNVWLDRGTRATFIDFSVYNANINLFCVVRLLVEFPATGGVIP
SWQFQPLKLIRYVTTFDFFLAACEIIFCFFIFYYVVEEILEIRIHKLHYFRSFWNCLDVVIVVLSVVAIGINIYRTSNVE
VLLQFLEDQNTFPNFEHLAYWQIQFNNIAAVTVFFVWIKLFKFINFNRTMSQLSTTMSRCAKDLFGFAIMFFIIFLAYAQ
LAYLVFGTQVDDFSTFQECIATQFRIILGDINFAEIEEANRVLGPIYFTTFVFFMFFILLNMFLAIINDTYSEVKSDLAQ</string>
                    <external_references type="UNIPROTKB">Q13563</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="2">
                <name>CALCIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">4.0078e-05</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>CA</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">1.0</concentration>
                    <buffer>
                        <ph>7.4</ph>
                        <component>
                            <concentration units="mM">150.0</concentration>
                            <formula>NaCl</formula>
                            <name>Sodium Chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">25.0</concentration>
                            <formula>HEPES</formula>
                            <name>(4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid)</name>
                        </component>
                        <component>
                            <concentration units="mM">1.0</concentration>
                            <formula>CaCl2</formula>
                            <name>Calcium Chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">1.0</concentration>
                            <formula>TCEP</formula>
                            <name>tris(2-carboxyethyl)phosphine</name>
                        </component>
                        <details>25 mM HEPES-NaOH, 150 mM NaCl, 1 mM CaCl2, 1 mM TCEP</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/1</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY ARRAY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">20</time>
                            <atmosphere>AIR</atmosphere>
                            <pressure units="kPa">0.026000000000000002</pressure>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">95</chamber_humidity>
                        <chamber_temperature units="K">278</chamber_temperature>
                        <instrument>LEICA EM GP</instrument>
                        <details>Vitrification carried in air. Ethane temperature -183 C. </details>
                    </vitrification>
                    <details>Stabilized in amphipol A8-35. Monodisperse sample after gel filtration in a Superdex 200 column.</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>BRIGHT FIELD</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">0.6</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.4</nominal_defocus_max>
                    <nominal_magnification>130000.0</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <basic/>
                    </alignment_procedure>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Bioquantum</name>
                            <slit_width units="eV">10</slit_width>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 (6k x 4k)</film_or_detector_model>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">11520</width>
                                    <height units="pixel">8184</height>
                                </dimensions>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>14969</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">60.0</average_electron_dose_per_image>
                            <details>50 frame movie stacks. Super-resolution mode</details>
                        </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>1441572</number_selected>
                    <details>Micrographs were blob picked (130-170 angstrom)</details>
                </particle_selection>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4.5</version>
                        </software>
                    </software_list>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="INSILICO MODEL">
                    <insilico_model>Ab-initio reconstruction</insilico_model>
                </startup_model>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>C4</point_group>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">3.01</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4.5</version>
                        </software>
                    </software_list>
                    <details>Final reconstruction was generated using C4 symmetry</details>
                    <number_images_used>98122</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4.5</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4.5</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>3</number_classes>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="256001">
        <file>emd_47264.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>400</col>
            <row>400</row>
            <sec>400</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>400</x>
            <y>400</y>
            <z>400</z>
        </spacing>
        <cell>
            <a units="Å">259.52002</a>
            <b units="Å">259.52002</b>
            <c units="Å">259.52002</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>-0.2961952</minimum>
            <maximum>0.4370261</maximum>
            <average>0.0003364614</average>
            <std>0.015294541</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.6488001</x>
            <y units="Å">0.6488001</y>
            <z units="Å">0.6488001</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.071</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-47264::::</label>
        <annotation_details>PKD2 mutant F634A sharpened EM map</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <chain>
                        <residue_range>180-925</residue_range>
                        <source_name>AlphaFold</source_name>
                        <initial_model_type>in silico model</initial_model_type>
                    </chain>
                </initial_model>
                <details>The initial Alphafold model was fitted to the map using ChimeraX. Refinement was performed using ISOLDE and PHENIX.</details>
                <refinement_space>REAL</refinement_space>
                <overall_bvalue>101.0</overall_bvalue>
            </modelling>
        </modelling_list>
        <segmentation_list>
            <segmentation>
                <file>emd_47264_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <additional_map_list>
            <additional_map format="CCP4" size_kbytes="256001">
                <file>emd_47264_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>400</col>
                    <row>400</row>
                    <sec>400</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>400</x>
                    <y>400</y>
                    <z>400</z>
                </spacing>
                <cell>
                    <a units="Å">259.52002</a>
                    <b units="Å">259.52002</b>
                    <c units="Å">259.52002</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>-0.07286199</minimum>
                    <maximum>0.14416093</maximum>
                    <average>0.0003364614</average>
                    <std>0.005837615</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.6488001</x>
                    <y units="Å">0.6488001</y>
                    <z units="Å">0.6488001</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-47264::::</label>
                <annotation_details>PKD2 mutant F634A unsharpened EM map</annotation_details>
            </additional_map>
        </additional_map_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="256001">
                <file>emd_47264_half_map_2.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>400</col>
                    <row>400</row>
                    <sec>400</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>400</x>
                    <y>400</y>
                    <z>400</z>
                </spacing>
                <cell>
                    <a units="Å">259.52002</a>
                    <b units="Å">259.52002</b>
                    <c units="Å">259.52002</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>-0.6307246</minimum>
                    <maximum>0.5381444</maximum>
                    <average>0.0003419772</average>
                    <std>0.04235154</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.6488001</x>
                    <y units="Å">0.6488001</y>
                    <z units="Å">0.6488001</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-47264::::</label>
                <annotation_details>PKD2 mutant F634A EM Half map B</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="256001">
                <file>emd_47264_half_map_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>400</col>
                    <row>400</row>
                    <sec>400</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>400</x>
                    <y>400</y>
                    <z>400</z>
                </spacing>
                <cell>
                    <a units="Å">259.52002</a>
                    <b units="Å">259.52002</b>
                    <c units="Å">259.52002</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>-0.40837428</minimum>
                    <maximum>0.3976595</maximum>
                    <average>0.0003433511</average>
                    <std>0.04239377</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.6488001</x>
                    <y units="Å">0.6488001</y>
                    <z units="Å">0.6488001</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-47264::::</label>
                <annotation_details>PKD2 mutant F634A EM Half map A</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
