<emd emdb_id="EMD-2220" version="3.0.1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://github.com/emdb-empiar/emdb-schemas/blob/master/v3/v3_0_1_1/emdb_relaxed.xsd">
    <admin>
        <current_status>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2012-10-12</deposition>
            <header_release>2012-11-14</header_release>
            <map_release>2012-11-14</map_release>
            <update>2012-11-14</update>
        </key_dates>
        <title>Cryo-EM structure of gastric H+,K+-ATPase with bound K+</title>
        <authors_list>
            <author>Abe K</author>
            <author>Tani K</author>
            <author>Friedrich T</author>
            <author>Fujiyoshi Y</author>
        </authors_list>
        <keywords>P-type ATPase, proton pump</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Abe K</author>
                    <author order="2">Tani K</author>
                    <author order="3">Friedrich T</author>
                    <author order="4">Fujiyoshi Y</author>
                    <title>Cryo-EM structure of gastric H+,K+-ATPase with a single occupied cation-binding site.</title>
                    <journal>PROC.NAT.ACAD.SCI.USA</journal>
                    <volume>109</volume>
                    <first_page>18401</first_page>
                    <last_page>18406</last_page>
                    <year>2012</year>
                    <external_references type="PUBMED">23091039</external_references>
                    <external_references type="DOI">doi:10.1073/pnas.1212294109</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
    </crossreferences>
    <sample>
        <name>Pig Gastric H,K-ATPase</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>Pig Gastric H,K-ATPase</name>
                <oligomeric_state>One alpha and one beta chain of HK-ATPase</oligomeric_state>
                <number_unique_components>1</number_unique_components>
                <molecular_weight>
                    <theoretical units="MDa">0.15</theoretical>
                </molecular_weight>
            </sample_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name synonym="H+,K+-ATPase">POTASSIUM-TRANSPORTING ATPASE</name>
                <natural_source database="NCBI">
                    <organism ncbi="9823">Sus scrofa</organism>
                    <synonym_organism>Pig</synonym_organism>
                    <tissue>stomach</tissue>
                    <cellular_location>Plasma membrane</cellular_location>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.15</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <oligomeric_state>Dimer</oligomeric_state>
                <recombinant_exp_flag>false</recombinant_exp_flag>
                <recombinant_expression database="NCBI" />
                <sequence>
                    <external_references type="GO">GO:0006754</external_references>
                    <external_references type="INTERPRO">IPR008250</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>electronCrystallography</method>
            <aggregation_state>twoDArray</aggregation_state>
            <specimen_preparation_list>
                <crystallography_preparation preparation_id="1">
                    <concentration units="mg/mL">8</concentration>
                    <buffer>
                        <ph>4.8</ph>
                        <details>20mM propionate, 1mM ADP, 3mM DTT, ph4.8-4.9 adjusted by Tris, 1mM MgCl2, 1mM AlCl3, 4mM NaF, 10mM KCl</details>
                    </buffer>
                    <grid>
                        <details>Molybdenum grid</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>NITROGEN</cryogen_name>
                        <instrument>LEICA KF80</instrument>
                        <details>The grids were blotted with filter paper and fast frozen into liquid nitrogen</details>
                    </vitrification>
                    <details>Crystals grown by dialysis</details>
                    <crystal_formation>
                        <details>Crystals grown by dialysis</details>
                    </crystal_formation>
                </crystallography_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <crystallography_microscopy microscopy_id="1">
                    <microscope>JEOL KYOTO-3000SFF</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">1.6</nominal_cs>
                    <nominal_defocus_min units="&#181;m">0.67</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">3.88</nominal_defocus_max>
                    <nominal_magnification>40000.0</nominal_magnification>
                    <calibrated_magnification>39500.0</calibrated_magnification>
                    <specimen_holder_model>JEOL</specimen_holder_model>
                    <date>2012-02-15</date>
                    <image_recording_list>
                        <image_recording>
                            <film_or_detector_model category="FILM">KODAK SO-163 FILM</film_or_detector_model>
                            <digitization_details>
                                <scanner>ZEISS SCAI</scanner>
                                <sampling_interval units="&#181;m">7</sampling_interval>
                            </digitization_details>
                            <number_real_images>278</number_real_images>
                            <bits_per_pixel>12.</bits_per_pixel>
                        </image_recording>
                    </image_recording_list>
                    <specimen_holder>Helium cooled</specimen_holder>
                    <tilt_angle_min>-60</tilt_angle_min>
                    <tilt_angle_max>60</tilt_angle_max>
                    <tilt_series>
                        <axis1>
                            <min_angle units="deg">-60</min_angle>
                            <max_angle units="deg">60</max_angle>
                        </axis1>
                    </tilt_series>
                </crystallography_microscopy>
            </microscopy_list>
            <crystallography_processing image_processing_id="1">
                <details>Images were processed using MRC suite.</details>
                <final_reconstruction>
                    <resolution res_type="BY AUTHOR" units="&#8491;">8.0</resolution>
                    <software_list>
                        <software>
                            <name>MRC</name>
                        </software>
                    </software_list>
                </final_reconstruction>
                <crystal_parameters>
                    <unit_cell>
                        <a units="&#8491;">141.0</a>
                        <b units="&#8491;">110.6</b>
                        <c units="&#8491;">320.0</c>
                        <gamma units="deg">90.0</gamma>
                        <alpha units="deg">90.0</alpha>
                        <beta units="deg">90.0</beta>
                    </unit_cell>
                    <plane_group>P 2 21 21</plane_group>
                </crystal_parameters>
                <ctf_correction>
                    <details>Each image</details>
                </ctf_correction>
            </crystallography_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="2802">
        <file>emd_2220.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>61</col>
            <row>73</row>
            <sec>161</sec>
        </dimensions>
        <origin>
            <col>-30</col>
            <row>-36</row>
            <sec>-80</sec>
        </origin>
        <spacing>
            <x>61</x>
            <y>73</y>
            <z>161</z>
        </spacing>
        <cell>
            <a units="&#8491;">134.5609</a>
            <b units="&#8491;">119.4563</b>
            <c units="&#8491;">322.0</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>Y</fast>
            <medium>X</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-6.25960016</minimum>
            <maximum>6.88040018</maximum>
            <average>-0.00338815</average>
            <std>0.99191403</std>
        </statistics>
        <pixel_spacing>
            <x units="&#8491;">1.8433</x>
            <y units="&#8491;">1.9583</y>
            <z units="&#8491;">2.0000</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>1.2</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <annotation_details>Reconstruction of H,K-ATPase with bound K</annotation_details>
        <details>::::EMDATABANK.org::::EMD-2220::::</details>
    </map>
</emd>