<?xml version="1.0" encoding="UTF-8"?>
<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://github.com/emdb-empiar/emdb-schemas/blob/master/v3/v3_0_2_2/emdb.xsd" emdb_id="EMD-4944" version="3.0.2.2">
    <admin>
        <current_status>
            <date>2020-12-16</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2019-05-08</deposition>
            <header_release>2020-06-03</header_release>
            <map_release>2020-06-03</map_release>
            <update>2020-12-16</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Research Foundation (Korea)</funding_body>
                <code>2016-K1A1A2912057</code>
                <country>Korea, Republic Of</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Research Foundation (Korea)</funding_body>
                <code>2016R1A2B3006293</code>
                <country>Korea, Republic Of</country>
            </grant_reference>
        </grant_support>
        <title>Cryo-EM 3D map of the N-terminal GFP tagged normal type Huntingtin</title>
        <authors_list>
            <author>Jung T</author>
            <author>Tamo G</author>
            <author>Dal Perraro M</author>
            <author>Hebert H</author>
            <author>Song J</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Jung T</author>
                    <author order="2">Shin B</author>
                    <author order="3">Tamo G</author>
                    <author order="4">Kim H</author>
                    <author order="5">Vijayvargia R</author>
                    <author order="6">Leitner A</author>
                    <author order="7">Marcaida MJ</author>
                    <author order="8">Astorga-Wells J</author>
                    <author order="9">Jung R</author>
                    <author order="10">Aebersold R</author>
                    <author order="11">Peraro MD</author>
                    <author order="12">Hebert H</author>
                    <author order="13">Seong IS</author>
                    <author order="14">Song JJ</author>
                    <title>The Polyglutamine Expansion at the N-Terminal of Huntingtin Protein Modulates the Dynamic Configuration and Phosphorylation of the C-Terminal HEAT Domain.</title>
                    <journal_abbreviation>Structure</journal_abbreviation>
                    <country>UK</country>
                    <volume>28</volume>
                    <first_page>1035</first_page>
                    <last_page>1050.e8</last_page>
                    <year>2020</year>
                    <external_references type="PUBMED">32668197</external_references>
                    <external_references type="DOI">doi:10.1016/j.str.2020.06.008</external_references>
                    <external_references type="ISSN">0969-2126</external_references>
                    <external_references type="CSD">2005</external_references>
                    <external_references type="ASTM">STRUE6</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-4937</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>4937 is a normal Huntingtin without GFP fusion</details>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-4944</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>N-terminal GFP tagged normal type huntingtin</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>N-terminal GFP tagged normal type huntingtin</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>GFP inserted at N-terminal at normal Huntingtin.</details>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <experimental units="MDa">0.35</experimental>
                </molecular_weight>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
                    <recombinant_cell>Sf9 cell</recombinant_cell>
                    <recombinant_plasmid>pFASTBAC1</recombinant_plasmid>
                </recombinant_expression>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_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">0.08</concentration>
                    <buffer>
                        <ph>7.5</ph>
                        <component>
                            <concentration units="mM">150.0</concentration>
                            <formula>NaCl</formula>
                            <name>Sodium Chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <formula>HEPES</formula>
                            <name>4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid</name>
                        </component>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK II</instrument>
                        <details>30 seconds incubation
9 seconds blotting. </details>
                    </vitrification>
                    <details>HTT was mixed with final 0.05% of Octyl glucoside.</details>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI TITAN KRIOS</microscope>
                    <illumination_mode>SPOT SCAN</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">0.8</nominal_defocus_max>
                    <calibrated_magnification>47170.0</calibrated_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <specialist_optics>
                        <phase_plate>VOLTA PHASE PLATE</phase_plate>
                        <energy_filter>
                            <slit_width units="eV">20</slit_width>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <digitization_details>
                                <frames_per_image>2-40</frames_per_image>
                            </digitization_details>
                            <number_real_images>2226</number_real_images>
                            <average_exposure_time units="s">8.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">47.72</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>56538</number_selected>
                    <details>manual picking</details>
                </particle_selection>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>CTFFIND</name>
                            <version>4.0</version>
                        </software>
                    </software_list>
                </ctf_correction>
                <startup_model type_of_model="INSILICO MODEL">
                    <insilico_model>in RELION 3D initial model building</insilico_model>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <point_group>C1</point_group>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">15.3</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1</version>
                        </software>
                    </software_list>
                    <number_images_used>17689</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1</version>
                            <processing_details>3D auto refine</processing_details>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>1</number_classes>
                    <average_number_members_per_class>17689.0</average_number_members_per_class>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="6913">
        <file>emd_4944.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>120</col>
            <row>120</row>
            <sec>120</sec>
        </dimensions>
        <origin>
            <col>3</col>
            <row>3</row>
            <sec>3</sec>
        </origin>
        <spacing>
            <x>120</x>
            <y>120</y>
            <z>120</z>
        </spacing>
        <cell>
            <a units="Å">264.99997</a>
            <b units="Å">264.99997</b>
            <c units="Å">264.99997</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>-0.014368322</minimum>
            <maximum>0.05213319</maximum>
            <average>0.00010867433</average>
            <std>0.0052492046</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">2.208333</x>
            <y units="Å">2.208333</y>
            <z units="Å">2.208333</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.022</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-4944::::</label>
        <annotation_details>The cryo-EM map of the N-terminal GFP tagged normal Huntingtin.</annotation_details>
    </map>
</emd>
