<?xml version='1.0' encoding='utf-8'?>
<emd emdb_id="EMD-12639" version="3.0.2.7" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://github.com/emdb-empiar/emdb-schemas/blob/master/v3/v3_0_2_7/emdb.xsd">
    <admin>
        <current_status>
            <date>2021-12-15</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2021-03-19</deposition>
            <header_release>2021-12-08</header_release>
            <map_release>2021-12-08</map_release>
            <update>2021-12-15</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Medical Research Council (MRC, United Kingdom)</funding_body>
                <code>MRC_UP_A025_1011</code>
                <country>United Kingdom</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Wellcome Trust</funding_body>
                <code>WT210711</code>
                <country>United Kingdom</country>
            </grant_reference>
        </grant_support>
        <title>In situ subtomogram average of 13 protofilament microtubule from Mus musculus DRG axons</title>
        <authors_list>
            <author>Foster HE</author>
            <author>Ventura Santos C</author>
            <author>Carter AP</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0002-4691-5746" order="1">Foster HE</author>
                    <author ORCID="0000-0002-4406-5151" order="2">Ventura Santos C</author>
                    <author ORCID="0000-0001-7292-5430" order="3">Carter AP</author>
                    <title>A cryo-ET survey of microtubules and intracellular compartments in mammalian axons.</title>
                    <journal_abbreviation>J.Cell Biol.</journal_abbreviation>
                    <country>US</country>
                    <volume>221</volume>
                    <year>2022</year>
                    <external_references type="PUBMED">34878519</external_references>
                    <external_references type="DOI">doi:10.1083/jcb.202103154</external_references>
                    <external_references type="ISSN">1540-8140</external_references>
                    <external_references type="CSD">2019</external_references>
                    <external_references type="ASTM">JCLBA3</external_references>
                </journal_citation>
            </primary_citation>
            <secondary_citation>
                <journal_citation published="true">
                    <author order="4">Foster HE</author>
                    <author order="5">Carter AP</author>
                    <title>A cryo-ET survey of intracellular compartments within mammalian axons</title>
                    <journal_abbreviation>Biorxiv</journal_abbreviation>
                    <country>US</country>
                    <year>2021</year>
                    <external_references type="DOI">doi:10.1101/2021.03.29.437454</external_references>
                </journal_citation>
            </secondary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-12639</emdb_id>
                <relationship>
                    <other>associated EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>In situ subtomogram average of 13 protofilament microtubule from Mus musculus DRG axons</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>In situ subtomogram average of 13 protofilament microtubule from Mus musculus DRG axons</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="10090">Mus musculus</organism>
                    <organ>Neurons</organ>
                    <tissue>Dorsal root ganglion</tissue>
                    <organelle>microtubule cytoskeleton</organelle>
                    <cellular_location>axoplasm</cellular_location>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>subtomogramAveraging</method>
            <aggregation_state>cell</aggregation_state>
            <specimen_preparation_list>
                <subtomogram_averaging_preparation preparation_id="1">
                    <buffer>
                        <ph>7.4</ph>
                    </buffer>
                    <grid>
                        <model>Quantifoil R3.5/1</model>
                        <material>GOLD</material>
                        <mesh>200</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>CONTINUOUS</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>PLASMA CLEANING</type>
                            <atmosphere>OTHER</atmosphere>
                        </pretreatment>
                        <details>Grids were additionally coated in 0.1mg/mL poly-L-lysine then 0.01mg/mL laminin before cell plating</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">310</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>Manual blot for 3 s before plunging. </details>
                    </vitrification>
                    <details>Microtubules in axons of adult DRG neurons grown for 7 days in vitro</details>
                </subtomogram_averaging_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <subtomogram_averaging_microscopy microscopy_id="1">
                    <microscope>FEI TITAN 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>
                    <c2_aperture_diameter units="µm">50.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">3.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">5.0</nominal_defocus_max>
                    <nominal_magnification>53000.0</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <specialist_optics>
                        <energy_filter>
                            <name>GIF Bioquantum</name>
                            <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>
                                <dimensions>
                                    <width units="pixel">3710</width>
                                    <height units="pixel">3838</height>
                                </dimensions>
                                <frames_per_image>1-10</frames_per_image>
                            </digitization_details>
                            <average_exposure_time units="s">1.7</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">1.85</average_electron_dose_per_image>
                            <details>61 images per tilt series with 112.85 e/A2 total dose.</details>
                        </image_recording>
                    </image_recording_list>
                </subtomogram_averaging_microscopy>
            </microscopy_list>
            <subtomogram_averaging_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>C1</point_group>
                    </applied_symmetry>
                    <algorithm>BACK PROJECTION</algorithm>
                    <resolution res_type="BY AUTHOR" units="Å">12.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0</version>
                            <processing_details>postprocess</processing_details>
                        </software>
                    </software_list>
                    <details>Particles were aligned together at bin4. Half maps were generated at bin4 and independently aligned at bin2 and bin1.</details>
                    <number_subtomograms_used>64528</number_subtomograms_used>
                </final_reconstruction>
                <extraction>
                    <number_tomograms>39</number_tomograms>
                    <number_images_used>476268</number_images_used>
                    <reference_model>average of all particles (tube-shape)</reference_model>
                    <method>Dynamo filament extraction</method>
                    <software_list>
                        <software>
                            <name>IMOD</name>
                            <version>4.10.32</version>
                            <processing_details>model</processing_details>
                        </software>
                        <software>
                            <name>Dynamo</name>
                            <version>1.1.333</version>
                            <processing_details>particle position determination</processing_details>
                        </software>
                    </software_list>
                    <details>Paths of microtubules were modelled in IMOD (version 4.10.32). After importing into Dynamo, initial particle positions were determined using the 'filamentWithTorsion' model workflow. Helical symmetry was applied at the particle level and subvolumes were extracted using subTOM.</details>
                </extraction>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>NOVACTF</name>
                            <version>1.0.0</version>
                        </software>
                        <software>
                            <name>IMOD</name>
                            <version>4.10.32</version>
                        </software>
                    </software_list>
                    <details>Defoci were estimated with CTFPLOTTER (IMOD version 4.10.32). CTF correction was done with novaCTF.</details>
                </ctf_correction>
                <final_angle_assignment>
                    <type>OTHER</type>
                    <details>Alignment, classification and averaging was performed in subTOM (1.1.5)</details>
                </final_angle_assignment>
            </subtomogram_averaging_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="28312">
        <file>emd_12639.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>192</col>
            <row>192</row>
            <sec>192</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>192</x>
            <y>192</y>
            <z>192</z>
        </spacing>
        <cell>
            <a units="Å">528.0</a>
            <b units="Å">528.0</b>
            <c units="Å">528.0</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>-0.24335557</minimum>
            <maximum>0.33154163</maximum>
            <average>-0.00021993526</average>
            <std>0.063600354</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">2.75</x>
            <y units="Å">2.75</y>
            <z units="Å">2.75</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.0719</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-12639::::</label>
        <annotation_details>microtubule structure from mouse DRG axons</annotation_details>
    </map>
    <interpretation>
        <segmentation_list>
            <segmentation>
                <file>emd_12639_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="28312">
                <file>emd_12639_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>192</col>
                    <row>192</row>
                    <sec>192</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>192</x>
                    <y>192</y>
                    <z>192</z>
                </spacing>
                <cell>
                    <a units="Å">528.0</a>
                    <b units="Å">528.0</b>
                    <c units="Å">528.0</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>-0.26428187</minimum>
                    <maximum>0.33655053</maximum>
                    <average>0.00010829941</average>
                    <std>0.0663164</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">2.75</x>
                    <y units="Å">2.75</y>
                    <z units="Å">2.75</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-12639::::</label>
            </half_map>
            <half_map format="CCP4" size_kbytes="28312">
                <file>emd_12639_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>192</col>
                    <row>192</row>
                    <sec>192</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>192</x>
                    <y>192</y>
                    <z>192</z>
                </spacing>
                <cell>
                    <a units="Å">528.0</a>
                    <b units="Å">528.0</b>
                    <c units="Å">528.0</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>-0.26307026</minimum>
                    <maximum>0.3320153</maximum>
                    <average>0.000120509765</average>
                    <std>0.06462538</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">2.75</x>
                    <y units="Å">2.75</y>
                    <z units="Å">2.75</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-12639::::</label>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>