<emd emdb_id="EMD-2095" 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>2012-05-09</deposition>
            <header_release>2012-05-17</header_release>
            <map_release>2012-08-15</map_release>
            <update>2012-09-26</update>
        </key_dates>
        <title>Cryo-electron microscopy reconstruction of doublecortin-stabilised microtubules in absence of kinesin</title>
        <authors_list>
            <author>Liu JS</author>
            <author>Schubert CR</author>
            <author>Fu X</author>
            <author>Fourniol FJ</author>
            <author>Jaiswal JK</author>
            <author>Houdusse A</author>
            <author>Stultz CM</author>
            <author>Moores CA</author>
            <author>Walsh CA</author>
        </authors_list>
        <keywords>doublecortin, microtubule, Microtubule-Associated Protein</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Liu JS</author>
                    <author order="2">Schubert CR</author>
                    <author order="3">Fu X</author>
                    <author order="4">Fourniol FJ</author>
                    <author order="5">Jaiswal JK</author>
                    <author order="6">Houdusse A</author>
                    <author order="7">Stultz CM</author>
                    <author order="8">Moores CA</author>
                    <author order="9">Walsh CA</author>
                    <title>Molecular basis for specific regulation of neuronal kinesin-3 motors by doublecortin family proteins.</title>
                    <journal>MOLECULAR CELL</journal>
                    <volume>47</volume>
                    <first_page>707</first_page>
                    <last_page>721</last_page>
                    <year>2012</year>
                    <external_references type="PUBMED">22857951</external_references>
                    <external_references type="DOI">doi:10.1016/j.molcel.2012.06.025</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>4atu</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Doublecortin-stabilised microtubules</name>
        <supramolecule_list>
            <sample_supramolecule supramolecule_id="1000">
                <name>Doublecortin-stabilised microtubules</name>
                <oligomeric_state>13-protofilament microtubule</oligomeric_state>
                <number_unique_components>3</number_unique_components>
            </sample_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>tubulin alpha-1D chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9913">Bos taurus</organism>
                    <synonym_organism>cattle</synonym_organism>
                    <tissue>brain</tissue>
                    <cellular_location>cytoplasm</cellular_location>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.05</theoretical>
                </molecular_weight>
                <oligomeric_state>heterodimer</oligomeric_state>
                <recombinant_exp_flag>false</recombinant_exp_flag>
                <recombinant_expression database="NCBI" />
                <sequence>
                    <external_references type="INTERPRO">IPR002452</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name synonym="DCX">doublecortin</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                    <synonym_organism>Human</synonym_organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.04</theoretical>
                </molecular_weight>
                <recombinant_exp_flag>true</recombinant_exp_flag>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7108">Spodoptera frugiperda</recombinant_organism>
                    <recombinant_plasmid>pFastBac</recombinant_plasmid>
                </recombinant_expression>
                <sequence>
                    <external_references type="INTERPRO">IPR003533</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>tubulin beta-2B chain</name>
                <natural_source database="NCBI">
                    <organism ncbi="9913">Bos taurus</organism>
                    <synonym_organism>cattle</synonym_organism>
                    <tissue>brain</tissue>
                    <cellular_location>cytoplasm</cellular_location>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.05</theoretical>
                </molecular_weight>
                <oligomeric_state>heterodimer</oligomeric_state>
                <recombinant_exp_flag>false</recombinant_exp_flag>
                <recombinant_expression database="NCBI" />
                <sequence>
                    <external_references type="INTERPRO">IPR013838</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <buffer>
                        <ph>6.8</ph>
                        <details>20mM PIPES, 1mM EGTA, 3mM MgCl2, 1mM TCEP, 0.5mM GTP</details>
                    </buffer>
                    <staining>
                        <type>NEGATIVE</type>
                        <details>cryo-EM</details>
                    </staining>
                    <grid>
                        <details>300 mesh lacey carbon grids</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <instrument>FEI VITROBOT MARK I</instrument>
                    </vitrification>
                </helical_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <helical_microscopy microscopy_id="1">
                    <microscope>FEI TECNAI F20</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">200</acceleration_voltage>
                    <nominal_cs units="mm">2.0</nominal_cs>
                    <nominal_defocus_min units="&#181;m">0.9</nominal_defocus_min>
                    <nominal_defocus_max units="&#181;m">3.6</nominal_defocus_max>
                    <nominal_magnification>50000.0</nominal_magnification>
                    <specimen_holder_model>SIDE ENTRY, EUCENTRIC</specimen_holder_model>
                    <temperature>
                        <temperature_average units="K">93</temperature_average>
                    </temperature>
                    <alignment_procedure>
                        <legacy>
                            <astigmatism>Objective lens astigmatism was corrected at 150,000 times magnification</astigmatism>
                        </legacy>
                    </alignment_procedure>
                    <date>2010-10-01</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>
                            </digitization_details>
                            <average_electron_dose_per_image units="e/&#8491;^2">17</average_electron_dose_per_image>
                            <bits_per_pixel>8.</bits_per_pixel>
                        </image_recording>
                    </image_recording_list>
                </helical_microscopy>
            </microscopy_list>
            <helical_processing image_processing_id="1">
                <details>Particles were aligned using Spider and Frealign (Sindelar and Downing, 2010)</details>
                <final_reconstruction>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="&#8491;">9.2</delta_z>
                            <delta_phi units="deg">27.7</delta_phi>
                        </helical_parameters>
                    </applied_symmetry>
                    <algorithm>OTHER</algorithm>
                    <resolution res_type="BY AUTHOR" units="&#8491;">8.3</resolution>
                    <resolution_method>FSC 0.5 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>SPIDER, FREALIGN</name>
                        </software>
                    </software_list>
                    <details>A sub-selection of approximately 146,000 tubulin dimers (75% of total dataset) went into the final reconstruction</details>
                </final_reconstruction>
                <ctf_correction>
                    <details>done with FREALIGN</details>
                </ctf_correction>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="1376">
        <file>emd_2095.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>85</col>
            <row>41</row>
            <sec>101</sec>
        </dimensions>
        <origin>
            <col>66</col>
            <row>50</row>
            <sec>75</sec>
        </origin>
        <spacing>
            <x>41</x>
            <y>85</y>
            <z>101</z>
        </spacing>
        <cell>
            <a units="&#8491;">238.0</a>
            <b units="&#8491;">114.799995</b>
            <c units="&#8491;">282.8</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>-8.86061192</minimum>
            <maximum>12.475532530000001</maximum>
            <average>0.57322699</average>
            <std>2.0084734</std>
        </statistics>
        <pixel_spacing>
            <x units="&#8491;">2.8</x>
            <y units="&#8491;">2.8</y>
            <z units="&#8491;">2.8</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>1.6</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <annotation_details>Reconstruction of doublecortin-stabilised microtubules in absence of kinesin</annotation_details>
        <details>::::EMDATABANK.org::::EMD-2095::::</details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>2XRP</access_code>
                    <chain>
                        <chain_id>A</chain_id>
                    </chain>
                    <chain>
                        <chain_id>B</chain_id>
                    </chain>
                    <chain>
                        <chain_id>C</chain_id>
                    </chain>
                    <chain>
                        <chain_id>D</chain_id>
                    </chain>
                    <chain>
                        <chain_id>E</chain_id>
                    </chain>
                    <chain>
                        <chain_id>F</chain_id>
                    </chain>
                    <chain>
                        <chain_id>G</chain_id>
                    </chain>
                    <chain>
                        <chain_id>H</chain_id>
                    </chain>
                </initial_model>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
                <software_list>
                    <software>
                        <name>Chimera</name>
                    </software>
                </software_list>
                <details>Protocol: Rigid body</details>
                <target_criteria>cross correlation</target_criteria>
                <refinement_space>REAL</refinement_space>
            </modelling>
            <modelling>
                <initial_model>
                    <access_code>1MJD</access_code>
                </initial_model>
                <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
                <software_list>
                    <software>
                        <name>Chimera, Flex-EM</name>
                    </software>
                </software_list>
                <details>Protocol: flexible fitting. The EM map was zoned around the doublecortin density. The N-DC atomic model (1MJD model 11, aa 38-150) was extended at its C-terminus (aa 151-156) using Chimera. Flexible fitting was performed into the zoned around EM map. The core DC domain (aa 53-129) and the docked W146 region (aa 145-146) were treated as a single rigid body.</details>
                <target_criteria>cross correlation</target_criteria>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>