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<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_9_2/emdb.xsd" version="3.0.9.2" emdb_id="EMD-8854">
    <admin>
        <current_status>
            <date>2024-03-13</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2017-07-24</deposition>
            <header_release>2017-08-23</header_release>
            <map_release>2018-01-17</map_release>
            <update>2024-03-13</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Science Foundation (NSF, United States)</funding_body>
                <code>MCB-1515260</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Structure of the major capsid protein and the capsid stabilizing protein of the marine siphovirus TW1</title>
        <authors_list>
            <author>Wang Z</author>
            <author>Rossmann MG</author>
        </authors_list>
        <keywords>Major Capsid Protein, Capsid Stabilizing Protein, HK 97 fold, Decoration Protein, VIRUS</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Wang Z</author>
                    <author order="2">Hardies SC</author>
                    <author order="3">Fokine A</author>
                    <author order="4">Klose T</author>
                    <author order="5">Jiang W</author>
                    <author order="6">Cho BC</author>
                    <author order="7">Rossmann MG</author>
                    <title>Structure of the Marine Siphovirus TW1: Evolution of Capsid-Stabilizing Proteins and Tail Spikes.</title>
                    <journal_abbreviation>Structure</journal_abbreviation>
                    <country>UK</country>
                    <volume>26</volume>
                    <first_page>238</first_page>
                    <last_page>248.e3</last_page>
                    <year>2018</year>
                    <external_references type="PUBMED">29290487</external_references>
                    <external_references type="DOI">doi:10.1016/j.str.2017.12.001</external_references>
                    <external_references type="ISSN">1878-4186</external_references>
                    <external_references type="CSD">2005</external_references>
                    <external_references type="ASTM">STRUE6</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>5wk1</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Pseudoalteromonas phage TW1</name>
        <supramolecule_list>
            <virus_supramolecule supramolecule_id="1">
                <name>Pseudoalteromonas phage TW1</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <sci_species_name ncbi="1366055">Pseudoalteromonas phage TW1</sci_species_name>
                <virus_type>VIRION</virus_type>
                <virus_isolate>STRAIN</virus_isolate>
                <virus_enveloped>false</virus_enveloped>
                <virus_empty>false</virus_empty>
            </virus_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Capsid Stabilizing Protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="1366055">Pseudoalteromonas phage TW1</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.015017777</theoretical>
                </molecular_weight>
                <number_of_copies>7</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MANSKNSIFVGGAGRVKQTIEGLAQSAFKPGQLLARAAGDAIDVTAKASTTYGNEFLICDDQPQTLGGGTDVAVTAGDTV
QAISVLPGQYVLLSFAATQNVTTKGAAVASNGDGNFKLGNPATEQTFAVTEEIINVTTAGTLVLCRAI</string>
                    <external_references type="UNIPROTKB">S5MS27</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Major Capsid Protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="1366055">Pseudoalteromonas phage TW1</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.039047965</theoretical>
                </molecular_weight>
                <number_of_copies>7</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSIHFDFKNKQGKELLALNRQWNELSGYRAHAFNESVNMLNNVGETFGVNGANAMQTNMQRVDEMYRLVDSTGTGEDRDW
GNQTLLGRLLSQAQTVSIGKKVIESRRYSEAGRINRSMSGQTDIDMDKTKSSYQKMVIPVFDGAYGRDFRDYEAMRSEML
PALAEDSEEIEFTLLDDVNDYLWNGDAKLKVDTAVWGGLKADASVAAYSLGADLTTATEAQVVAELLALLDVLRITNKKS
GPFELYISPQIMSNWQKLAGANTNGFMNIMAAVRALIPEFSVVEADSALQGNQVLCSVVGTRGLHAKIGMMMSSYQVPRV
MHNDPYQFVKWFAAGFQSNNSFSGLKSTVYGS</string>
                    <external_references type="UNIPROTKB">S5M825</external_references>
                </sequence>
            </protein_or_peptide>
        </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">
                    <buffer>
                        <ph>7.5</ph>
                        <component>
                            <concentration units="mM">50.0</concentration>
                            <formula>C4H11NO3</formula>
                            <name>Tris</name>
                        </component>
                        <component>
                            <concentration units="mM">100.0</concentration>
                            <formula>NaCl</formula>
                            <name>sodium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">8.0</concentration>
                            <formula>MgSO4</formula>
                            <name>magnesium sulfate</name>
                        </component>
                        <details>50 mM Tris, pH 7.5, 100 mM NaCl, 8 mM MgSO4</details>
                    </buffer>
                    <grid>
                        <model>Ted Pella Inc, Lacey Carbon</model>
                        <mesh>400</mesh>
                        <support_film film_type_id="1">
                            <film_topology>CONTINUOUS</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">60</time>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">75</chamber_humidity>
                        <chamber_temperature units="K">298</chamber_temperature>
                        <instrument>GATAN CRYOPLUNGE 3</instrument>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_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>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">0.5</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.0</nominal_defocus_max>
                    <nominal_magnification>22500.0</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <temperature>
                        <temperature_min units="K">80.0</temperature_min>
                        <temperature_max units="K">80.0</temperature_max>
                    </temperature>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>DIRECT ELECTRON DE-16 (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <average_electron_dose_per_image units="e/Å^2">20.0</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>16216</number_selected>
                </particle_selection>
                <startup_model type_of_model="NONE"/>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>I</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.6</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>jspr</name>
                        </software>
                    </software_list>
                    <number_images_used>8663</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>RANDOM ASSIGNMENT</type>
                    <software_list>
                        <software>
                            <name>jspr</name>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                    <software_list>
                        <software>
                            <name>jspr</name>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="11943937">
        <file>emd_8854.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>1440</col>
            <row>1440</row>
            <sec>1440</sec>
        </dimensions>
        <origin>
            <col>-720</col>
            <row>-720</row>
            <sec>-720</sec>
        </origin>
        <spacing>
            <x>1440</x>
            <y>1440</y>
            <z>1440</z>
        </spacing>
        <cell>
            <a units="Å">960.48</a>
            <b units="Å">960.48</b>
            <c units="Å">960.48</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>-16.355609999999999</minimum>
            <maximum>21.784884999999999</maximum>
            <average>0.014140712</average>
            <std>1.0399446</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.667</x>
            <y units="Å">0.667</y>
            <z units="Å">0.667</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>4.79</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-8854::::</label>
        <annotation_details>icosahedral reconstruction of marine Siphophage TW1 head</annotation_details>
    </map>
</emd>
