<?xml version="1.0" encoding="UTF-8"?>
<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-14974">
    <admin>
        <current_status>
            <date>2024-03-27</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2022-05-12</deposition>
            <header_release>2023-02-08</header_release>
            <map_release>2023-02-08</map_release>
            <update>2024-03-27</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Agence Nationale de la Recherche (ANR)</funding_body>
                <code>ANR-16-CE11-0025</code>
                <country>France</country>
            </grant_reference>
        </grant_support>
        <title>Cryo-EM structure of Mycobacterium tuberculosis RNA polymerase holoenzyme dimer comprising sigma factor SigB, conformation 2</title>
        <authors_list>
            <author ORCID="0000-0003-3124-7586">Brodolin K</author>
        </authors_list>
        <keywords>DNA-dependent RNA polymerase, alternative sigma, TRANSCRIPTION</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0002-4701-7788" order="1">Morichaud Z</author>
                    <author ORCID="0000-0002-2929-6306" order="2">Trapani S</author>
                    <author order="3">Vishwakarma RK</author>
                    <author order="4">Chaloin L</author>
                    <author ORCID="0000-0002-6348-5311" order="5">Lionne C</author>
                    <author order="6">Lai-Kee-Him J</author>
                    <author ORCID="0000-0002-3354-9513" order="7">Bron P</author>
                    <author ORCID="0000-0003-3124-7586" order="8">Brodolin K</author>
                    <title>Structural basis of the mycobacterial stress-response RNA polymerase auto-inhibition via oligomerization.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>14</volume>
                    <first_page>484</first_page>
                    <last_page>484</last_page>
                    <year>2023</year>
                    <external_references type="PUBMED">36717560</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-023-36113-y</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
            <secondary_citation>
                <journal_citation published="true">
                    <author order="9">Morichaud Z</author>
                    <author order="10">Trapani S</author>
                    <author order="11">Vishwakarma R</author>
                    <author order="12">Chaloin L</author>
                    <author order="13">Lionne C</author>
                    <author order="14">Lai-Kee-Him J</author>
                    <author order="15">Bron P</author>
                    <author order="16">Brodolin K</author>
                    <title>Structural basis of the mycobacterial stress-response RNA polymerase auto-inhibition via oligomerization</title>
                    <journal_abbreviation>Biorxiv</journal_abbreviation>
                    <country>US</country>
                    <year>2022</year>
                    <external_references type="DOI">doi:10.1101/2022.07.04.498644</external_references>
                    <external_references type="ISSN">2692-8205</external_references>
                </journal_citation>
            </secondary_citation>
            <secondary_citation>
                <journal_citation published="true">
                    <author order="17">Hu Y</author>
                    <author order="18">Morichaud Z</author>
                    <author order="19">Perumal AS</author>
                    <author order="20">Roquet-Baneres F</author>
                    <author order="21">Brodolin K</author>
                    <title>Mycobacterium RbpA cooperates with the stress-response sigma-B subunit of RNA polymerase in promoter DNA unwinding.</title>
                    <journal_abbreviation>Nucleic Acids Res</journal_abbreviation>
                    <country>UK</country>
                    <volume>42</volume>
                    <first_page>10399</first_page>
                    <last_page>10408</last_page>
                    <year>2014</year>
                    <external_references type="PUBMED">25122744</external_references>
                    <external_references type="DOI">doi:10.1093/nar/gku742</external_references>
                    <external_references type="ISSN">1362-4962</external_references>
                    <external_references type="CSD">0389</external_references>
                    <external_references type="ASTM">NARHAD</external_references>
                </journal_citation>
            </secondary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-14378</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>the same complex in conformation 1</details>
            </emdb_reference>
        </emdb_list>
    </crossreferences>
    <sample>
        <name>RNA polymerase holoenzyme dimer with sigma factor sigB, conformation 2</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>RNA polymerase holoenzyme dimer with sigma factor sigB, conformation 2</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>4</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>5</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>6</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>RNA polymerase holoenzyme assembled from individually expressed RNA polymerase core and sigma factor sigB</details>
                <natural_source database="NCBI">
                    <organism ncbi="83332">Mycobacterium tuberculosis H37Rv</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.8</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>DNA-directed RNA polymerase subunit alpha</name>
                <natural_source database="NCBI">
                    <organism ncbi="83332">Mycobacterium tuberculosis H37Rv</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MLISQRPTLSEDVLTDNRSQFVIEPLEPGFGYTLGNSLRRTLLSSIPGAAVTSIRIDGVLHEFTTVPGVKEDVTEIILNLKSLVVSSEEDEPVTMYLRKQGPGEVTAGDIVPPAGVTVHNPGMHIATLNDKGKLEVELVVERGRGYVPAVQNRASGAEIGRIPVDSIYSPVLKVTYKVDATRVEQRTDFDKLILDVETKNSISPRDALASAGKTLVELFGLARELNVEAEGIEIGPSPAEADHIASFALPIDDLDLTVRSYNCLKREGVHTVGELVARTESDLLDIRNFGQKSIDEVKIKLHQLGLSLKDSPPSFDPSEVAGYDVATGTWSTEGAYDEQDYAETEQL</string>
                    <external_references type="UNIPROTKB">P9WGZ1</external_references>
                </sequence>
                <ec_number>2.7.7.6</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>DNA-directed RNA polymerase subunit alpha</name>
                <natural_source database="NCBI">
                    <organism ncbi="83332">Mycobacterium tuberculosis H37Rv</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MLISQRPTLSEDVLTDNRSQFVIEPLEPGFGYTLGNSLRRTLLSSIPGAAVTSIRIDGVLHEFTTVPGVKEDVTEIILNLKSLVVSSEEDEPVTMYLRKQGPGEVTAGDIVPPAGVTVHNPGMHIATLNDKGKLEVELVVERGRGYVPAVQNRASGAEIGRIPVDSIYSPVLKVTYKVDATRVEQRTDFDKLILDVETKNSISPRDALASAGKTLVELFGLARELNVEAEGIEIGPSPAEADHIASFALPIDDLDLTVRSYNCLKREGVHTVGELVARTESDLLDIRNFGQKSIDEVKIKLHQLGLSLKDSPPSFDPSEVAGYDVATGTWSTEGAYDEQDYAETEQL</string>
                    <external_references type="UNIPROTKB">P9WGZ1</external_references>
                </sequence>
                <ec_number>2.7.7.6</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>DNA-directed RNA polymerase subunit beta</name>
                <natural_source database="NCBI">
                    <organism ncbi="83332">Mycobacterium tuberculosis H37Rv</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MLISQRPTLSEDVLTDNRSQFVIEPLEPGFGYTLGNSLRRTLLSSIPGAAVTSIRIDGVLHEFTTVPGVKEDVTEIILNLKSLVVSSEEDEPVTMYLRKQGPGEVTAGDIVPPAGVTVHNPGMHIATLNDKGKLEVELVVERGRGYVPAVQNRASGAEIGRIPVDSIYSPVLKVTYKVDATRVEQRTDFDKLILDVETKNSISPRDALASAGKTLVELFGLARELNVEAEGIEIGPSPAEADHIASFALPIDDLDLTVRSYNCLKREGVHTVGELVARTESDLLDIRNFGQKSIDEVKIKLHQLGLSLKDSPPSFDPSEVAGYDVATGTWSTEGAYDEQDYAETEQL</string>
                    <external_references type="UNIPROTKB">P9WGY9</external_references>
                </sequence>
                <ec_number>2.7.7.6</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>DNA-directed RNA polymerase subunit beta'</name>
                <natural_source database="NCBI">
                    <organism ncbi="83332">Mycobacterium tuberculosis H37Rv</organism>
                </natural_source>
                <details>contains C-terminal 6xHis-tag</details>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>VNFFDELRIGLATAEDIRQWSYGEVKKPETINYRTLKPEKDGLFCEKIFGPTRDWECYCGKYKRVRFKGIICERCGVEVTRAKVRRERMGHIELAAPVTHIWYFKGVPSRLGYLLDLAPKDLEKIIYFAAYVITSVDEEMRHNELSTLEAEMAVERKAVEDQRDGELEARAQKLEADLAELEAEGAKADARRKVRDGGEREMRQIRDRAQRELDRLEDIWSTFTKLAPKQLIVDENLYRELVDRYGEYFTGAMGAESIQKLIENFDIDAEAESLRDVIRNGKGQKKLRALKRLKVVAAFQQSGNSPMGMVLDAVPVIPPELRPMVQLDGGRFATSDLNDLYRRVINRNNRLKRLIDLGAPEIIVNNEKRMLQESVDALFDNGRRGRPVTGPGNRPLKSLSDLLKGKQGRFRQNLLGKRVDYSGRSVIVVGPQLKLHQCGLPKLMALELFKPFVMKRLVDLNHAQNIKSAKRMVERQRPQVWDVLEEVIAEHPVLLNRAPTLHRLGIQAFEPMLVEGKAIQLHPLVCEAFNADFDGDQMAVHLPLSAEAQAEARILMLSSNNILSPASGRPLAMPRLDMVTGLYYLTTEVPGDTGEYQPASGDHPETGVYSSPAEAIMAADRGVLSVRAKIKVRLTQLRPPVEIEAELFGHSGWQPGDAWMAETTLGRVMFNELLPLGYPFVNKQMHKKVQAAIINDLAERYPMIVVAQTVDKLKDAGFYWATRSGVTVSMADVLVPPRKKEILDHYEERADKVEKQFQRGALNHDERNEALVEIWKEATDEVGQALREHYPDDNPIITIVDSGATGNFTQTRTLAGMKGLVTNPKGEFIPRPVKSSFREGLTVLEYFINTHGARKGLADTALRTADSGYLTRRLVDVSQDVIVREHDCQTERGIVVELAERAPDGTLIRDPYIETSAYARTLGTDAVDEAGNVIVERGQDLGDPEIDALLAAGITQVKVRSVLTCATSTGVCATCYGRSMATGKLVDIGEAVGIVAAQSIGEPGTQLTMRTFHQGGVGEDITGGLPRVQELFEARVPRGKAPIADVTGRVRLEDGERFYKITIVPDDGGEEVVYDKISKRQRLRVFKHEDGSERVLSDGDHVEVGQQLMEGSADPHEVLRVQGPREVQIHLVREVQEVYRAQGVSIHDKHIEVIVRQMLRRVTIIDSGSTEFLPGSLIDRAEFEAENRRVVAEGGEPAAGRPVLMGITKASLATDSWLSAASFQETTRVLTDAAINCRSDKLNGLKENVIIGKLIPAGTGINRYRNIAVQPTEEARAAAYTIPSYEDQYYSPDFGAATGAAVPLDDYGYSDYRHHHHHH</string>
                    <external_references type="UNIPROTKB">P9WGY7</external_references>
                </sequence>
                <ec_number>2.7.7.6</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="5">
                <name>DNA-directed RNA polymerase subunit omega</name>
                <natural_source database="NCBI">
                    <organism ncbi="83332">Mycobacterium tuberculosis H37Rv</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSISQSDASLAAVPAVDQFDPSSGASGGYDTPLGITNPPIDELLDRVSSKYALVIYAAKRARQINDYYNQLGEGILEYVGPLVEPGLQEKPLSIALREIHADLLEHTEGE</string>
                    <external_references type="UNIPROTKB">P9WGY5</external_references>
                </sequence>
                <ec_number>2.7.7.6</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="6">
                <name>RNA polymerase sigma factor SigB</name>
                <natural_source database="NCBI">
                    <organism ncbi="83332">Mycobacterium tuberculosis H37Rv</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MGSSHHHHHHSSGLVPRGSHMADAPTRATTSRVDSDLDAQSPAADLVRVYLNGIGKTALLNAAGEVELAKRIEAGLYAEHLLETRKRLGENRKRDLAAVVRDGEAARRHLLEANLRLVVSLAKRYTGRGMPLLDLIQEGNLGLIRAMEKFDYTKGFKFSTYATWWIRQAITRGMADQSRTIRLPVHLVEQVNKLARIKREMHQHLGREATDEELAAESGIPIDKINDLLEHSRDPVSLDMPVGSEEEAPLGDFIEDAEAMSAENAVIAELLHTDIRSVLATLDEREHQVIRLRFGLDDGQPRTLDQIGKLFGLSRERVRQIERDVMSKLRHGERADRLRSYAS</string>
                    <external_references type="UNIPROTKB">P9WGI5</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">
                    <concentration units="mg/mL">1.4</concentration>
                    <buffer>
                        <ph>7.9</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </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_defocus_min units="µm">0.5</nominal_defocus_min>
                    <nominal_defocus_max units="µm">7.0</nominal_defocus_max>
                    <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>SUPER-RESOLUTION</detector_mode>
                            <number_real_images>3064</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">49.6</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>254380</number_selected>
                </particle_selection>
                <startup_model type_of_model="NONE">
                    <details>ab-into reconstruction</details>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">6.75</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>2.1</version>
                        </software>
                    </software_list>
                    <number_images_used>48593</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>2</number_classes>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="364501">
        <file>emd_14974.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>450</col>
            <row>450</row>
            <sec>450</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>450</x>
            <y>450</y>
            <z>450</z>
        </spacing>
        <cell>
            <a units="Å">495.0</a>
            <b units="Å">495.0</b>
            <c units="Å">495.0</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>-0.5290195</minimum>
            <maximum>1.3410263</maximum>
            <average>-0.0020605747</average>
            <std>0.041922376</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.1</x>
            <y units="Å">1.1</y>
            <z units="Å">1.1</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.26</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-14974::::</label>
        <annotation_details>RNA polymerase dimer conformation 2</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>7PP4</access_code>
                    <chain>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>RIGID BODY FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="364501">
                <file>emd_14974_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>450</col>
                    <row>450</row>
                    <sec>450</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>450</x>
                    <y>450</y>
                    <z>450</z>
                </spacing>
                <cell>
                    <a units="Å">495.0</a>
                    <b units="Å">495.0</b>
                    <c units="Å">495.0</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>-2.096111</minimum>
                    <maximum>1.926165</maximum>
                    <average>0.00042607295</average>
                    <std>0.2252473</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.1</x>
                    <y units="Å">1.1</y>
                    <z units="Å">1.1</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-14974::::</label>
                <annotation_details>half map A</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="364501">
                <file>emd_14974_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>450</col>
                    <row>450</row>
                    <sec>450</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>450</x>
                    <y>450</y>
                    <z>450</z>
                </spacing>
                <cell>
                    <a units="Å">495.0</a>
                    <b units="Å">495.0</b>
                    <c units="Å">495.0</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>-2.063528</minimum>
                    <maximum>1.820493</maximum>
                    <average>0.00039974472</average>
                    <std>0.22676614</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">1.1</x>
                    <y units="Å">1.1</y>
                    <z units="Å">1.1</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-14974::::</label>
                <annotation_details>half map B</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
