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        <current_status>
            <date>2025-11-19</date>
            <code>REL</code>
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            <revision version="1.0" date="2025-08-27">
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                            <category>citation</category>
                            <category>citation_author</category>
                            <category>em_admin</category>
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        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2024-11-27</deposition>
            <header_release>2025-08-27</header_release>
            <map_release>2025-08-27</map_release>
            <update>2025-11-19</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Wellcome Trust</funding_body>
                <code>214222/Z/18/Z</code>
                <country>United Kingdom</country>
            </grant_reference>
        </grant_support>
        <title>Bacteroides thetaiotaomicron BAM complex</title>
        <authors_list>
            <author>Silale A</author>
            <author>van den Berg B</author>
        </authors_list>
        <keywords>Outer membrane protein biogenesis, Beta-barrel assembly machinery, BAM, MEMBRANE PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0003-3338-2087" order="1">Silale A</author>
                    <author order="2">Madej M</author>
                    <author ORCID="0000-0002-6118-489X" order="3">Mikruta K</author>
                    <author ORCID="0000-0002-5194-447X" order="4">Frey AM</author>
                    <author ORCID="0009-0006-4092-2132" order="5">Hart AJ</author>
                    <author order="6">Basle A</author>
                    <author ORCID="0000-0002-4304-0681" order="7">Scavenius C</author>
                    <author ORCID="0000-0001-9292-9172" order="8">Enghild JJ</author>
                    <author ORCID="0000-0002-5732-700X" order="9">Trost M</author>
                    <author order="10">Hirt RP</author>
                    <author ORCID="0000-0003-1966-8804" order="11">van den Berg B</author>
                    <title>Structure of a distinct beta-barrel assembly machinery complex in the Bacteroidota.</title>
                    <journal_abbreviation>Nat Microbiol</journal_abbreviation>
                    <country>UK</country>
                    <volume>10</volume>
                    <first_page>2845</first_page>
                    <last_page>2859</last_page>
                    <year>2025</year>
                    <external_references type="PUBMED">41034344</external_references>
                    <external_references type="DOI">doi:10.1038/s41564-025-02132-2</external_references>
                    <external_references type="ISSN">2058-5276</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-52200</emdb_id>
                <relationship>
                    <other>focused EM volume</other>
                </relationship>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-52202</emdb_id>
                <relationship>
                    <other>consensus EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>9hj3</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
        <other_db_list>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-52200</accession_id>
                <content_type>focused EM volume</content_type>
            </db_reference>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-52202</accession_id>
                <content_type>consensus EM volume</content_type>
            </db_reference>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-52209</accession_id>
                <content_type>associated EM volume</content_type>
                <details>Bacteroides thetaiotaomicron BAM complex</details>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>Bacteroides thetaiotaomicron BAM complex</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Bacteroides thetaiotaomicron BAM complex</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>
                        <macromolecule_id>7</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.325</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Outer membrane protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.101527664</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MHYRISFIFVTFICLFCFAATGFTQNTNTDEDSKPVILYSGTPKKYEIADIKVEGVKNYEDYVLIGLSGLSVGQTITVPG
DEITGAIKRYWKHGLFSNVQITAEKIEGNKIWLKISLTQRPRIADVRYHGVKKSERTDFESKLGMVKGMQITPNTVDRAK
TLIKRYFDDKGFKNAEVIIAQKDDPSNENQVIVDIDIDKKEKIKVHAIHITGNSAIKTSKLKKVMKKTNEKGKLLNLFRT
KKFVPENFEADKQLIIDKYNELGYRDAMIVKDSVAQYDEKTVDVYMDIDEGQKYYLRNVTWVGNTLYPSEQLNFLLRMKK
GDVYNQKLLGERTSTDDDAIGNLYYNNGYLFYNLDPVEVNIVGDSIDLEMRIYEGRQATINKINISGNDRLYENVVRREL
RIRPGQLFSKDDLMRSLREIQQMGHFDPEKLQPDIQPDPVNGTVDIGLPLTSKANDQVEFSAGWGQTGIIGKLSLKFTNF
SVANLLRPGENYRGILPQGDGQTLTISGQTNAKYYQSYSISFFDPWFGGKRPNSLSVSAFFSVQTDISSRYYNSSYFNNY
YNSMYSGYGGYGMYNYGNYNNYENYYDPDKSIKMWGLSLGWGKRLKWPDDYFTLSAELAYQRYNLKDWQYFPVTNGKCND
LSLSLTLARNSIDNPIFPRTGSDFSLSVQLTPPYSLFDGKDYKGYFYDPTDDRGITQDNMNKLHRWVEYHKWKFKAKTYT
PLMDYIAHPKCLVLMTRTEFGLLGHYNKYKKSPFGTFDVGGDGMTGYSSYATESIALRGYENSSLTPYGKEGYAYARLGI
ELRYPLMLETSTNIYVLGFLEAGNAWHDISKFNPFDLKRSAGIGVRIFLPMIGMMGIDWGYGFDKINGSKEYGGSQFHFI
LGQEF</string>
                    <external_references type="UNIPROTKB">Q8A1E1</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Lipoprotein protein, putative</name>
                <natural_source database="NCBI">
                    <organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.031415555</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MKKNIIITLLAAASLTSCGEYNKLLKSTDYEYKYEAAKNYFAKGQYNRSATLLNELITILKGTDKAEESLYMLGMSYYNQ
KDYQTAAQTFITYFNTYPRGTFTELARFHAGKSLFLDTPEPRLDQSSTYQAIQQLQMFMEYFPNSTKKQEAQDMIFALQD
KLVLKELYSAKLYYNLGNYLGNNYESCVITAQNALKDYPYTDYREELSILILRARHEMAIYSVEDKKMDRYRETIDEYYA
FKNEFPESKYLKEAEKIFNESQKVIKD</string>
                    <external_references type="UNIPROTKB">Q8AA92</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Outer membrane protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.047860691</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MVGFKHTIWALLLMMVTGTAIAQNNTNSPYTRYGYGDLSDQSFGNSKAMGGIAFGLRDGAQINPTNPASYTAIDSLTFLF
EGGVSLQNMNISGGGLKLNAKNASFDYLAMQFRLAPWMAMSVGLLPYSNVGYTVSDSQTTDNGLAYSRSFTGDGGLHQMY
VGAGVKVLKNLSVGVNASYFWGDITRTRGMFYPGTSSYDSYQRKMVTSISDYKLDFGAQYTQALNKKSSLTIGAVYSPKH
KLNNDYTSIVIMGASSSSYGTEYKDVLDATFELPNTFGVGFTYNYDKRLTVGADYSLQQWSKTNFGVVTSDENVRQDFNE
TFTYCDRTKISVGAEYIPNLIGRSYFAHIKYRLGAYYTTPYYKIDGKKASREYGVTAGFGLPVPRSRSILSISGQFVRVK
GLETNMVNENIFRVSIGLTFNERWFFKRRVE</string>
                    <external_references type="UNIPROTKB">Q89ZL0</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>DUF6242 domain-containing protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.055108051</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MRIKFLSIIASFFMVSFVITSCLDNDNEVNYSPDATIRAFELDTIGYGVNYKFTIDQVSRLIYNVDSLPVNADTIINSIL
IKTLTTASGIVTMKDQNDQDSIVNINDSIDLTKYVNATEKNNFLVLKVWAPNMEVQNEYKVNIRMHTMVPDSLSWGKDPI
ANNPVRNTAEKQKVVTLGDKILLFAQNNEIYSTAIPAGSPTDRLNYGQKWDKETTGKLPDGADVTSIIRFVDKLYLLTKN
KEVYNSNDGLTWTKDEVLNSDGVSVTNLITSFSDSDGSNHKKINGIAGIVEINGEKYFSFAEKDVTWEKDIDKLTVVPAE
FPINNLSADVYATESGTLNAIVVGNTEDGLDNDTATVVWASEDGKAWIPMEIPSNNNCPKLVDPSIIHYNDAFYICGKET
KDDAKGFQKFYTSPTLLVWKGVDRMFMLPGILPPVKLEGGVTQHPSLHESSFKGKEVNYTMVVDRNHYIWMVGGQGIDKI
WRGRVNKLGFLIQ</string>
                    <external_references type="UNIPROTKB">Q8A1D9</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="5">
                <name>Peptidyl-prolyl cis-trans isomerase</name>
                <natural_source database="NCBI">
                    <organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.021884557</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSKKIYLFSLVLLALAFVSCSETEEVGKYDNWRARNEAFIDSLANVYATASGRGGLERIEMLTAPGNYIYYKEMEPMTDH
VVKAGNPKYTDYVKVYYKGTNILGEYFDGNFKGDNPVVDGKDPSEGDSPTTIFQVSGVITGWGEVLQRMEVGDRWKVYIP
WDYAYGSSGTTGILGYSALVFDITLLDFANTEAELK</string>
                    <external_references type="UNIPROTKB">Q8A1P7</external_references>
                </sequence>
                <ec_number>5.2.1.8</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="6">
                <name>DUF4827 domain-containing protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.024712709</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MKKLVFLFLSLLAAGGIFQACDDSKTYAEMLEDEKNAVNKFIKDKGIRIISQDEFEKNDTVTNLERNEYVALSDGVYMQI
VDRGSAENKTDTFANNNEICVRYIEEDIMTRDTTCFNVFLEEWGDANQLYTNPAVFRYVAEGSYVYGTFIQMDYYWASYY
QSTAVPAGWLLALPFVRNYAHVRLIVPSKVGHSSAQQYVNPYYYDIWTFSKALN</string>
                    <external_references type="UNIPROTKB">Q8A0S2</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="7">
                <name>DUF4270 domain-containing protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="226186">Bacteroides thetaiotaomicron VPI-5482</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.058264816</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>CDDNTGGLGLGMFPGNDQNIKGKLSTFDVTTESVKTGDIYAKTNIGYIGKFTDETFGTYQAGFLAQLNCPDGLTFPEPYK
EVTDASGNVISATGRMVVDDKDPENKDVTFIKDGNQIIGNIRAVELYLWYDSYFGDSLTACRLSVYELGGNGKETLNLDN
AYYTDINPEDFYDSQNILGTKAYTAVDLSVKDSIRNLSTYVPSVHIAFKEDIATRVGGNILTAARKAKNADKEFNSQLFR
EAFQGIYVKSDYGDGTVLYIDQPQMNVVYKCYATDSITGKKLQKKDGSGKDSTYYSYRVFATTREVIQANQLKNDPERID
ALIKEDKNTYLKSPAGIFTEATLPISDIQNELTGDTLNAVKLTFTNYNQTGDKKFGMAIPSTVMLVRKKFQDSFFKDNKL
SDGVSSYLTSHTSSTNQYVFSNITKLVNACIAEKEEAKKNAGSSWDETKWLQENPDWNKVVLIPVLVTYDSSNTTTGQAN
IIRIQHDLKPGYVRLKGGSLGKTNPDYKLKLEVISTDFGLTTKSN</string>
                    <external_references type="UNIPROTKB">Q89ZS0</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="8">
                <name>N-TRIDECANOIC ACID</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000214344</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>TDA</formula>
            </ligand>
            <ligand macromolecule_id="9">
                <name>(2S)-3-hydroxypropane-1,2-diyl dihexadecanoate</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000568911</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>Z41</formula>
            </ligand>
        </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">8</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">10.0</concentration>
                            <formula>HEPES</formula>
                            <name>HEPES</name>
                        </component>
                        <component>
                            <concentration units="%">0.04</concentration>
                            <formula>DDM</formula>
                            <name>dodecyl maltoside</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">277</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>TFS 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">0.8</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.0</nominal_defocus_max>
                    <nominal_magnification>165000.0</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>TFS Selectris</name>
                            <slit_width units="eV">10</slit_width>
                        </energy_filter>
                    </specialist_optics>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>FEI FALCON IV (4k x 4k)</film_or_detector_model>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>13558</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">35.0</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>2266553</number_selected>
                </particle_selection>
                <ctf_correction>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="OTHER">
                    <details>Ab initio reconstruction</details>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>2</number_classes_used>
                    <applied_symmetry>
                        <point_group>C1</point_group>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">3.46</resolution>
                    <resolution_method>OTHER</resolution_method>
                    <details>The best parts of two maps at 3.28 A and 3.46 A were combined using phenix.combine_focused_maps</details>
                    <number_images_used>105155</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <details>Non-uniform refinement</details>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="359662">
        <file>emd_52209.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>448</col>
            <row>448</row>
            <sec>448</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>448</x>
            <y>448</y>
            <z>448</z>
        </spacing>
        <cell>
            <a units="Å">331.52002</a>
            <b units="Å">331.52002</b>
            <c units="Å">331.52002</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>Z</fast>
            <medium>Y</medium>
            <slow>X</slow>
        </axis_order>
        <statistics>
            <minimum>-30.859718000000001</minimum>
            <maximum>45.319980000000001</maximum>
            <average>0.00296828</average>
            <std>1.0508018</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.74000007</x>
            <y units="Å">0.74000007</y>
            <z units="Å">0.74000007</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>5.93</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-52209::::</label>
        <annotation_details>Composite map</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>9HIS</access_code>
                    <chain>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <initial_model>
                    <access_code>9HIV</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>
                <details>Experimental models were fit into the combined focused map.</details>
                <refinement_space>REAL</refinement_space>
                <overall_bvalue>64.900000000000006</overall_bvalue>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
