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    <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>2022-11-27</deposition>
            <header_release>2024-03-13</header_release>
            <map_release>2024-03-13</map_release>
            <update>2024-03-13</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)</funding_body>
                <code>R01 AI127401</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Health and Medical Research Council (NHMRC, Australia)</funding_body>
                <code>APP1196924</code>
                <country>Australia</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Natural Sciences and Engineering Research Council (NSERC, Canada)</funding_body>
                <code>RGPIN 04345</code>
                <country>Canada</country>
            </grant_reference>
        </grant_support>
        <title>Cryo-EM structure of the Agrobacterium T-pilus</title>
        <authors_list>
            <author>Kreida S</author>
            <author>Narita A</author>
            <author>Johnson MD</author>
            <author>Tocheva EI</author>
            <author>Das A</author>
            <author>Jensen GJ</author>
            <author>Ghosal D</author>
        </authors_list>
        <keywords>VirB/D4 T4SS, Bacterial conjugation, T-pilus, helical filament, PROTEIN FIBRIL</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Kreida S</author>
                    <author order="2">Narita A</author>
                    <author order="3">Johnson MD</author>
                    <author order="4">Tocheva EI</author>
                    <author order="5">Das A</author>
                    <author order="6">Ghosal D</author>
                    <author order="7">Jensen GJ</author>
                    <title>Cryo-EM structure of the Agrobacterium tumefaciens T4SS-associated T-pilus reveals stoichiometric protein-phospholipid assembly.</title>
                    <journal_abbreviation>Structure</journal_abbreviation>
                    <country>UK</country>
                    <volume>31</volume>
                    <first_page>385</first_page>
                    <last_page>394.e4</last_page>
                    <year>2023</year>
                    <external_references type="PUBMED">36870333</external_references>
                    <external_references type="DOI">doi:10.1016/j.str.2023.02.005</external_references>
                    <external_references type="ISSN">0969-2126</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>8fai</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>T-pilus</name>
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            <complex_supramolecule supramolecule_id="1">
                <name>T-pilus</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="358">Agrobacterium tumefaciens</organism>
                    <strain>NT1REB(pJK270)</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="kDa/nm">2.787</theoretical>
                </molecular_weight>
            </complex_supramolecule>
            <organelle_or_cellular_component_supramolecule supramolecule_id="2">
                <name>VirB2</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="358">Agrobacterium tumefaciens</organism>
                    <strain>NT1REB(pJK270)</strain>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
            <organelle_or_cellular_component_supramolecule supramolecule_id="3">
                <name>Phosphatidylglycerol 16:1/18:1</name>
                <parent>1</parent>
                <natural_source database="NCBI">
                    <organism ncbi="358">Agrobacterium tumefaciens</organism>
                    <strain>NT1REB(pJK270)</strain>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Protein virB2</name>
                <natural_source database="NCBI">
                    <organism ncbi="358">Agrobacterium tumefaciens</organism>
                    <strain>NT1REB(pJK270)</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.012326439</theoretical>
                </molecular_weight>
                <number_of_copies>15</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MRCFERYRVHLNRLSLSNAVMRMVSGYAPSVVGAMGWSIFSSGPAAAQSAGGGTDPATMVNNICTFILGPFGQSLAVLGI
VAIGISWMFGRASLGLVAGVVGGIVIMFGASFLGKTLTGGG</string>
                    <external_references type="UNIPROTKB">P17792</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="2">
                <name>(7Z,19R,22S,25R)-22,25,26-trihydroxy-16,22-dioxo-17,21,23-trioxa-22lambda~5~-phosphahexacos-7-en-19-yl (9Z)-octadec-9-enoate</name>
                <molecular_weight>
                    <theoretical units="MDa">0.0007469909999999999</theoretical>
                </molecular_weight>
                <number_of_copies>15</number_of_copies>
                <formula>XL0</formula>
            </ligand>
        </macromolecule_list>
    </sample>
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        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <concentration units="mg/mL">1</concentration>
                    <buffer>
                        <ph>5.5</ph>
                        <component>
                            <concentration units="mM">50.0</concentration>
                            <formula>MES</formula>
                            <name>2-(N-morpholino)ethanesulfonic acid</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>UltrAuFoil R1.2/1.3</model>
                        <material>GOLD</material>
                        <mesh>300</mesh>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">60</time>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE-PROPANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">295</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                </helical_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <helical_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">100.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">0.7000000000000001</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.0</nominal_defocus_max>
                    <nominal_magnification>105000.0</nominal_magnification>
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                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 (6k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">60.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
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            </microscopy_list>
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                <image_recording_id>1</image_recording_id>
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                    <number_classes_used>2</number_classes_used>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">13.44</delta_z>
                            <delta_phi units="deg">32.62</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>4.0beta2</version>
                        </software>
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                    <number_images_used>3543</number_images_used>
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                        <software>
                            <name>RELION</name>
                            <version>4.0beta2</version>
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                    </software_list>
                    <details>Filaments were manually picked using EMAN2 e2helixboxer and particles were extracted by RELION.</details>
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                    <details>A cylinder generated by relion_helix_toolbox, a program in RELION.</details>
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                    <type>NOT APPLICABLE</type>
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