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                        <revision_type>REMEDIATION</revision_type>
                        <provider>REPOSITORY</provider>
                        <description>Metalloprotein remediation</description>
                        <revision_group>STRUCTURE_SUMMARY</revision_group>
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        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2018-12-17</deposition>
            <header_release>2019-01-16</header_release>
            <map_release>2019-07-03</map_release>
            <update>2026-08-12</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Other government</funding_body>
                <code>N00014-16-1-2526</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Outer Membrane Cytochrome S Filament from Geobacter Sulfurreducens</title>
        <authors_list>
            <author>Filman DJ</author>
            <author>Marino SF</author>
        </authors_list>
        <keywords>Conductive, filament, nanowire, SIX-HEME MULTIHEME C-TYPE CYTOCHROME, PROTEIN FIBRIL</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Filman DJ</author>
                    <author order="2">Marino SF</author>
                    <author order="3">Ward JE</author>
                    <author order="4">Yang L</author>
                    <author order="5">Mester Z</author>
                    <author order="6">Bullitt E</author>
                    <author order="7">Lovley DR</author>
                    <author order="8">Strauss M</author>
                    <title>Cryo-EM reveals the structural basis of long-range electron transport in a cytochrome-based bacterial nanowire.</title>
                    <journal_abbreviation>Commun Biol</journal_abbreviation>
                    <country>UK</country>
                    <volume>2</volume>
                    <first_page>219</first_page>
                    <last_page>219</last_page>
                    <year>2019</year>
                    <external_references type="PUBMED">31240257</external_references>
                    <external_references type="DOI">doi:10.1038/s42003-019-0448-9</external_references>
                    <external_references type="ISSN">2399-3642</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6nef</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-9357</accession_id>
                <content_type>associated EM volume</content_type>
                <details>Outer Membrane Cytochrome S Filament from Geobacter Sulfurreducens</details>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>Outer Membrane Cytochrome S filament as a bacterial nanowire</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>Outer Membrane Cytochrome S filament as a bacterial nanowire</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="35554">Geobacter sulfurreducens</organism>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>C-type cytochrome OmcS</name>
                <natural_source database="NCBI">
                    <organism ncbi="243231">Geobacter sulfurreducens (strain ATCC 51573 / DSM 12127 / PCA)</organism>
                    <strain>ATCC 51573 / DSM 12127 / PCA</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.042986008</theoretical>
                </molecular_weight>
                <details>SIX-HEME MULTIHEME C-TYPE CYTOCHROME, PROTEIN FIBRIL</details>
                <number_of_copies>1</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>FHSGGVAECEGCHTMHNSLGGAVMNSATAQFTTGPMLLQGATQSSSCLNCHQHAGDTGPSSYHISTAEADMPAGTAPLQM
TPGGDFGWVKKTYTWNVRGLNTSEGERKGHNIVAGDYNYVADTTLTTAPGGTYPANQLHCSSCHDPHGKYRRFVDGSIAT
TGLPIKNSGSYQNSNDPTAWGAVGAYRILGGTGYQPKSLSGSYAFANQVPAAVAPSTYNRTEATTQTRVAYGQGMSEWCA
NCHTDIHNSAYPTNLRHPAGNGAKFGATIAGLYNSYKKSGDLTGTQASAYLSLAPFEEGTADYTVLKGHAKIDDTALTGA
DATSNVNCLSCHRAHASGFDSMTRFNLAYEFTTIADASGNSIYGTDPNTSSLQGRSVNEMTAAYYGRTADKFAPYQRALC
NKCHAKD</string>
                    <external_references type="UNIPROTKB">Q74A86</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="2">
                <name>HEME C</name>
                <molecular_weight>
                    <theoretical units="MDa">0.0006205189999999999</theoretical>
                </molecular_weight>
                <number_of_copies>6</number_of_copies>
                <formula>HEC</formula>
            </ligand>
            <ligand macromolecule_id="3">
                <name>MAGNESIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">2.4305e-05</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>MG</formula>
            </ligand>
        </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>7.0</ph>
                    </buffer>
                    <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>
                    <details>Sample contained thick (4nm) and thin (3nm) filaments. This reconstruction is of the thick filaments.</details>
                </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>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 QUANTUM (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <average_electron_dose_per_image units="e/Å^2">45.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </helical_microscopy>
            </microscopy_list>
            <helical_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">47.5</delta_z>
                            <delta_phi units="deg">83.01</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.4</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>462964</number_images_used>
                </final_reconstruction>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3</version>
                        </software>
                    </software_list>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="NONE"/>
                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="32001">
        <file>emd_9357.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>200</col>
            <row>200</row>
            <sec>200</sec>
        </dimensions>
        <origin>
            <col>-99</col>
            <row>-100</row>
            <sec>-100</sec>
        </origin>
        <spacing>
            <x>200</x>
            <y>200</y>
            <z>200</z>
        </spacing>
        <cell>
            <a units="Å">211.99998</a>
            <b units="Å">211.99998</b>
            <c units="Å">211.99998</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>X</medium>
            <slow>Y</slow>
        </axis_order>
        <statistics>
            <minimum>-0.13718002</minimum>
            <maximum>0.2536325</maximum>
            <average>0.0005612817</average>
            <std>0.0071339365</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.06</x>
            <y units="Å">1.06</y>
            <z units="Å">1.06</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.06</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::D_1000238653::::</label>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>OTHER</refinement_protocol>
                <details>Atomic model was built de novo visually and repeatedly rebuilt visually using Coot and SPDBV.  After each round of manual rebuilding, the parameters of the atomic model underwent stereochemically restrained reciprocal space refinement, using either Refmac5 or Phenix.autobuild or both, using as a reference the amplitudes and phases of the Fourier transform of a portion of the cryoEM reconstruction.  For convenience, a single-subunit model was initially built to fit an approximation of the reference map in space group P4(3), which was subsequently replaced by a three-subunit model, using the authentic helical parameters of the map. one of the two axial ligands for HEM 505 is ne2 of his 41 from a neighboring helical-symmetry-related protein chain.</details>
                <target_criteria>maximum likelihood with phases</target_criteria>
                <refinement_space>RECIPROCAL</refinement_space>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
