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    <admin>
        <current_status>
            <date>2024-06-12</date>
            <code>REL</code>
            <processing_site>PDBj</processing_site>
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        <sites>
            <deposition>PDBj</deposition>
            <last_processing>PDBj</last_processing>
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        <key_dates>
            <deposition>2021-06-03</deposition>
            <header_release>2022-11-09</header_release>
            <map_release>2022-11-09</map_release>
            <update>2024-06-12</update>
        </key_dates>
        <title>Cytochrome c-type biogenesis protein CcmABCD from E. coli in complex with ANP</title>
        <authors_list>
            <author>Li J</author>
            <author>Zheng W</author>
        </authors_list>
        <keywords>ATP-binding exporter, Heme transmembrane transporter, Cytochrome c biogenesis protein., MEMBRANE PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0002-2720-7111" order="1">Li J</author>
                    <author order="2">Zheng W</author>
                    <author ORCID="0000-0001-5584-9755" order="3">Gu M</author>
                    <author order="4">Han L</author>
                    <author order="5">Luo Y</author>
                    <author order="6">Yu K</author>
                    <author order="7">Sun M</author>
                    <author order="8">Zong Y</author>
                    <author order="9">Ma X</author>
                    <author order="10">Liu B</author>
                    <author ORCID="0000-0003-1168-2564" order="11">Lowder EP</author>
                    <author order="12">Mendez DL</author>
                    <author ORCID="0000-0002-4309-9413" order="13">Kranz RG</author>
                    <author ORCID="0000-0001-8617-2855" order="14">Zhang K</author>
                    <author ORCID="0000-0002-9165-0126" order="15">Zhu J</author>
                    <title>Structures of the CcmABCD heme release complex at multiple states.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>13</volume>
                    <first_page>6422</first_page>
                    <last_page>6422</last_page>
                    <year>2022</year>
                    <external_references type="PUBMED">36307425</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-022-34136-5</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>7f03</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Cytochrome c-type biogenesis protein CcmABCD</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Cytochrome c-type biogenesis protein CcmABCD</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_list>
                <natural_source database="NCBI">
                    <organism ncbi="469008">Escherichia coli BL21(DE3)</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.13</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Cytochrome c biogenesis ATP-binding export protein CcmA</name>
                <natural_source database="NCBI">
                    <organism ncbi="469008">Escherichia coli BL21(DE3)</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.023080213</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MGMLEARELLCERDERTLFSGLSFTLNAGEWVQITGSNGAGKTTLLRLLTGLSRPDAGEVLWQGQPLHQVRDSYHQNLLW
IGHQPGIKTRLTALENLHFYHRDGDTAQCLEALAQAGLAGFEDIPVNQLSAGQQRRVALARLWLTRATLWILDEPFTAID
VNGVDRLTQRMAQHTEQGGIVILTTHQPLNVAESKIRRISLTQTRAA</string>
                    <external_references type="UNIPROTKB">P33931</external_references>
                </sequence>
                <ec_number>7.6.2.5</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Heme exporter protein B</name>
                <natural_source database="NCBI">
                    <organism ncbi="469008">Escherichia coli BL21(DE3)</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.023632676</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MMFWRIFRLELRVAFRHSAEIANPLWFFLIVITLFPLSIGPEPQLLARIAPGIIWVAALLSSLLALERLFRDDLQDGSLE
QLMLLPLPLPAVVLAKVMAHWMVTGLPLLILSPLVAMLLGMDVYGWQVMALTLLLGTPTLGFLGAPGVALTVGLKRGGVL
LSILVLPLTIPLLIFATAAMDAASMHLPVDGYLAILGALLAGTATLSPFATAAALRISIQ</string>
                    <external_references type="UNIPROTKB">P0ABL8</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Heme exporter protein C</name>
                <natural_source database="NCBI">
                    <organism ncbi="469008">Escherichia coli BL21(DE3)</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.027911263999999998</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MWKTLHQLAIPPRLYQICGWFIPWLAIASVVVLTVGWIWGFGFAPADYQQGNSYRIIYLHVPAAIWSMGIYASMAVAAFI
GLVWQMKMANLAVAAMAPIGAVFTFIALVTGSAWGKPMWGTWWVWDARLTSELVLLFLYVGVIALWHAFDDRRLAGRAAG
ILVLIGVVNLPIIHYSVEWWNTLHQGSTRMQQSIDPAMRSPLRWSIFGFLLLSATLTLMRMRNLILLMEKRRPWVSELIL
KRGRK</string>
                    <external_references type="UNIPROTKB">P0ABM1</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>Heme exporter protein D</name>
                <natural_source database="NCBI">
                    <organism ncbi="469008">Escherichia coli BL21(DE3)</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.007753103</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MTPAFASWNEFFAMGGYAFFVWLAVVMTVIPLVVLVVHSVMQHRAILRGVAQQRAREARLRAAQQQEAA</string>
                    <external_references type="UNIPROTKB">P0ABM5</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="5">
                <name>MAGNESIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">2.4305e-05</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <formula>MG</formula>
            </ligand>
            <ligand macromolecule_id="6">
                <name>PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000506196</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <formula>ANP</formula>
            </ligand>
            <ligand macromolecule_id="7">
                <name>1,2-Distearoyl-sn-glycerophosphoethanolamine</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000748065</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>3PE</formula>
            </ligand>
            <ligand macromolecule_id="8">
                <name>water</name>
                <molecular_weight>
                    <theoretical units="MDa">1.8015e-05</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <formula>HOH</formula>
            </ligand>
        </macromolecule_list>
    </sample>
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            <method>singleParticle</method>
            <aggregation_state>particle</aggregation_state>
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                <single_particle_preparation preparation_id="1">
                    <buffer>
                        <ph>8.0</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </vitrification>
                </single_particle_preparation>
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            <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>
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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">1.5255</average_electron_dose_per_image>
                        </image_recording>
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                <image_recording_id>1</image_recording_id>
                <startup_model type_of_model="NONE"/>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">3.29</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>142289</number_images_used>
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                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
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                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
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