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    <admin>
        <current_status>
            <date>2026-03-18</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <revision_history>
            <revision version="1.0" date="2026-03-18">
                <change_list>
                    <metadata>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                    <half_map part="2">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </half_map>
                    <image>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                    <primary_map>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                </change_list>
            </revision>
        </revision_history>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2025-05-06</deposition>
            <header_release>2026-03-18</header_release>
            <map_release>2026-03-18</map_release>
            <update>2026-03-18</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Science Foundation (NSF, United States)</funding_body>
                <code>MCB2213840</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Science Foundation (NSF, United States)</funding_body>
                <code>MCB2213841</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>A. agrestis Rubisco (8 RbcL 7 RbcS 1 RbcS-STAR)</title>
        <authors_list>
            <author ORCID="0000-0002-5007-1865">Ang WSL</author>
            <author ORCID="0000-0002-1629-3368">Oh ZG</author>
            <author ORCID="0000-0002-0076-0152">Li FW</author>
            <author ORCID="0000-0003-2072-0884">Gunn LH</author>
        </authors_list>
        <keywords>Anthoceros agrestis rubisco, pyrenoid, synbio, rubisco linker, PHOTOSYNTHESIS</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0002-1629-9786" order="1">Robison TA</author>
                    <author ORCID="0000-0002-7373-9071" order="2">Mao Y</author>
                    <author ORCID="0000-0002-1629-3368" order="3">Oh ZG</author>
                    <author ORCID="0000-0002-5007-1865" order="4">Ang WSL</author>
                    <author ORCID="0000-0002-6801-6709" order="5">Loh DH</author>
                    <author ORCID="0000-0003-3252-7205" order="6">Hsieh YH</author>
                    <author ORCID="0009-0001-2554-4624" order="7">Ceminsky M</author>
                    <author ORCID="0009-0000-4792-4065" order="8">Atkinson N</author>
                    <author ORCID="0000-0002-5064-3931" order="9">Lafferty D</author>
                    <author order="10">Xu X</author>
                    <author ORCID="0000-0003-2072-0884" order="11">Gunn LH</author>
                    <author ORCID="0000-0002-7255-872X" order="12">McCormick AJ</author>
                    <author ORCID="0000-0002-0076-0152" order="13">Li FW</author>
                    <title>An unconventional Rubisco small subunit underpins the CO 2 -concentrating organelle in land plants.</title>
                    <journal_abbreviation>Science</journal_abbreviation>
                    <country>US</country>
                    <volume>391</volume>
                    <first_page>1070</first_page>
                    <last_page>1075</last_page>
                    <year>2026</year>
                    <external_references type="PUBMED">41785357</external_references>
                    <external_references type="DOI">doi:10.1126/science.aea0150</external_references>
                    <external_references type="ISSN">1095-9203</external_references>
                    <external_references type="CSD">0038</external_references>
                    <external_references type="ASTM">SCIEAS</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-70517</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>A. agrestis Rubisco (8 RbcL 8 RbcS)</details>
            </emdb_reference>
        </emdb_list>
        <other_db_list>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-70517</accession_id>
                <content_type>other EM volume</content_type>
                <details>A. agrestis Rubisco (8 RbcL 8 RbcS)</details>
            </db_reference>
            <db_reference>
                <db_name>EMDB</db_name>
                <accession_id>EMD-70520</accession_id>
                <content_type>associated EM volume</content_type>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>A. agrestis Rubisco (8 RbcL, 7 RbcS, 1 RbcS-STAR)</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>A. agrestis Rubisco (8 RbcL, 7 RbcS, 1 RbcS-STAR)</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_list>
                <natural_source database="NCBI">
                    <organism ncbi="41834">Anthoceros agrestis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="kDa/nm">0.55</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <other_macromolecule macromolecule_id="1">
                <name>Rubisco Large Subunit</name>
                <natural_source database="NCBI">
                    <organism ncbi="41834">Anthoceros agrestis</organism>
                </natural_source>
                <sequence>
                    <string>MSPQTETKAGVGFKAGVKDYRLTYYTPDYETKDTDILAAFRMTPQPGVPPEEAGAAVAAESSTGTWTTVWTDGLTSLDRYKGRCYDIEPVAGEENQYIAYVAYPLDLFEEGSVTNMFTSIVGNVFGFKALRALRLEDLRIPPAYSKTFQGPPHGIQVERDKLNKYGRPLLGCTIKPKLGLSAKNYGRAVYECLRGGLDFTKDDENVNSQPFMRWRDRFLFVAEAIFKSQAETGEIKGHYLNATAGTCEEMMKRAQFARELGMPIVMHDYLTGGFTANTTLAHYCRDNGLLLHIHRAMHAVIDRQRNHGIHFRVLAKALRMSGGDHIHSGTVVGKLEGEREVTLGFVDLLRDDYIEKDRSRGIYFTQDWVSMPGVLPVASGGIHVWHMPALTEIFGDDSVLQFGGGTLGHPWGNAPGAVANRVALEACVQARNEGRDLAREGNDIIREASKWSPELAAACEVWKEIKFVFETIDTL</string>
                </sequence>
                <classification>other</classification>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
            </other_macromolecule>
            <other_macromolecule macromolecule_id="2">
                <name>Rubisco Small Subunit</name>
                <natural_source database="NCBI">
                    <organism ncbi="41834">Anthoceros agrestis</organism>
                </natural_source>
                <sequence>
                    <string>MQVWNPIDNPKFETLSYLPPLTDNQIAREIDYMLRNKWIPCLEFDPSGTITTLPGQPGYYGGRYWTMWKLPMFGCNNAGYVLREIEHCKNAYPGCFIRVLGFDNIRQVQCCAFIVHKPQHHHHHH</string>
                </sequence>
                <classification>other</classification>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
            </other_macromolecule>
            <other_macromolecule macromolecule_id="3">
                <name>Rubisco Small Subunit - SequesTration Associated Region (RbcS-STAR)</name>
                <natural_source database="NCBI">
                    <organism ncbi="41834">Anthoceros agrestis</organism>
                </natural_source>
                <sequence>
                    <string>MQVWTPVDNKKFETLSYLPALSSNQIAKQIDFMLSKGWIPCLEFDKSAELKVVRGQPGFYNGRYWTMWKLPMFGCNDASSVLREVENCRKAYPNCYIRVLGFDNQRQVQCSAFIVHKPVKNALTEKLDRSLAKPAYKPQPQVSSVVTSRSGWSRDVEVYQPKDDKTVVDKINSLQAGLDGLQRELALLRASAAHDKIKILQGALDGLQREISVLRASVGHTV</string>
                </sequence>
                <classification>other</classification>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
            </other_macromolecule>
        </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</concentration>
                    <buffer>
                        <ph>8.0</ph>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <formula>C4H11NO3</formula>
                            <name>Tris</name>
                        </component>
                        <component>
                            <concentration units="mM">50.0</concentration>
                            <formula>NaCl</formula>
                            <name>Sodium chloride</name>
                        </component>
                        <details>20 mM Tris pH 8.0, 50 mM NaCl</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>GOLD</material>
                        <mesh>400</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_thickness>2.0</film_thickness>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">45</time>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">277.15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>Blot force 0 for 4 seconds. </details>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>FEI TALOS ARCTICA</microscope>
                    <illumination_mode>FLOOD BEAM</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">200</acceleration_voltage>
                    <nominal_defocus_min units="µm">0.5</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.5</nominal_defocus_max>
                    <nominal_magnification>79000.0</nominal_magnification>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <basic/>
                    </alignment_procedure>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K3 (6k x 4k)</film_or_detector_model>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>4222</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">50.0</average_electron_dose_per_image>
                            <details>Images were collected over 40 frames</details>
                        </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>825654</number_selected>
                </particle_selection>
                <ctf_correction>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4</version>
                            <processing_details>Patch CTF estimation</processing_details>
                        </software>
                    </software_list>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="PDB ENTRY">
                    <pdb_model>
                        <pdb_id>9CHZ</pdb_id>
                    </pdb_model>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <point_group>C1</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">6.8</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4</version>
                        </software>
                    </software_list>
                    <number_images_used>35660</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>8</number_classes>
                    <average_number_members_per_class>10000.0</average_number_members_per_class>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
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        <file>emd_70520.map.gz</file>
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            <b units="Å">279.04</b>
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            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
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        <annotation_details>A. agrestis Rubisco (8 RbcL 7 RbcS1 1 RbcS-STAR)</annotation_details>
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