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            <date>2025-09-17</date>
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                            <category>em_admin</category>
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        <sites>
            <deposition>PDBj</deposition>
            <last_processing>PDBj</last_processing>
        </sites>
        <key_dates>
            <deposition>2021-05-28</deposition>
            <header_release>2021-10-06</header_release>
            <map_release>2021-10-06</map_release>
            <update>2025-09-17</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Science Foundation (NSF, China)</funding_body>
            </grant_reference>
        </grant_support>
        <title>Cryo-EM structure of cyanobacterial phycobilisome  from Synechococcus sp. PCC 7002</title>
        <authors_list>
            <author>Zheng L</author>
            <author>Zheng Z</author>
        </authors_list>
        <keywords>Phycobilisome, Synechococcus sp. PCC 7002, Cryo-EM, photosynthesis</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Zheng L</author>
                    <author order="2">Zheng Z</author>
                    <author order="3">Li X</author>
                    <author order="4">Wang G</author>
                    <author ORCID="0000-0001-9797-3666" order="5">Zhang K</author>
                    <author order="6">Wei P</author>
                    <author ORCID="0000-0002-4213-8548" order="7">Zhao J</author>
                    <author ORCID="0000-0003-3067-9993" order="8">Gao N</author>
                    <title>Structural insight into the mechanism of energy transfer in cyanobacterial phycobilisomes.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>12</volume>
                    <first_page>5497</first_page>
                    <last_page>5497</last_page>
                    <year>2021</year>
                    <external_references type="PUBMED">34535665</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-021-25813-y</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>7ext</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-31373</accession_id>
                <content_type>associated EM volume</content_type>
                <details>Cryo-EM structure of cyanobacterial phycobilisome  from Synechococcus sp. PCC 7002</details>
            </db_reference>
        </other_db_list>
    </crossreferences>
    <sample>
        <name>Cryo-EM structure of cyanobacterial phycobilisome  from Synechococcus sp. PCC 7002</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Cryo-EM structure of cyanobacterial phycobilisome  from Synechococcus sp. PCC 7002</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>
                        <macromolecule_id>8</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>9</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>10</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">6</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Phycobilisome rod-core linker polypeptide CpcG</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.028540151999999996</theoretical>
                </molecular_weight>
                <number_of_copies>6</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MTIPLLQYAPSSQNTRVAGYTVGGDEQPFVFTTDNVISDSDFDVLINAAYRQIFFHAFKCDRQQLLESQLRNGQITVRDF
IRGLLLSETFIDSFYNKNSNYRFVEQCIQRVLGRDPFSEQEKIAWSIVICTKGLAAFVDQLLNTDEYMENFGYDTVPYQR
RRSLASREQGEIPFNIKSPRYDAYYRSQLGFPQVVWQNAVRRFRTPDRVPQAGDPALFLNMARSAQIPKVNVRVSAADIS
LAAVPYRN</string>
                    <external_references type="UNIPROTKB">Q05238</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>C-phycocyanin subunit alpha</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.017637695</theoretical>
                </molecular_weight>
                <number_of_copies>72</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MKTPLTEAVALADSQGRFLSNTELQYLYGRLRQGAFALEAAQTLTAKADTLVNGAAQAVYSKFPYTTSTPGNNFAADQRG
KDKCARDIGYYLRMVTYCLVAGGTGPMDEYLIAGVDEINRTFDLSPSWYVEALKHIKANHGLTGDAATETNNYIDYAINA
LS</string>
                    <external_references type="UNIPROTKB">P03943</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>C-phycocyanin subunit beta</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018353851999999997</theoretical>
                </molecular_weight>
                <number_of_copies>72</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MFDIFTRVVSQADARGEFISSDKLEALKKVVAEGTKRSDAVSRMTNNASSIVTNAARQLFADQPQLIAPGGNAYTNRRMA
ACLRDMEIILRYVTYATFTGDASVLNDRCLNGLRETYVALGVPGASVAAGVRAMGKAAVAIVMDPAGVTSGDCSSLQQEI
ELYFETAAKAVE</string>
                    <external_references type="UNIPROTKB">P03944</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>Phycobilisome 32.3 kDa linker polypeptide, phycocyanin-associated, rod</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.032308896</theoretical>
                </molecular_weight>
                <number_of_copies>12</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MPVTVAASRLGTAAFDQSPVELRANYSRDDAQTVIRAVYRQVLGNDYVMSSERLTAAESLFTNGFISVRDFVRAVAQSEL
YKEKFLYNNFQTRVIELNFKHLLGRAPYDEAEVIEHLDRYQNEGFEADINSYIDSAEYTENFGDNIVPYIRSYVVQTGHR
TVGFTRMFSLQRGYANSDRAQIAGNASRLAQELARNTTSAVVGPSGVNEGWAFRSAADDYHPGQSLGGSTGLSADDQVVR
VEVAALSTPRYPRIRRSSRVFFVPVSRLSQKLQEIQRMGGRVASISPAGQ</string>
                    <external_references type="UNIPROTKB">Q05237</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="5">
                <name>Phycobiliprotein ApcE</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.099391656</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MTIKASGGSSLARPQLYQTVPLSNISQAEQQDRYLESGELTALKTFYDSGLKRLAIAQAIKLSSQLIVSRAANRIFAGGS
PLAYLDQPETDTDDSDLGVSMAVGDASGATGIFGGVKNLFLGSGGGKIPAGFRPISVSRYGPRNMTKSLRDMAWFLRYTT
YAIVAGDPSILVVNTRGLKEVIENACSIPATIVAIQEMKAASLDLFRGDREAQETVVQYFDVLITEMQTQVPNDKLRQRP
SIDAQGLQLPQSYFNAAEKRQKFVMKPGLSALEKNSVVKAAYRQIFERDITRAYSQSISYLESQVKSGDISMKEFVRRLA
KSPLYRKQFFEPFINSRALELAFRHILGRGPSSREEVQEYFAIVSSGGLAALVDALVDSQEYADYFGEETVPYLRGLGQE
AQECRNWGMQQDLFKYSAPFRKVPQFITTFASYNQPLPDQHVYGSGNDALEIQFGAIFPKATRSPSASPAPFNKDTRRIL
IHRGPGINNQLGNPRARATQPGSLGAKVFRLNNELPSGKTTNVSFSESATQKVIEAAYRQVFGRMVYAGQRQKVAEIKLE
NGEITLREFIRALAKSDVFRNTYWSSLYVTKAVEYIHRRLLGRPTYGRQEINSYFDTCAKKGFYALVDAIIDSKEYEEAF
GEDTVPYERYLTPGGYSLRQTRPGALREDVGVKVKVEKTARFIELGTSSTKNLPVTDVDARLKQGVNIQRQQTKAFKLTD
TFNKVELKTAIAAAYRQIFERDIEPYIVDAQFTALESKLGNREINMKEFIEGLGCSELYQKEFYTPYPNTKVIEMGTKHF
LGRAPLDQQEIRKYNQILASQGLKAFIGAMVNSMEYLDNFGEDTVPFRRFPTLPAANFPNTERLYNQLTKQNRDLVVPSF
EPAVKR</string>
                    <external_references type="UNIPROTKB">O68973</external_references>
                </sequence>
                <ec_number>4.-.-.-</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="6">
                <name>Phycobilisome 7.8 kDa linker polypeptide, allophycocyanin-associated, core</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.0078061879999999995</theoretical>
                </molecular_weight>
                <number_of_copies>6</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MRMFKITACVPSQSRIRTQRELQNTYFTKLVPYDNWFREQQRIMKMGGKIVKVQLATGKPGTNTGLT</string>
                    <external_references type="UNIPROTKB">O68971</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="7">
                <name>Allophycocyanin alpha subunit</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.017302659999999997</theoretical>
                </molecular_weight>
                <number_of_copies>32</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSIVTKSIVNADAEARYLSPGELDRIKAFVTSGESRLRIAETLTGSRERIIKSAGDALFQKRPDVVSPGGNAYGEEMTAT
CLRDMDYYLRLITYGVVAGDVTPIEEIGLVGVREMYKSLGTPVDAVAQAVREMKAVATGMMSGDDAAEAGAYFDYVIGAM
E</string>
                    <external_references type="UNIPROTKB">B1XQM2</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="8">
                <name>Allophycocyanin beta subunit</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.01723759</theoretical>
                </molecular_weight>
                <number_of_copies>34</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MQDAITSVINSADVQGKYLDGSAMDKLKAYFTTGALRVRAASTISANAAAIVKEAVAKSLLYSDVTRPGGNMYTTRRYAA
CIRDLDYYLRYATYAMLAGDPSILDERVLNGLKETYNSLGVPVGSTVQAIQAMKEVTAGLVGADAGREMGVYFDYICSGL
S</string>
                    <external_references type="UNIPROTKB">O68970</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="9">
                <name>Allophycocyanin subunit beta-18</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018742137</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MRDAVTSLIRNYDTTGRYFDRDAIESLKDYFASGNDRITVAAMINSQSAEIVKAAANSLFEAVPELLLAGGNAYTTRRFS
ACLRDMDYYLRYGTYALIAGDMDVLNERVLQGLRETYNSLGVPIAPTVRGIQFLKDAIKEMAAAAGIANTAFIDEPFDHM
TRELSEVDL</string>
                    <external_references type="UNIPROTKB">O68967</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="10">
                <name>Allophycocyanin subunit alpha-B</name>
                <natural_source database="NCBI">
                    <organism ncbi="32049">Synechococcus sp. PCC 7002</organism>
                    <strain>PCC 7002</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.01772127</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="32049">Synechococcus sp. PCC 7002</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSVVSQVILRADDELRYPSSGELSGIKNFLATGAVRIRIAEALADNEKKIVDQAQKQLFSIHPEYRTSGGNAATTKQYNQ
CLRDYGWYLRLVTYGILAGDKDPIERIGLIGVKEMYNALGVPVPGMVDAIRCLKDAALGVLDSEEARIAAPYFDFITQAM
S</string>
                    <external_references type="UNIPROTKB">O68966</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="11">
                <name>PHYCOCYANOBILIN</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000588694</theoretical>
                </molecular_weight>
                <number_of_copies>288</number_of_copies>
                <formula>CYC</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">
                    <buffer>
                        <ph>7.0</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <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>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>GATAN K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">64.0</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>
                <ctf_correction>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="PDB ENTRY"/>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">3.5</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>64268</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>NOT APPLICABLE</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing/>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="500001">
        <file>emd_31373.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>500</col>
            <row>500</row>
            <sec>500</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>500</x>
            <y>500</y>
            <z>500</z>
        </spacing>
        <cell>
            <a units="Å">527.5</a>
            <b units="Å">527.5</b>
            <c units="Å">527.5</c>
            <alpha units="deg">90.0</alpha>
            <beta units="deg">90.0</beta>
            <gamma units="deg">90.0</gamma>
        </cell>
        <axis_order>
            <fast>X</fast>
            <medium>Y</medium>
            <slow>Z</slow>
        </axis_order>
        <statistics>
            <minimum>-0.028300187</minimum>
            <maximum>0.082177125</maximum>
            <average>-0.00019888715</average>
            <std>0.0045821336</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.055</x>
            <y units="Å">1.055</y>
            <z units="Å">1.055</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.0167</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-31373::::</label>
    </map>
</emd>
