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    <admin>
        <current_status>
            <date>2024-03-20</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2019-01-31</deposition>
            <header_release>2019-02-27</header_release>
            <map_release>2019-03-13</map_release>
            <update>2024-03-20</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)</funding_body>
                <code>P41GM103832</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)</funding_body>
                <code>U54GM103297</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)</funding_body>
                <code>R01GM079429</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)</funding_body>
                <code>S10OD021600</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Natural Science Foundation of China (NSFC)</funding_body>
                <code>31825008</code>
                <country>China</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Natural Science Foundation of China (NSFC)</funding_body>
                <code>31422014</code>
                <country>China</country>
            </grant_reference>
        </grant_support>
        <title>Small conformation of apo CRISPR_Csm complex</title>
        <authors_list>
            <author>Zhang K</author>
            <author>Pintilie G</author>
        </authors_list>
        <keywords>CRISPR, Type III-A, ssRNAase, ssDNase, HYDROLASE, TRANSFERASE-RNA complex</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Guo M</author>
                    <author order="2">Zhang K</author>
                    <author order="3">Zhu Y</author>
                    <author order="4">Pintilie GD</author>
                    <author order="5">Guan X</author>
                    <author order="6">Li S</author>
                    <author order="7">Schmid MF</author>
                    <author order="8">Ma Z</author>
                    <author order="9">Chiu W</author>
                    <author order="10">Huang Z</author>
                    <title>Coupling of ssRNA cleavage with DNase activity in type III-A CRISPR-Csm revealed by cryo-EM and biochemistry.</title>
                    <journal_abbreviation>Cell Res.</journal_abbreviation>
                    <country>CN</country>
                    <volume>29</volume>
                    <first_page>305</first_page>
                    <last_page>312</last_page>
                    <year>2019</year>
                    <external_references type="PUBMED">30814678</external_references>
                    <external_references type="DOI">doi:10.1038/s41422-019-0151-x</external_references>
                    <external_references type="ISSN">1748-7838</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-0516</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Small conformation of ssRNA-bound CRISPR_Csm complex</details>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-0517</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Big conformation of ssRNA-bound CRISPR_Csm complex</details>
            </emdb_reference>
            <emdb_reference>
                <emdb_id>EMD-0518</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
                <details>Big conformation of apo CRISPR_Csm complex</details>
            </emdb_reference>
        </emdb_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6nue</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Small conformation of apo CRISPR_Csm complex</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Small conformation of apo CRISPR_Csm complex</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_list>
                <natural_source database="NCBI">
                    <organism ncbi="1308">Streptococcus thermophilus</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>CRISPR system single-strand-specific deoxyribonuclease Cas10/Csm1 (subtype III-A)</name>
                <natural_source database="NCBI">
                    <organism ncbi="1308">Streptococcus thermophilus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.086930672</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="866768">Escherichia coli 'BL21-Gold(DE3)pLysS AG'</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MKKEKIDLFYGALLHDIGKVIQRATGERKKHALVGADWFDEIADNQVISDQIRYHMANYQSDKLGNDHLAYITYIADNIA
SGVDRRQSNEESDEDASAKIWDTYTNQADIFNVFGAQTDKRYFKPTVLNLKSKPNFASATYEPFSKGDYAAIATRIKNEL
AEFEFNQAQIDSLLNLFEAILSFVPSSTNSKEIADISLAEHSRLTAAFALAIYDYLEDKGRHNYKEDLFTKASAFYEEEA
FLLASFDLSGIQDFIYNIATSGAAKQLKARSLYLDFMSEYIADSLLDKLGLNRANLLYVGGGHAYFVLANTEKTVETLVQ
FEKDFNQFLLANFQTRLYVAFGWGSFAAKDIMSELNSPESYRQIYQKASRMISEKKISRYDYRTLMLLNRGGKSSERECE
ICHSVENLVSYHDQKVCDICRGLYQFSKEIAHDHFIITENEGLPIGPNACLKGVAFEKLSQESFSRVYVKNDYKAGTIKA
THVFVGDYQCDEIHKYAALSKNEDGLGIKRLAVVRLDVDDLGAAFMAGFSRQGNGQYSTLSRSATFSRSMSLFFKVYINQ
FASDKKLSIIYAGGDDVFAIGSWQDIIAFTVELRQNFIKWTNGKLTLSAGIGLFADKTPISLMAHQTGELEEAAKGNEKD
SISLFSSDYTFKFDRFITNVYDDKLEQIRYFFNHQDERGKNFIYKLIELLRNYESEEKMNVARLAYYLTRLEELTDKDER
DKFKQFKKLFFKWYTNNESDRKEAELALLLYVYEIRKD</string>
                    <external_references type="UNIPROTKB">A0A0A7HFE1</external_references>
                </sequence>
                <ec_number>3.1.-.-</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>CRISPR system Cms protein Csm2</name>
                <natural_source database="NCBI">
                    <organism ncbi="1308">Streptococcus thermophilus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.014238391</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="866768">Escherichia coli 'BL21-Gold(DE3)pLysS AG'</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MAILTDENYVDKAERAISLLEKDNKGNYLLTTSQIRKLLSLCSSLYDRSKERKFDELINDVSYLRVQFVYQAGREIAVKD
LIEKAQILEALKEIKDRETLQRFCRYMEALVAYFKFYGGKD</string>
                    <external_references type="UNIPROTKB">A0A0A7HIX1</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>CRISPR type III-associated RAMP protein Csm3</name>
                <natural_source database="NCBI">
                    <organism ncbi="1308">Streptococcus thermophilus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.024600918</theoretical>
                </molecular_weight>
                <number_of_copies>5</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="866768">Escherichia coli 'BL21-Gold(DE3)pLysS AG'</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MTFAKIKFSAQIRLETGLHIGGSDAFAAIGAIDSPVIKDPITNIPIIPGSSLKGKMRTLLAKVYNEKVAEKPSDDSDILS
RLFGNSKDKRFKMGRLIFRDAFLSNADELDSLGVRSYTEVKFENTIDRITAEANPRQIERAIRNSTFDFELIYEITDENE
NQVEEDFKVIRDGLKLLELDYLGGSGSRGYGKVAFEKLKATTVFGNYDVKTLNELLTAEV</string>
                    <external_references type="UNIPROTKB">A0A0A7HIF0</external_references>
                </sequence>
            </protein_or_peptide>
            <rna macromolecule_id="4">
                <name>crRNA</name>
                <natural_source database="NCBI">
                    <organism ncbi="1308">Streptococcus thermophilus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.022935552999999997</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <sequence>
                    <string>ACGGAAACUUUCGUAACUGUUUAAUUCUGUUCACUUAUUCCACCGAUAUAAACCUAAUUACCUCGAGAGGGG</string>
                </sequence>
            </rna>
            <protein_or_peptide macromolecule_id="5">
                <name>CRISPR type III-associated RAMP protein Csm4</name>
                <natural_source database="NCBI">
                    <organism ncbi="1308">Streptococcus thermophilus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.033786949</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="866768">Escherichia coli 'BL21-Gold(DE3)pLysS AG'</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MTYKLYIMTFQNAHFGSGTLDSSKLTFSADRIFSALVLESLKMGKLDAFLAEANQDKFTLTDAFPFQFGPFLPKPIGYPK
HDQIDQSVDVKEVRRQAKLSKKLQFLALENVDDYLNGELFENEEHAVIDTVTKNQPHKDGNLYQVATTRFSNDTSLYVIA
NESDLLNELMSSLQYSGLGGKRSSGFGRFELDIQNIPLELSDRLTKNHSDKVMSLTTALPVDADLEEAMEDGHYLLTKSS
GFAFSHATNENYRKQDLYKFASGSTFSKTFEGQIVDVRPLDFPHAVLNYAKPLFFKLEV</string>
                    <external_references type="UNIPROTKB">A0A0A7HGA1</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="6">
                <name>ADENOSINE-5'-TRIPHOSPHATE</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000507181</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>ATP</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">
                    <concentration units="mg/mL">0.4</concentration>
                    <buffer>
                        <ph>7.6</ph>
                    </buffer>
                    <grid>
                        <details>unspecified</details>
                    </grid>
                    <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>
                    <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">7.0</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>
                <startup_model type_of_model="NONE"/>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">3.3</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>0.65</version>
                        </software>
                    </software_list>
                    <number_images_used>81540</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
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        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>384</col>
            <row>384</row>
            <sec>384</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
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        <spacing>
            <x>384</x>
            <y>384</y>
            <z>384</z>
        </spacing>
        <cell>
            <a units="Å">407.03998</a>
            <b units="Å">407.03998</b>
            <c units="Å">407.03998</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>
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        <statistics>
            <minimum>-2.724599</minimum>
            <maximum>5.119803</maximum>
            <average>-0.00011027274</average>
            <std>0.1352678</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.06</x>
            <y units="Å">1.06</y>
            <z units="Å">1.06</z>
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        <contour_list>
            <contour primary="true">
                <level>0.8</level>
                <source>AUTHOR</source>
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        <label>::::EMDATABANK.org::::EMD-0519::::</label>
        <annotation_details>Small conformation of apo CRISPR_Csm complex</annotation_details>
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