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        <current_status>
            <date>2020-09-30</date>
            <code>REL</code>
            <processing_site>PDBj</processing_site>
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            <deposition>PDBj</deposition>
            <last_processing>PDBj</last_processing>
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        <key_dates>
            <deposition>2020-09-11</deposition>
            <header_release>2020-09-30</header_release>
            <map_release>2020-09-30</map_release>
            <update>2020-09-30</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Science Foundation (NSF, China)</funding_body>
                <code>31825009</code>
                <country>China</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)</funding_body>
                <code>GM39422; GM44844</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>cryo-EM structure of a pre-catalytic group II intron complex</title>
        <authors_list>
            <author>Liu N</author>
            <author>Dong XL</author>
            <author>Hu CX</author>
            <author>Wang J</author>
            <author>Wang HW</author>
            <author>Belfort M</author>
        </authors_list>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="false">
                    <author order="1">Liu N</author>
                    <author order="2">Dong XL</author>
                    <author order="3">Hu CX</author>
                    <author order="4">Zeng JW</author>
                    <author order="5">Wang JW</author>
                    <author order="6">Wang J</author>
                    <author order="7">Wang HW</author>
                    <author order="8">Belfort M</author>
                    <title>Exon and protein positioning in a pre-catalytic group II intron RNP primed for splicing.</title>
                    <journal_abbreviation>To Be Published</journal_abbreviation>
                    <external_references type="CSD">0353</external_references>
                </journal_citation>
            </primary_citation>
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                <natural_source database="NCBI">
                    <organism ncbi="1359">Lactococcus lactis subsp. cremoris</organism>
                </natural_source>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="1359">Lactococcus lactis subsp. cremoris</recombinant_organism>
                    <recombinant_strain>IL1403</recombinant_strain>
                </recombinant_expression>
            </complex_supramolecule>
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                <name>group II intron- LtrB</name>
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                    <organism ncbi="1359">Lactococcus lactis subsp. cremoris</organism>
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                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">285.15</chamber_temperature>
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                    <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 K2 SUMMIT (4k x 4k)</film_or_detector_model>
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                            <average_electron_dose_per_image units="e/Å^2">50.0</average_electron_dose_per_image>
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                        <image_recording image_recording_id="2">
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                            <average_electron_dose_per_image units="e/Å^2">50.0</average_electron_dose_per_image>
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                <image_recording_id>1</image_recording_id>
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                    <resolution units="Å" res_type="BY AUTHOR">5.1</resolution>
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                    <type>MAXIMUM LIKELIHOOD</type>
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