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    <admin>
        <current_status>
            <date>2024-10-09</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2016-12-08</deposition>
            <header_release>2017-02-08</header_release>
            <map_release>2017-04-26</map_release>
            <update>2024-10-09</update>
        </key_dates>
        <title>E. coli CTP synthase CC mutant filament (product-bound)</title>
        <authors_list>
            <author>Kollman JM</author>
            <author>Lynch EM</author>
        </authors_list>
        <keywords>nucleotide metabolism, metabolic filament, PROTEIN FIBRIL, LIGASE</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Lynch EM</author>
                    <author order="2">Hicks DR</author>
                    <author order="3">Shepherd M</author>
                    <author order="4">Endrizzi JA</author>
                    <author order="5">Maker A</author>
                    <author order="6">Hansen JM</author>
                    <author order="7">Barry RM</author>
                    <author order="8">Gitai Z</author>
                    <author order="9">Baldwin EP</author>
                    <author order="10">Kollman JM</author>
                    <title>Human CTP synthase filament structure reveals the active enzyme conformation.</title>
                    <journal_abbreviation>Nat. Struct. Mol. Biol.</journal_abbreviation>
                    <country>US</country>
                    <volume>24</volume>
                    <first_page>507</first_page>
                    <last_page>514</last_page>
                    <year>2017</year>
                    <external_references type="PUBMED">28459447</external_references>
                    <external_references type="DOI">doi:10.1038/nsmb.3407</external_references>
                    <external_references type="ISSN">1545-9985</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-8504</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>5u6r</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>E. coli CTP synthase CC mutant filament</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>E. coli CTP synthase CC mutant filament</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Disulfide-crosslinked E. coli CTP synthase filaments assembled in non-reducing buffer, bound to CTP and ADP</details>
                <natural_source database="NCBI">
                    <organism ncbi="562">Escherichia coli</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>CTP synthase</name>
                <natural_source database="NCBI">
                    <organism ncbi="562">Escherichia coli</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.06044698</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MTTNYIFVTGGVVSSLGKGIAAASLAAILEARGLNVTIMKLDPYINVDPGTMSPIQHGEVFVTEDGAETDLDLGHYERFI
RTKMSRRNNFTTGRIYSDVLRKERRGDYLGATVQVIPHITNAIKERVLEGGEGHDVVLVEIGGTVGDIESLPFLEAIRQM
AVEIGREHTLFMHLTLVPYMAASGEVKTKPTQHSVKELLSIGIQPDILICRSDRAVPANERAKIALFCNVPEKAVISLKD
VDSIYKIPGLLKSQGLDDYICKRFSLNCPEANLSEWEQVIFEEANPVSEVTIGMVGKYIELPDAYKSVIEALKHGGLKNR
VSVNIKLIDSQDVETRGVEILKGLDAILVPGGFGYRGVEGMITTARFARENNIPYLGICLGMQVALIDYARHVANMENAN
STEFVPDCKYPVVALITEWRDENGNVEVRSEKSDLGGTMRLGAQQCQLVDDSLVRQLYNAPTIVERHRHRYEVNNMLLKQ
IEDAGLRVAGRSGDDQLVEIIEVPNHPWFVACQFHPEFTSTPRDGHPLFAGFVKAASEFQKRQAK</string>
                    <external_references type="UNIPROTKB">B7MLA1</external_references>
                </sequence>
                <ec_number>6.3.4.2</ec_number>
            </protein_or_peptide>
            <ligand macromolecule_id="2">
                <name>CYTIDINE-5'-TRIPHOSPHATE</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000483156</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <formula>CTP</formula>
            </ligand>
            <ligand macromolecule_id="3">
                <name>ADENOSINE-5'-DIPHOSPHATE</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000427201</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <formula>ADP</formula>
            </ligand>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <concentration units="mg/mL">0.15</concentration>
                    <buffer>
                        <ph>8.0</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </vitrification>
                    <details>Filaments were assembled by dialysis in non-reducing buffer (50 mM Na-HEPES, pH 8.0). Products CTP (0.6 mM) and ADP (1.5 mM) were added to filaments.</details>
                </helical_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <helical_microscopy microscopy_id="1">
                    <microscope>FEI TECNAI F20</microscope>
                    <illumination_mode>OTHER</illumination_mode>
                    <imaging_mode>BRIGHT FIELD</imaging_mode>
                    <electron_source>FIELD EMISSION GUN</electron_source>
                    <acceleration_voltage units="kV">200</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>
                            <detector_mode>COUNTING</detector_mode>
                            <average_electron_dose_per_image units="e/Å^2">45.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </helical_microscopy>
            </microscopy_list>
            <helical_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">82.1</delta_z>
                            <delta_phi units="deg">48.2</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">5.7</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>SPIDER</name>
                        </software>
                        <software>
                            <name>hsearch_lorentz</name>
                        </software>
                    </software_list>
                    <number_images_used>31170</number_images_used>
                </final_reconstruction>
                <startup_model type_of_model="OTHER">
                    <details>Cylinder</details>
                </startup_model>
                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                    <software_list>
                        <software>
                            <name>SPIDER</name>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="32001">
        <file>emd_8513.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>200</col>
            <row>200</row>
            <sec>200</sec>
        </dimensions>
        <origin>
            <col>-100</col>
            <row>-100</row>
            <sec>-100</sec>
        </origin>
        <spacing>
            <x>200</x>
            <y>200</y>
            <z>200</z>
        </spacing>
        <cell>
            <a units="Å">252.0</a>
            <b units="Å">252.0</b>
            <c units="Å">252.0</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>-3.784991</minimum>
            <maximum>7.626205</maximum>
            <average>0.000000000183376</average>
            <std>0.60962296</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.26</x>
            <y units="Å">1.26</y>
            <z units="Å">1.26</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>2.1</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-8513::::</label>
        <annotation_details>E. coli CTP synthase CC mutant filament (product-bound)</annotation_details>
    </map>
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