<?xml version="1.0" encoding="UTF-8"?>
<emd xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://ftp.ebi.ac.uk/pub/databases/em_ebi/emdb_related/emdb-schemas/emdb_schemas/v3/v3_0_9_3/emdb.xsd" version="3.0.9.3" emdb_id="EMD-44553">
    <admin>
        <current_status>
            <date>2024-11-27</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2024-04-22</deposition>
            <header_release>2024-11-27</header_release>
            <map_release>2024-11-27</map_release>
            <update>2024-11-27</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)</funding_body>
                <code>R35GM133325</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Streptomyces griseus Family 2B encapsulin shell</title>
        <authors_list>
            <author>Andreas MP</author>
            <author>Giessen TW</author>
        </authors_list>
        <keywords>Encapsulin, nanocompartment, VIRUS LIKE PARTICLE</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Andreas MP</author>
                    <author ORCID="0000-0001-6328-2031" order="2">Giessen TW</author>
                    <title>The biosynthesis of the odorant 2-methylisoborneol is compartmentalized inside a protein shell.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>15</volume>
                    <first_page>9715</first_page>
                    <last_page>9715</last_page>
                    <year>2024</year>
                    <external_references type="PUBMED">39521781</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-024-54175-4</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>9bhu</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Streptomyces griseus Family 2B encapsulin shell</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Streptomyces griseus Family 2B encapsulin shell</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="67263">Streptomyces griseus subsp. griseus</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Nucleotide-binding protein</name>
                <natural_source database="NCBI">
                    <organism ncbi="67263">Streptomyces griseus subsp. griseus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.052014137</theoretical>
                </molecular_weight>
                <details>Residues 1-39, 147-152, and 216-245 are unresolved in the map.</details>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="469008">Escherichia coli BL21(DE3)</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MTVDSTSEARLEVPRQSSLGTAAARNLASTTKSAPQMQEITSRWLLRMLPWVETKGGAYRVNRRLTFTVGDGRVEFVQDG
STVRVIPQELGELALLRDFDDAEVLSAIADRCVQRDFRAGETLVERGTAADELHLIAHGRIGQASAGSYGDEVTLDVLAD
GDRFGEHALLDEDARWSQTATAETSGTLLTLSRADFAAVVANSPALRSHLAAFTARSEQRQNHRGEAEIAMSAGHVGEHE
LPGAFADYELKPREYELSVAQTILRVHTRVADLYNGPMNQTEEQLRLTIEALRERQEHELINNREFGLLHNADFKQRIQT
HSGPPTPDDLDELLCRRRGTKFFLAHPRTIAAMGREFNARGLYPDHTDLGGQQVPAWRGVPILPCGKIPITPERTSSILA
LRTGEEDQGVIGLRQTGLPDEYEPGLSVRFMNIDEKAIISYLVSTYYSAAILVPDAVGVLENVQIANWPR</string>
                    <external_references type="UNIPROTKB">Q54255</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="2">
                <name>CALCIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">4.0078e-05</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>CA</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">2.5</concentration>
                    <buffer>
                        <ph>7.5</ph>
                        <component>
                            <concentration units="mM">150.0</concentration>
                            <formula>NaCl</formula>
                            <name>sodium chloride</name>
                        </component>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <formula>C4H11NO3</formula>
                            <name>tris</name>
                        </component>
                        <details>150 mM NaCl, 20 mM Tris pH 7.5</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>200</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">60</time>
                        </pretreatment>
                        <details>60 seconds at 5 mA under vacuum</details>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">295</chamber_temperature>
                        <instrument>FEI VITROBOT MARK IV</instrument>
                        <details>Blot force: 20
Blot time: 4 seconds. </details>
                    </vitrification>
                </single_particle_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <single_particle_microscopy microscopy_id="1">
                    <microscope>TFS GLACIOS</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">1.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">1.8</nominal_defocus_max>
                    <nominal_magnification>45000.0</nominal_magnification>
                    <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>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">3710</width>
                                    <height units="pixel">3838</height>
                                </dimensions>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <average_exposure_time units="s">5.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">43.22</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>
                <particle_selection>
                    <number_selected>159394</number_selected>
                </particle_selection>
                <startup_model type_of_model="INSILICO MODEL">
                    <insilico_model>Ab-initio model</insilico_model>
                </startup_model>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>I</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">2.71</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4.4.0+231114</version>
                            <processing_details>Homogeneous Refinement</processing_details>
                        </software>
                    </software_list>
                    <details>Homogeneous refinement with I symmetry imposed, per-particle defocus optimization, per-group CTF parameterization, spherical aberration fit enabled, tetrafoil fit enabled, Ewald sphere correction with negative curvature, and minimize over per-particle scale enabled.</details>
                    <number_images_used>135027</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4.4.0+231114</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>cryoSPARC</name>
                            <version>4.4.0+231114</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="340737">
        <file>emd_44553.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>440</col>
            <row>440</row>
            <sec>440</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>440</x>
            <y>440</y>
            <z>440</z>
        </spacing>
        <cell>
            <a units="Å">400.40002</a>
            <b units="Å">400.40002</b>
            <c units="Å">400.40002</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>-0.45272407</minimum>
            <maximum>0.77573323</maximum>
            <average>0.0013752987</average>
            <std>0.03463632</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.91</x>
            <y units="Å">0.91</y>
            <z units="Å">0.91</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.08</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-44553::::</label>
        <annotation_details>Streptomyces griseus Family 2B encapsulin shell</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>Q54255</access_code>
                    <chain>
                        <source_name>AlphaFold</source_name>
                        <initial_model_type>in silico model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
                <details>An AlphaFold-generated model was fit into the map using ChimeraX v1.5. The model was then refined iteratively by alternating rounds of manual refinement in Coot v8.9.1 and real-space refinements using PHENIX v1.20.1-4487.</details>
                <target_criteria>cross-correlation coefficient</target_criteria>
                <refinement_space>REAL</refinement_space>
                <overall_bvalue>127.900000000000006</overall_bvalue>
            </modelling>
        </modelling_list>
        <additional_map_list>
            <additional_map format="CCP4" size_kbytes="340737">
                <file>emd_44553_additional_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>440</col>
                    <row>440</row>
                    <sec>440</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>440</x>
                    <y>440</y>
                    <z>440</z>
                </spacing>
                <cell>
                    <a units="Å">400.40002</a>
                    <b units="Å">400.40002</b>
                    <c units="Å">400.40002</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>-0.4448704</minimum>
                    <maximum>0.78909683</maximum>
                    <average>0.0012425969</average>
                    <std>0.028931629</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.91</x>
                    <y units="Å">0.91</y>
                    <z units="Å">0.91</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-44553::::</label>
                <annotation_details>Homogeneous reconstruction (C1 symmetry) of a 3D class from focused 3D classification containing two cyclic nucleotide binding domains at the 2-fold symmetry axis in the focused mask.</annotation_details>
            </additional_map>
        </additional_map_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="340737">
                <file>emd_44553_half_map_2.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>440</col>
                    <row>440</row>
                    <sec>440</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>440</x>
                    <y>440</y>
                    <z>440</z>
                </spacing>
                <cell>
                    <a units="Å">400.40002</a>
                    <b units="Å">400.40002</b>
                    <c units="Å">400.40002</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>-0.062811635</minimum>
                    <maximum>0.20657124</maximum>
                    <average>0.00021036425</average>
                    <std>0.016258107</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.91</x>
                    <y units="Å">0.91</y>
                    <z units="Å">0.91</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-44553::::</label>
                <annotation_details>Half Map B</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="340737">
                <file>emd_44553_half_map_1.map.gz</file>
                <symmetry>
                    <space_group>1</space_group>
                </symmetry>
                <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
                <dimensions>
                    <col>440</col>
                    <row>440</row>
                    <sec>440</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>440</x>
                    <y>440</y>
                    <z>440</z>
                </spacing>
                <cell>
                    <a units="Å">400.40002</a>
                    <b units="Å">400.40002</b>
                    <c units="Å">400.40002</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>-0.06473098</minimum>
                    <maximum>0.20630455</maximum>
                    <average>0.00021073669</average>
                    <std>0.01627665</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.91</x>
                    <y units="Å">0.91</y>
                    <z units="Å">0.91</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-44553::::</label>
                <annotation_details>Half Map A</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
