<?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-21377">
    <admin>
        <current_status>
            <date>2024-11-06</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2020-02-11</deposition>
            <header_release>2020-03-04</header_release>
            <map_release>2020-03-04</map_release>
            <update>2024-11-06</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)</funding_body>
                <code>R01AI089728</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Cryo-electron microscopy structure of mouse coronavirus spike protein complexed with its murine receptor</title>
        <authors_list>
            <author>Shang J</author>
            <author>Wan YS</author>
        </authors_list>
        <keywords>MHV spike, CEACAM1a, Complex, Glycoprotein, Viral protein</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0003-2600-6059" order="1">Shang J</author>
                    <author order="2">Wan Y</author>
                    <author ORCID="0000-0003-1829-0117" order="3">Liu C</author>
                    <author order="4">Yount B</author>
                    <author ORCID="0000-0001-5742-2341" order="5">Gully K</author>
                    <author ORCID="0000-0001-9061-3828" order="6">Yang Y</author>
                    <author ORCID="0000-0001-8505-5905" order="7">Auerbach A</author>
                    <author ORCID="0000-0001-8813-6663" order="8">Peng G</author>
                    <author ORCID="0000-0001-6827-8701" order="9">Baric R</author>
                    <author ORCID="0000-0002-1958-366X" order="10">Li F</author>
                    <title>Structure of mouse coronavirus spike protein complexed with receptor reveals mechanism for viral entry.</title>
                    <journal_abbreviation>Plos Pathog.</journal_abbreviation>
                    <country>US</country>
                    <volume>16</volume>
                    <first_page>e1008392</first_page>
                    <last_page>e1008392</last_page>
                    <year>2020</year>
                    <external_references type="PUBMED">32150576</external_references>
                    <external_references type="DOI">doi:10.1371/journal.ppat.1008392</external_references>
                    <external_references type="ISSN">1553-7374</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6vsj</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>MHV Spike and CEACAM1a Complex</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>MHV Spike and CEACAM1a Complex</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="11142">Murine coronavirus (strain A59)</organism>
                    <strain>A59</strain>
                </natural_source>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="2">
                <name>Spike glycoprotein</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="10090">Mus musculus</organism>
                </natural_source>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="3">
                <name>Carcinoembryonic antigen-related cell adhesion molecule 1</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Spike glycoprotein</name>
                <natural_source database="NCBI">
                    <organism ncbi="11142">Murine coronavirus (strain A59)</organism>
                    <strain>A59</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.141118797</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="274590">Baculovirus expression vector pFastBac1-HM</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MKFLVNVALVFMVVYISYIYAYIGDFRCIQLVNSNGANVSAPSISTETVEVSQGLGTYYVLDRVYLNATLLLTGYYPVDG
SKFRNLALRGTNSVSLSWFQPPYLNQFNDGIFAKVQNLKTSTPSGATAYFPTIVIGSLFGYTSYTVVIEPYNGVIMASVC
QYTICQLPYTDCKPNTNGNKLIGFWHTDVKPPICVLKRNFTLNVNADAFYFHFYQHGGTFYAYYADKPSATTFLFSVYIG
DILTQYYVLPFICNPTAGSTFAPRYWVTPLVKRQYLFNFNQKGVITSAVDCASSYTSEIKCKTQSMLPSTGVYELSGYTV
QPVGVVYRRVANLPACNIEEWLTARSVPSPLNWERKTFQNCNFNLSSLLRYVQAESLFCNNIDASKVYGRCFGSISVDKF
AVPRSRQVDLQLGNSGFLQTANYKIDTAATSCQLHYTLPKNNVTINNHNPSSWNRRYGFNDAGVFGKNQHDVVYAQQCFT
VRSSFCPCAQPDIVSPCTTQTKPKSAFVNVGDHCEGLGVLEDNCGNADPHKGCICANNSFIGWSHDTCLVNDRCQIFANI
LLNGINSGTTCSTDLQLPNTEVVTGICVKYDLYGITGQGVFKEVKADYYNSWQTLLYDVNGNLNGFRDLTTNKTYTIRSC
YSGRVSAAFHKDAPEPALLYRNINCSYVFSNNISREENPLNYFDSYLGCVVNADNRTDEALPNCDLRMGAGLCVDYSKSR
RAHRSVSTGYRLTTFEPYTPMLVNDSVQSVDGLYEMQIPTNFTIGHHEEFIQTRSPKVTIDCAAFVCGDNTACRQQLVEY
GSFCVNVNAILNEVNNLLDNMQLQVASALMQGVTISSRLPDGISGPIDDINFSPLLGCIGSTCAEDGNGPSAIRGRSAIE
DLLFDKVKLSDVGFVEAYNNCTGGQEVRDLLCVQSFNGIKVLPPVLSESQISGYTTGATAAAMFPPWSAAAGVPFSLSVQ
YRINGLGVTMNVLSENQKMIASAFNNALGAIQDGFDATNSALGKIQSVVNANAEALNNLLNQLSNRFGAISASLQEILTR
LEAVEAKAQIDRLINGRLTALNAYISKQLSDSTLIKVSAAQAIEKVNECVKSQTTRINFCGNGNHILSLVQNAPYGLYFI
HFSYVPISFTTANVSPGLCISGDRGLAPKAGYFVQDDGEWKFTGSSYYYPEPITDKNSVIMSSCAVNYTKAPEVFLNTSI
PNPPDFKEELDKWFKNQTSIAPDLSLDFEKLNVTLIKRMKQIEDKIEEIESKQKKIENEIARIKKIKHHHHHHHH</string>
                    <external_references type="UNIPROTKB">P11224</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Carcinoembryonic antigen-related cell adhesion molecule 1</name>
                <natural_source database="NCBI">
                    <organism ncbi="10090">Mus musculus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.023678690999999998</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="274590">Baculovirus expression vector pFastBac1-HM</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>EVTIEAVPPQVAEDNNVLLLVHNLPLALGAFAWYKGNTTAIDKEIARFVPNSNMNFTGQAYSGREIIYSNGSLLFQMITM
KDMGVYTLDMTDENYRRTQATVRFHVHQPVTQPFLQVTNTTVKELDSVTLTCLSNDIGANIQWLFNSQSLQLTERMTLSQ
NNSILRIDPIKREDAGEYQCEISNPVSVRRSNSIKLDIIFDPHHHHHH</string>
                    <external_references type="UNIPROTKB">P31809</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="3">
                <name>2-acetamido-2-deoxy-beta-D-glucopyranose</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000221208</theoretical>
                </molecular_weight>
                <number_of_copies>12</number_of_copies>
                <formula>NAG</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">0.3</concentration>
                    <buffer>
                        <ph>7.4</ph>
                        <component>
                            <concentration units="mM">20.0</concentration>
                            <name>Tris-HCl</name>
                        </component>
                        <component>
                            <concentration units="mM">200.0</concentration>
                            <name>NaCl</name>
                        </component>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </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>
                            <detector_mode>SUPER-RESOLUTION</detector_mode>
                            <average_electron_dose_per_image units="e/Å^2">77.0</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>
                    <applied_symmetry>
                        <point_group>C3</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.94</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>82923</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>OTHER</type>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>OTHER</type>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="131073">
        <file>emd_21377.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>320</col>
            <row>320</row>
            <sec>320</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>320</x>
            <y>320</y>
            <z>320</z>
        </spacing>
        <cell>
            <a units="Å">339.19998</a>
            <b units="Å">339.19998</b>
            <c units="Å">339.19998</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>-0.042848907</minimum>
            <maximum>0.08298864</maximum>
            <average>-0.00014359807</average>
            <std>0.0025173603</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.06</x>
            <y units="Å">1.06</y>
            <z units="Å">1.06</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.00869</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-21377::::</label>
        <annotation_details>CryoEM density map of MHV spike ectodomain complex with its receptor CEACAM1a</annotation_details>
    </map>
    <interpretation>
        <segmentation_list>
            <segmentation>
                <file>emd_21377_msk_1.map</file>
            </segmentation>
        </segmentation_list>
    </interpretation>
</emd>
