<?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-22828">
    <admin>
        <current_status>
            <date>2024-11-13</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2020-10-09</deposition>
            <header_release>2021-03-17</header_release>
            <map_release>2021-03-17</map_release>
            <update>2024-11-13</update>
        </key_dates>
        <title>HCMV prefusion gB in complex with fusion inhibitor WAY-174865</title>
        <authors_list>
            <author>Liu Y</author>
            <author>Heim PK</author>
        </authors_list>
        <keywords>fusogen, prefusion, HCMV, gB, antibody, VIRAL PROTEIN, fusion inhibitor, VIRAL PROTEIN-INHIBITOR complex</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0001-6844-7480" order="1">Liu Y</author>
                    <author ORCID="0000-0002-7089-499X" order="2">Heim KP</author>
                    <author ORCID="0000-0002-1278-4442" order="3">Che Y</author>
                    <author order="4">Chi X</author>
                    <author order="5">Qiu X</author>
                    <author ORCID="0000-0002-1070-3880" order="6">Han S</author>
                    <author ORCID="0000-0003-0671-6360" order="7">Dormitzer PR</author>
                    <author order="8">Yang X</author>
                    <title>Prefusion structure of human cytomegalovirus glycoprotein B and structural basis for membrane fusion.</title>
                    <journal_abbreviation>Sci Adv</journal_abbreviation>
                    <country>US</country>
                    <volume>7</volume>
                    <year>2021</year>
                    <external_references type="PUBMED">33674318</external_references>
                    <external_references type="DOI">doi:10.1126/sciadv.abf3178</external_references>
                    <external_references type="ISSN">2375-2548</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>7kdp</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>HCMV prefusion gB stabilized by a fusion inhibitor</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>HCMV prefusion gB stabilized by a fusion inhibitor</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>SM5-1 FAb is recombinant expressed with 6xHis and Strep sequence at C-terminal as purification tags. The FAb was used to purify the gB protein from lab cultured HCMV virus (Towne strain)In the density map, the FAb is poorly resolved and not modeled</details>
                <natural_source database="NCBI">
                    <organism ncbi="10363">Human cytomegalovirus (strain Towne)</organism>
                    <strain>Towne</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.3</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Envelope glycoprotein B</name>
                <natural_source database="NCBI">
                    <organism ncbi="10363">Human cytomegalovirus (strain Towne)</organism>
                    <strain>Towne</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.10206768799999999</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MESRIWCLVVCVNLCIVCLGAAVSSSSTRGTSATHSHHSSHTTSAAHSRSGSVSQRVTSSQTVSHGVNETIYNTTLKYGD
VVGVNTTKYPYRVCSMAQGTDLIRFERNIVCTSMKPINEDLDEGIMVVYKRNIVAHTFKVRVYQKVLTFRRSYAYIHTTY
LLGSNTEYVAPPMWEIHHINSHSQCYSSYSRVIAGTVFVAYHRDSYENKTMQLMPDDYSNTHSTRYVTVKDQWHSRGSTW
LYRETCNLNCMVTITTARSKYPYHFFATSTGDVVDISPFYNGTNRNASYFGENADKFFIFPNYTIVSDFGRPNSALETHR
LVAFLERADSVISWDIQDEKNVTCQLTFWEASERTIRSEAEDSYHFSSAKMTATFLSKKQEVNMSDSALDCVRDEAINKL
QQIFNTSYNQTYEKYGNVSVFETTGGLVVFWQGIKQKSLVELERLANRSSLNLTHNRTKRSTDGNNATHLSNMESVHNLV
YAQLQFTYDTLRGYINRALAQIAEAWCVDQRRTLEVFKELSKINPSAILSAIYNKPIAARFMGDVLGLASCVTINQTSVK
VLRDMNVKESPGRCYSRPVVIFNFANSSYVQYGQLGEDNEILLGNHRTEECQLPSLKIFIAGNSAYEYVDYLFKRMIDLS
SISTVDSMIALDIDPLENTDFRVLELYSQKELRSSNVFDLEEIMREFNSYKQRVKYVEDKVVDPLPPYLKGLDDLMSGLG
AAGKAVGVAIGAVGGAVASVVEGVATFLKNPFGAFTIILVAIAVVIIIYLIYTRQRRLCMQPLQNLFPYLVSADGTTVTS
GNTKDTSLQAPPSYEESVYNSGRKGPGPPSSDASTAAPPYTNEQAYQMLLALVRLDAEQRAQQNGTDSLDGQTGTQDKGQ
KPNLLDRLRHRKNGYRHLKDSDEEENV</string>
                    <external_references type="UNIPROTKB">P13201</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="2">
                <name>2-acetamido-2-deoxy-beta-D-glucopyranose</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000221208</theoretical>
                </molecular_weight>
                <number_of_copies>30</number_of_copies>
                <formula>NAG</formula>
            </ligand>
            <ligand macromolecule_id="3">
                <name>N-{4-[({(1S)-1-[3,5-bis(trifluoromethyl)phenyl]ethyl}carbamothioyl)amino]phenyl}-1,3-thiazole-4-carboxamide</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000518498</theoretical>
                </molecular_weight>
                <number_of_copies>3</number_of_copies>
                <formula>WCY</formula>
            </ligand>
            <ligand macromolecule_id="4">
                <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">0.8</concentration>
                    <buffer>
                        <ph>7.4</ph>
                        <details>PBS, 0.1 % DDM, 1 mM EDTA, 2 mg/L WAY-174865</details>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                        <support_film film_type_id="1">
                            <film_material>GRAPHENE OXIDE</film_material>
                            <film_topology>CONTINUOUS</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">30</time>
                            <atmosphere>AIR</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">100</chamber_humidity>
                        <chamber_temperature units="K">277</chamber_temperature>
                        <instrument>FEI VITROBOT MARK II</instrument>
                        <details>4 second, -2 force. </details>
                    </vitrification>
                    <details>this sample was monodispersed</details>
                </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>
                    <c2_aperture_diameter units="µm">70.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">0.8</nominal_defocus_min>
                    <nominal_defocus_max units="µm">2.8000000000000003</nominal_defocus_max>
                    <nominal_magnification>18000.0</nominal_magnification>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <alignment_procedure>
                        <coma_free/>
                    </alignment_procedure>
                    <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>
                            <digitization_details>
                                <frames_per_image>1-28</frames_per_image>
                            </digitization_details>
                            <number_grids_imaged>3</number_grids_imaged>
                            <number_real_images>7768</number_real_images>
                            <average_electron_dose_per_image units="e/Å^2">40.0</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>
                <details>the movies are motion corrected dose weighted and averaged with and binned 2x in Fourier space with MotionCor2 program</details>
                <particle_selection>
                    <number_selected>1906220</number_selected>
                    <details>a 20 angstrom low pass filtered postfusion structure was used to generate reference images for the particle auto picking</details>
                </particle_selection>
                <startup_model type_of_model="PDB ENTRY">
                    <pdb_model>
                        <pdb_id>5CXF</pdb_id>
                    </pdb_model>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <point_group>C3</point_group>
                    </applied_symmetry>
                    <algorithm>BACK PROJECTION</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">3.6</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1 beta</version>
                        </software>
                    </software_list>
                    <number_images_used>129837</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing>
                        <angular_sampling units="degrees">7.5</angular_sampling>
                    </projection_matching_processing>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1 beta</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>PROJECTION MATCHING</type>
                    <projection_matching_processing>
                        <angular_sampling units="degrees">1.8</angular_sampling>
                    </projection_matching_processing>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1  beta</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <number_classes>5</number_classes>
                    <average_number_members_per_class>129837.0</average_number_members_per_class>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1 beta</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="87809">
        <file>emd_22828.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>280</col>
            <row>280</row>
            <sec>280</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>280</x>
            <y>280</y>
            <z>280</z>
        </spacing>
        <cell>
            <a units="Å">385.28</a>
            <b units="Å">385.28</b>
            <c units="Å">385.28</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>-0.18670075</minimum>
            <maximum>0.31882638</maximum>
            <average>0.00031225433</average>
            <std>0.0054186704</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.376</x>
            <y units="Å">1.376</y>
            <z units="Å">1.376</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.05</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-22828::::</label>
        <annotation_details>HCMV gB in prefusion conformation</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <initial_model>
                    <access_code>5CXF</access_code>
                    <chain>
                        <source_name>PDB</source_name>
                        <initial_model_type>experimental model</initial_model_type>
                    </chain>
                </initial_model>
                <refinement_protocol>FLEXIBLE FIT</refinement_protocol>
                <refinement_space>REAL</refinement_space>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
