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    <admin>
        <current_status>
            <date>2025-05-21</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <revision_history>
            <revision version="1.0" date="2021-03-17">
                <change_list>
                    <additional_map>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </additional_map>
                    <half_map part="1">
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </half_map>
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                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
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                    <image>
                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </image>
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                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </primary_map>
                </change_list>
            </revision>
            <revision version="1.1" date="2025-05-21">
                <change_list>
                    <metadata>
                        <revision_group>EXPERIMENTAL_SUMMARY</revision_group>
                        <categories>
                            <category>em_admin</category>
                            <category>em_software</category>
                        </categories>
                        <items>
                            <item>_em_admin.last_update</item>
                            <item>_em_software.name</item>
                        </items>
                    </metadata>
                </change_list>
            </revision>
            <revision version="2.0" date="2021-05-05">
                <change_list>
                    <model>
                        <revision_type>COORDINATE_REPLACEMENT</revision_type>
                        <provider>AUTHOR</provider>
                        <description>Sequence discrepancy</description>
                        <details>As noted for 7KOQ and 7KOX, two amino acids are different between our sequence, derived from P36544, and the literature referenced sequence, which was used for building the model (U40583.1). Please correct S35 and S111. Thanks!</details>
                        <revision_group>STRUCTURE_SUMMARY</revision_group>
                        <categories>
                            <category>atom_site</category>
                            <category>em_entity_assembly</category>
                            <category>em_software</category>
                            <category>entity</category>
                            <category>entity_poly</category>
                            <category>entity_poly_seq</category>
                            <category>pdbx_branch_scheme</category>
                            <category>pdbx_entity_branch_descriptor</category>
                            <category>pdbx_entity_branch_link</category>
                            <category>pdbx_entity_branch_list</category>
                            <category>pdbx_nonpoly_scheme</category>
                            <category>pdbx_poly_seq_scheme</category>
                            <category>pdbx_struct_assembly_prop</category>
                            <category>pdbx_struct_conn_angle</category>
                            <category>pdbx_struct_sheet_hbond</category>
                            <category>pdbx_unobs_or_zero_occ_atoms</category>
                            <category>pdbx_unobs_or_zero_occ_residues</category>
                            <category>pdbx_validate_close_contact</category>
                            <category>pdbx_validate_rmsd_angle</category>
                            <category>pdbx_validate_torsion</category>
                            <category>refine_ls_restr</category>
                            <category>software</category>
                            <category>struct</category>
                            <category>struct_asym</category>
                            <category>struct_conf</category>
                            <category>struct_conn</category>
                            <category>struct_conn_type</category>
                            <category>struct_mon_prot_cis</category>
                            <category>struct_ref_seq</category>
                            <category>struct_ref_seq_dif</category>
                            <category>struct_sheet</category>
                            <category>struct_sheet_order</category>
                            <category>struct_sheet_range</category>
                        </categories>
                        <items>
                            <item>_em_entity_assembly.source</item>
                            <item>_em_software.category</item>
                            <item>_entity.formula_weight</item>
                            <item>_entity.pdbx_description</item>
                            <item>_entity_poly.pdbx_seq_one_letter_code</item>
                            <item>_entity_poly.pdbx_seq_one_letter_code_can</item>
                            <item>_entity_poly.pdbx_strand_id</item>
                            <item>_entity_poly_seq.mon_id</item>
                            <item>_pdbx_branch_scheme.asym_id</item>
                            <item>_pdbx_branch_scheme.auth_mon_id</item>
                            <item>_pdbx_branch_scheme.auth_seq_num</item>
                            <item>_pdbx_branch_scheme.entity_id</item>
                            <item>_pdbx_branch_scheme.mon_id</item>
                            <item>_pdbx_branch_scheme.num</item>
                            <item>_pdbx_branch_scheme.pdb_asym_id</item>
                            <item>_pdbx_branch_scheme.pdb_mon_id</item>
                            <item>_pdbx_branch_scheme.pdb_seq_num</item>
                            <item>_pdbx_entity_branch_descriptor.descriptor</item>
                            <item>_pdbx_entity_branch_link.atom_id_2</item>
                            <item>_pdbx_entity_branch_link.comp_id_1</item>
                            <item>_pdbx_entity_branch_link.comp_id_2</item>
                            <item>_pdbx_entity_branch_link.entity_branch_list_num_1</item>
                            <item>_pdbx_entity_branch_link.entity_branch_list_num_2</item>
                            <item>_pdbx_entity_branch_link.entity_id</item>
                            <item>_pdbx_entity_branch_link.leaving_atom_id_2</item>
                            <item>_pdbx_entity_branch_list.comp_id</item>
                            <item>_pdbx_entity_branch_list.entity_id</item>
                            <item>_pdbx_entity_branch_list.num</item>
                            <item>_pdbx_nonpoly_scheme.auth_seq_num</item>
                            <item>_pdbx_poly_seq_scheme.asym_id</item>
                            <item>_pdbx_poly_seq_scheme.auth_mon_id</item>
                            <item>_pdbx_poly_seq_scheme.auth_seq_num</item>
                            <item>_pdbx_poly_seq_scheme.entity_id</item>
                            <item>_pdbx_poly_seq_scheme.mon_id</item>
                            <item>_pdbx_poly_seq_scheme.ndb_seq_num</item>
                            <item>_pdbx_poly_seq_scheme.pdb_ins_code</item>
                            <item>_pdbx_poly_seq_scheme.pdb_mon_id</item>
                            <item>_pdbx_poly_seq_scheme.pdb_seq_num</item>
                            <item>_pdbx_poly_seq_scheme.pdb_strand_id</item>
                            <item>_pdbx_poly_seq_scheme.seq_id</item>
                            <item>_pdbx_struct_assembly_prop.value</item>
                            <item>_pdbx_unobs_or_zero_occ_atoms.label_asym_id</item>
                            <item>_pdbx_unobs_or_zero_occ_residues.label_asym_id</item>
                            <item>_pdbx_validate_close_contact.auth_asym_id_1</item>
                            <item>_pdbx_validate_close_contact.auth_asym_id_2</item>
                            <item>_pdbx_validate_rmsd_angle.angle_deviation</item>
                            <item>_pdbx_validate_rmsd_angle.angle_value</item>
                            <item>_pdbx_validate_torsion.auth_asym_id</item>
                            <item>_pdbx_validate_torsion.auth_comp_id</item>
                            <item>_pdbx_validate_torsion.auth_seq_id</item>
                            <item>_pdbx_validate_torsion.phi</item>
                            <item>_pdbx_validate_torsion.psi</item>
                            <item>_refine_ls_restr.dev_ideal</item>
                            <item>_refine_ls_restr.number</item>
                            <item>_software.version</item>
                            <item>_struct.pdbx_descriptor</item>
                            <item>_struct_asym.entity_id</item>
                            <item>_struct_conf.beg_label_asym_id</item>
                            <item>_struct_conf.end_label_asym_id</item>
                            <item>_struct_mon_prot_cis.auth_asym_id</item>
                            <item>_struct_mon_prot_cis.auth_comp_id</item>
                            <item>_struct_mon_prot_cis.auth_seq_id</item>
                            <item>_struct_mon_prot_cis.label_comp_id</item>
                            <item>_struct_mon_prot_cis.label_seq_id</item>
                            <item>_struct_mon_prot_cis.pdbx_auth_asym_id_2</item>
                            <item>_struct_mon_prot_cis.pdbx_auth_seq_id_2</item>
                            <item>_struct_mon_prot_cis.pdbx_label_seq_id_2</item>
                            <item>_struct_mon_prot_cis.pdbx_omega_angle</item>
                            <item>_struct_ref_seq.db_align_beg</item>
                            <item>_struct_ref_seq.db_align_end</item>
                            <item>_struct_ref_seq.pdbx_auth_seq_align_beg</item>
                            <item>_struct_ref_seq.pdbx_auth_seq_align_end</item>
                            <item>_struct_ref_seq.pdbx_db_accession</item>
                            <item>_struct_ref_seq.pdbx_seq_align_beg_ins_code</item>
                            <item>_struct_ref_seq.pdbx_seq_align_end_ins_code</item>
                            <item>_struct_ref_seq.pdbx_strand_id</item>
                            <item>_struct_ref_seq.ref_id</item>
                            <item>_struct_ref_seq.seq_align_beg</item>
                            <item>_struct_ref_seq.seq_align_end</item>
                            <item>_struct_sheet.number_strands</item>
                        </items>
                    </model>
                </change_list>
            </revision>
            <revision version="2.1" date="2021-05-12">
                <change_list>
                    <model>
                        <revision_group>DATABASE_REFERENCES</revision_group>
                        <categories>
                            <category>citation</category>
                        </categories>
                        <items>
                            <item>_citation.journal_volume</item>
                            <item>_citation.page_first</item>
                        </items>
                    </model>
                </change_list>
            </revision>
            <revision version="2.2" date="2024-11-06">
                <change_list>
                    <model>
                        <revision_group>STRUCTURE_SUMMARY</revision_group>
                        <categories>
                            <category>chem_comp_atom</category>
                            <category>chem_comp_bond</category>
                            <category>database_2</category>
                            <category>em_admin</category>
                            <category>pdbx_entry_details</category>
                            <category>pdbx_modification_feature</category>
                        </categories>
                        <items>
                            <item>_database_2.pdbx_DOI</item>
                            <item>_database_2.pdbx_database_accession</item>
                            <item>_em_admin.current_status</item>
                            <item>_em_admin.last_update</item>
                            <item>_pdbx_entry_details.has_protein_modification</item>
                        </items>
                    </model>
                </change_list>
            </revision>
            <revision version="2.3" date="2025-05-21">
                <change_list>
                    <model>
                        <revision_group>DATA_COLLECTION</revision_group>
                        <categories>
                            <category>em_admin</category>
                            <category>em_software</category>
                        </categories>
                        <items>
                            <item>_em_admin.last_update</item>
                            <item>_em_software.name</item>
                        </items>
                    </model>
                </change_list>
            </revision>
        </revision_history>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2020-11-09</deposition>
            <header_release>2021-03-17</header_release>
            <map_release>2021-03-17</map_release>
            <update>2025-05-21</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of Mental Health (NIH/NIMH)</funding_body>
                <code>NS095899</code>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of Mental Health (NIH/NIMH)</funding_body>
                <code>NS077983</code>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>Alpha-7 nicotinic acetylcholine receptor bound to alpha-bungarotoxin in a resting state.</title>
        <authors_list>
            <author>Noviello CM</author>
            <author>Hibbs RE</author>
        </authors_list>
        <keywords>Cys-loop receptor, MEMBRANE PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Noviello CM</author>
                    <author order="2">Gharpure A</author>
                    <author order="3">Mukhtasimova N</author>
                    <author order="4">Cabuco R</author>
                    <author order="5">Baxter L</author>
                    <author order="6">Borek D</author>
                    <author order="7">Sine SM</author>
                    <author order="8">Hibbs RE</author>
                    <title>Structure and gating mechanism of the alpha 7 nicotinic acetylcholine receptor.</title>
                    <journal_abbreviation>Cell</journal_abbreviation>
                    <volume>184</volume>
                    <first_page>2121</first_page>
                    <year>2021</year>
                    <external_references type="PUBMED">33735609</external_references>
                    <external_references type="DOI">doi:10.1016/j.cell.2021.02.049</external_references>
                    <external_references type="ISSN">1097-4172</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>7koo</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Complex between alpha-bungarotoxin and the human alpha-7 nicotinic acetylcholine receptor</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Complex between alpha-bungarotoxin and the human alpha-7 nicotinic acetylcholine receptor</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="2">
                <name>Neuronal acetylcholine receptor subunit alpha-7,Soluble cytochrome b562 fusion</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="3">
                <name>Alpha-bungarotoxin isoform V31</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>Neuronal acetylcholine receptor subunit alpha-7,Soluble cytochrome b562 fusion</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.063832293</theoretical>
                </molecular_weight>
                <number_of_copies>5</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>EFQRKLYKELVKNYNPLERPVANDSQPLTVYFSLSLLQIMDVDEKNQVLTTNIWLQMSWTDHYLQWNVSEYPGVKTVRFP
DGQIWKPDILLYNSADERFDATFHTNVLVNSSGHCQYLPPGIFKSSCYIDVRWFPFDVQHCKLKFGSWSYGGWSLDLQMQ
EADISGYIPNGEWDLVGIPGKRSERFYECCKEPYPDVTFTVTMRRRTLYYGLNLLIPCVLISALALLVFLLPADSGEKIS
LGITVLLSLTVFMLLVAEIMPATSDSVPLIAQYFASTMIIVGLSVVVTVIVLQYHHHDPDGGKMPKWTRVILLNWCAWFL
RMKRPGEDKVRPACQHKQRRCSLASVEMAGAMADLEDNWETLNDNLKVIEKADNAAQVKDALTKMRAAALDAQKATPPKL
EDKSPDSPEMKDFRHGFDILVGQIDDALKLANEGKVKEAQAAAEQLKTTRNAYIQKYLCGRMACSPTHDEHLLHGGQPPE
GDPDLAKILEEVRYIANRFRCQDESEAVCSEWKFAACVVDRLCLMAFSVFTIICTIGILMSAPNFVEAVSKDFAWSHPQF
EK</string>
                    <external_references type="UNIPROTKB">P36544</external_references>
                    <external_references type="UNIPROTKB">P0ABE7</external_references>
                    <external_references type="UNIPROTKB">P36544</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Alpha-bungarotoxin isoform V31</name>
                <natural_source database="NCBI">
                    <organism ncbi="8616">Bungarus multicinctus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.007721973</theoretical>
                </molecular_weight>
                <number_of_copies>5</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>IVCHTTATSPISAVTCPPGENLCYRKMWCDVFCSSRGKVVELGCAATCPSKKPYEEVTCCSTDKCNPHPKQ</string>
                    <external_references type="UNIPROTKB">P60616</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="5">
                <name>2-acetamido-2-deoxy-beta-D-glucopyranose</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000221208</theoretical>
                </molecular_weight>
                <number_of_copies>5</number_of_copies>
                <formula>NAG</formula>
            </ligand>
            <ligand macromolecule_id="6">
                <name>CALCIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">4.0078e-05</theoretical>
                </molecular_weight>
                <number_of_copies>5</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">
                    <buffer>
                        <ph>7.4</ph>
                    </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 K3 BIOQUANTUM (6k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">61.0</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>
                <ctf_correction>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <startup_model type_of_model="INSILICO MODEL"/>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">3.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <number_images_used>792521</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>RANDOM ASSIGNMENT</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.1</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                </final_angle_assignment>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="67109">
        <file>emd_22979.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>256</col>
            <row>256</row>
            <sec>256</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>256</x>
            <y>256</y>
            <z>256</z>
        </spacing>
        <cell>
            <a units="Å">276.224</a>
            <b units="Å">276.224</b>
            <c units="Å">276.224</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>-0.12901723</minimum>
            <maximum>0.2264349</maximum>
            <average>0.00037004022</average>
            <std>0.0051400177</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.079</x>
            <y units="Å">1.079</y>
            <z units="Å">1.079</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.0132</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-22979::::</label>
        <annotation_details>Alpha-7 nicotinic acetylcholine receptor bound to alpha-bungarotoxin in a resting state primary map</annotation_details>
    </map>
    <interpretation>
        <additional_map_list>
            <additional_map format="CCP4" size_kbytes="67109">
                <file>emd_22979_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>256</col>
                    <row>256</row>
                    <sec>256</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>256</x>
                    <y>256</y>
                    <z>256</z>
                </spacing>
                <cell>
                    <a units="Å">276.224</a>
                    <b units="Å">276.224</b>
                    <c units="Å">276.224</c>
                    <alpha units="deg">90.0</alpha>
                    <beta units="deg">90.0</beta>
                    <gamma units="deg">90.0</gamma>
                </cell>
                <axis_order>
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