<?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-10109">
    <admin>
        <current_status>
            <date>2024-05-22</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2019-07-04</deposition>
            <header_release>2019-07-17</header_release>
            <map_release>2020-03-18</map_release>
            <update>2024-05-22</update>
        </key_dates>
        <title>Structure of beta-Galactosidase from Thermotoga maritima</title>
        <authors_list>
            <author>Miguez-Amil S</author>
            <author>Jimenez-Ortega E</author>
        </authors_list>
        <keywords>BETA-GALACTOSIDASE, CARBOHYDRATE, GLUCOSYL HYDROLASE, THERMOTOGA MARITIMA, TRANSGLYCOSYLATION, IMMOBILIZATION, CRYOEM, GRAPHENE-OXIDE, GALACTOOLIGOSACCHARIDES, HYDROLASE</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Miguez Amil S</author>
                    <author order="2">Jimenez-Ortega E</author>
                    <author order="3">Ramirez-Escudero M</author>
                    <author order="4">Talens-Perales D</author>
                    <author order="5">Marin-Navarro J</author>
                    <author ORCID="0000-0001-9912-0640" order="6">Polaina J</author>
                    <author order="7">Sanz-Aparicio J</author>
                    <author ORCID="0000-0002-7941-0357" order="8">Fernandez-Leiro R</author>
                    <title>The cryo-EM Structure ofThermotoga maritimabeta-Galactosidase: Quaternary Structure Guides Protein Engineering.</title>
                    <journal_abbreviation>Acs Chem.Biol.</journal_abbreviation>
                    <country>US</country>
                    <volume>15</volume>
                    <first_page>179</first_page>
                    <last_page>188</last_page>
                    <year>2020</year>
                    <external_references type="PUBMED">31874027</external_references>
                    <external_references type="DOI">doi:10.1021/acschembio.9b00752</external_references>
                    <external_references type="ISSN">1554-8937</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6s6z</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Map of beta-Galactosidase from Thermotoga maritima</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Map of beta-Galactosidase from Thermotoga maritima</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Map from Relion3: Refined 3D after postprocessing using the deposited mask and automatic filtering/sharpening. Sharpened by LocScale</details>
                <natural_source database="NCBI">
                    <organism ncbi="243274">Thermotoga maritima MSB8</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">1.02</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Beta-galactosidase</name>
                <natural_source database="NCBI">
                    <organism ncbi="243274">Thermotoga maritima MSB8</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.127653539</theoretical>
                </molecular_weight>
                <number_of_copies>8</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>PYEWENPQLVSEGTEKSHASFIPYLDPFSGEWEYPEEFISLNGNWRFLFAKNPFEVPEDFFSEKFDDSNWDEIEVPSNWE
MKGYGKPIYTNVVYPFEPNPPFVPKDDNPTGVYRRWIEIPEDWFKKEIFLHFEGVRSFFYLWVNGKKIGFSKDSCTPAEF
RLTDVLRPGKNLITVEVLKWSDGSYLEDQDMWWFAGIYRDVYLYALPKFHIRDVFVRTDLDENYRNGKIFLDVEMRNLGE
EEEKDLEVTLITPDGDEKTLVKETVKPEDRVLSFAFDVKDPKKWSAETPHLYVLKLKLGEDEKKVNFGFRKIEIKDGTLL
FNGKPLYIKGVNRHEFDPDRGHAVTVERMIQDIKLMKQHNINTVRTSHYPNQTKWYDLCDYFGLYVIDEANIESHGIDWD
PEVTLANRWEWEKAHFDRIKRMVERDKNHPSIIFWSLGNEAGDGVNFEKAALWIKKRDNTRLIHYEGTTRRGESYYVDVF
SLMYPKMDILLEYASKKREKPFIMCEYAHAMGNSVGNLKDYWDVIEKYPYLHGGCIWDWVDQGIRKKDENGREFWAYGGD
FGDTPNDGNFCINGVVLPDRTPEPELYEVKKVYQNVKIRQVSKDTYEVENRYLFTNLEMFDGAWKIRKDGEVIEEKTFKI
FAEPGEKRLLKIPLPEMDDSEYFLEISFSLSEDTPWAEKGHVVAWEQFLLKAPAFEKKSISDGVSLREDGKHLTVEAKDT
VYVFSKLTGLLEQILHRRKKILKSPVVPNFWRVPTDNDIGNRMPQRLAIWKRASKERKLFKMHWKKEENRVSVHSVFQLP
GNSWVYTTYTVFGNGDVLVDLSLIPAEDVPEIPRIGFQFTVPEEFGTVEWYGRGPHETYWDRKESGLFARYRKAVGEMMH
RYVRPQETGNRSDVRWFALSDGETKLFVSGMPQIDFSVWPFSMEDLERVQHISELPERDFVTVNVDFRQMGLGGDDSWGA
MPHLEYRLLPKPYRFSFRMRISEEIPSWRVLAAIPETLHVEMSSEDVIREGDTLRVKFSLLNDTPLSKEKQVVLFVDGNE
YSVRRVVIPPFKKEELVFKVEGLKKGEHLIHTNLNTRKTIYVR</string>
                    <external_references type="UNIPROTKB">Q56307</external_references>
                </sequence>
                <ec_number>3.2.1.23</ec_number>
            </protein_or_peptide>
            <ligand macromolecule_id="2">
                <name>MAGNESIUM ION</name>
                <molecular_weight>
                    <theoretical units="MDa">2.4305e-05</theoretical>
                </molecular_weight>
                <number_of_copies>8</number_of_copies>
                <formula>MG</formula>
            </ligand>
            <ligand macromolecule_id="3">
                <name>water</name>
                <molecular_weight>
                    <theoretical units="MDa">1.8015e-05</theoretical>
                </molecular_weight>
                <number_of_copies>1384</number_of_copies>
                <formula>HOH</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">0.03</concentration>
                    <buffer>
                        <ph>6.0</ph>
                        <component>
                            <concentration units="mM">50.0</concentration>
                            <formula>NaH2PO4</formula>
                            <name>Sodium Phosphate Buffer</name>
                        </component>
                        <component>
                            <concentration units="mM">50.0</concentration>
                            <formula>NaCl</formula>
                            <name>Sodium Chloryde</name>
                        </component>
                        <component>
                            <concentration units="mM">2.0</concentration>
                            <formula>C4H10O2S2</formula>
                            <name>Dithiothreitol</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>Quantifoil R2/2</model>
                        <material>COPPER</material>
                        <mesh>400</mesh>
                        <support_film film_type_id="1">
                            <film_material>GRAPHENE OXIDE</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">45</time>
                            <atmosphere>AIR</atmosphere>
                            <pressure units="kPa">30.0</pressure>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">90</chamber_humidity>
                        <chamber_temperature units="K">277.15</chamber_temperature>
                        <instrument>FEI VITROBOT MARK II</instrument>
                    </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>
                    <c2_aperture_diameter units="µm">70.0</c2_aperture_diameter>
                    <nominal_cs units="mm">2.7</nominal_cs>
                    <nominal_defocus_min units="µm">1.0</nominal_defocus_min>
                    <calibrated_defocus_min units="µm">0.4</calibrated_defocus_min>
                    <nominal_defocus_max units="µm">2.0</nominal_defocus_max>
                    <calibrated_defocus_max units="µm">2.6</calibrated_defocus_max>
                    <nominal_magnification>120000.0</nominal_magnification>
                    <calibrated_magnification>20895.0</calibrated_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>FEI FALCON III (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">4096</width>
                                    <height units="pixel">4096</height>
                                </dimensions>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>3600</number_real_images>
                            <average_exposure_time units="s">25.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">35.0</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>
                <particle_selection>
                    <number_selected>229079</number_selected>
                </particle_selection>
                <startup_model type_of_model="INSILICO MODEL">
                    <insilico_model>SGD in relion3.0</insilico_model>
                </startup_model>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <point_group>D4</point_group>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">2.0</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0</version>
                        </software>
                    </software_list>
                    <details>Standard CTF correction inside RELION's reconstruction</details>
                    <number_images_used>154632</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0</version>
                        </software>
                    </software_list>
                </initial_angle_assignment>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0</version>
                        </software>
                    </software_list>
                </final_angle_assignment>
                <final_three_d_classification>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3.0</version>
                        </software>
                    </software_list>
                </final_three_d_classification>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="536871">
        <file>emd_10109.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>512</col>
            <row>512</row>
            <sec>512</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>512</x>
            <y>512</y>
            <z>512</z>
        </spacing>
        <cell>
            <a units="Å">343.04</a>
            <b units="Å">343.04</b>
            <c units="Å">343.04</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>-0.21666068</minimum>
            <maximum>1.0043567</maximum>
            <average>0.0063757556</average>
            <std>0.041183587</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.67</x>
            <y units="Å">0.67</y>
            <z units="Å">0.67</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.2</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-10109::::</label>
        <annotation_details>Map from Relion3 Refine3D after postprocessing using the deposited mask and automatic filtering/sharpening, and sharpened with LocScale</annotation_details>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>OTHER</refinement_protocol>
                <refinement_space>RECIPROCAL</refinement_space>
            </modelling>
        </modelling_list>
        <segmentation_list>
            <segmentation>
                <file>emd_10109_msk_1.map</file>
            </segmentation>
        </segmentation_list>
        <half_map_list>
            <half_map format="CCP4" size_kbytes="536871">
                <file>emd_10109_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>512</col>
                    <row>512</row>
                    <sec>512</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>512</x>
                    <y>512</y>
                    <z>512</z>
                </spacing>
                <cell>
                    <a units="Å">340.992</a>
                    <b units="Å">340.992</b>
                    <c units="Å">340.992</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>-0.02399328</minimum>
                    <maximum>0.07666768</maximum>
                    <average>-0.00019214953</average>
                    <std>0.0038236184</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.666</x>
                    <y units="Å">0.666</y>
                    <z units="Å">0.666</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-10109::::</label>
                <annotation_details>Half map 2 from Relion3</annotation_details>
            </half_map>
            <half_map format="CCP4" size_kbytes="536871">
                <file>emd_10109_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>512</col>
                    <row>512</row>
                    <sec>512</sec>
                </dimensions>
                <origin>
                    <col>0</col>
                    <row>0</row>
                    <sec>0</sec>
                </origin>
                <spacing>
                    <x>512</x>
                    <y>512</y>
                    <z>512</z>
                </spacing>
                <cell>
                    <a units="Å">340.992</a>
                    <b units="Å">340.992</b>
                    <c units="Å">340.992</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>-0.023017941</minimum>
                    <maximum>0.07865538</maximum>
                    <average>-0.00019124463</average>
                    <std>0.003820844</std>
                </statistics>
                <pixel_spacing>
                    <x units="Å">0.666</x>
                    <y units="Å">0.666</y>
                    <z units="Å">0.666</z>
                </pixel_spacing>
                <contour_list>
                    <contour primary="true">
                        <source>AUTHOR</source>
                    </contour>
                </contour_list>
                <label>::::EMDATABANK.org::::EMD-10109::::</label>
                <annotation_details>Half map 2 from Relion3</annotation_details>
            </half_map>
        </half_map_list>
    </interpretation>
</emd>
