<?xml version="1.0" encoding="UTF-8"?>
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    <admin>
        <current_status>
            <date>2024-10-23</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2019-11-25</deposition>
            <header_release>2020-01-29</header_release>
            <map_release>2020-07-01</map_release>
            <update>2024-10-23</update>
        </key_dates>
        <title>Structure of NPC1-like intracellular cholesterol transporter 1 (NPC1L1)</title>
        <authors_list>
            <author>Huang CS</author>
            <author>Yu X</author>
        </authors_list>
        <keywords>Cholesterol, Transporter, Tunnel, Sterol, Intestine, Ezetimibe, Sterol-Sensing Domain, LIPID TRANSPORT</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0002-6435-9309" order="1">Huang CS</author>
                    <author order="2">Yu X</author>
                    <author order="3">Fordstrom P</author>
                    <author order="4">Choi K</author>
                    <author order="5">Chung BC</author>
                    <author order="6">Roh SH</author>
                    <author order="7">Chiu W</author>
                    <author order="8">Zhou M</author>
                    <author order="9">Min X</author>
                    <author order="10">Wang Z</author>
                    <title>Cryo-EM structures of NPC1L1 reveal mechanisms of cholesterol transport and ezetimibe inhibition</title>
                    <journal_abbreviation>Sci Adv</journal_abbreviation>
                    <country>US</country>
                    <volume>6</volume>
                    <first_page>eabb1989</first_page>
                    <year>2020</year>
                    <external_references type="DOI">doi:10.1126/sciadv.abb1989</external_references>
                    <external_references type="ISSN">2375-2548</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6v3f</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>NPC1-like intracellular cholesterol transporter 1 (NPC1L1)</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>NPC1-like intracellular cholesterol transporter 1 (NPC1L1)</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="10116">Rattus norvegicus</organism>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>NPC1-like intracellular cholesterol transporter 1</name>
                <natural_source database="NCBI">
                    <organism ncbi="10116">Rattus norvegicus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.14764018799999998</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="9606">Homo sapiens</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>ELYTPKHEAGVCTFYEECGKNPELSGGLTSLSNVSCLSNTPARHVTGEHLALLQRICPRLYNGPNTTFACCSTKQLLSLE
SSMSITKALLTRCPACSDNFVSLHCHNTCSPDQSLFINVTRVVERGAGEPPAVVAYEAFYQRSFAEKAYESCSQVRIPAA
ASLAVGSMCGVYGSALCNAQRWLNFQGDTGNGLAPLDITFHLLEPGQALPDGIQPLNGKIAPCNESQGDDSAVCSCQDCA
ASCPVIPPPEALRPSFYMGRMPGWLALIIIFTAVFVLLSAVLVRLRVVSNRNKNKAEGPQEAPKLPHKHKLSPHTILGRF
FQNWGTRVASWPLTVLALSFIVVIALAAGLTFIELTTDPVELWSAPKSQARKEKSFHDEHFGPFFRTNQIFVTARNRSSY
KYDSLLLGSKNFSGILSLDFLLELLELQERLRHLQVWSPEAERNISLQDICYAPLNPYNTSLSDCCVNSLLQYFQNNRTL
LMLTANQTLNGQTSLVDWKDHFLYCANAPLTFKDGTSLALSCMADYGAPVFPFLAVGGYQGTDYSEAEALIITFSLNNYP
ADDPRMAQAKLWEEAFLKEMESFQRNTSDKFQVAFSAERSLEDEINRTTIQDLPVFAVSYIIVFLYISLALGSYSRCSRV
AVESKATLGLGGVIVVLGAVLAAMGFYSYLGVPSSLVIIQVVPFLVLAVGADNIFIFVLEYQRLPRMPGEQREAHIGRTL
GSVAPSMLLCSLSEAICFFLGALTPMPAVRTFALTSGLAIILDFLLQMTAFVALLSLDSKRQEASRPDVLCCFSTRKLPP
PKEKEGLLLRFFRKIYAPFLLHRFIRPVVMLLFLTLFGANLYLMCNINVGLDQELALPKDSYLIDYFLFLNRYLEVGPPV
YFVTTSGFNFSSEAGMNATCSSAGCKSFSLTQKIQYASEFPDQSYVAIAASSWVDDFIDWLTPSSSCCRLYIRGPHKDEF
CPSTDTSFNCLKNCMNRTLGPVRPTAEQFHKYLPWFLNDPPNIRCPKGGLAAYRTSVNLSSDGQVIASQFMAYHKPLRNS
QDFTEALRASRLLAANITADLRKVPGTDPNFEVFPYTISNVFYQQYLTVLPEGIFTLALCFVPTFVVCYLLLGLDMCSGI
LNLLSIIMILVDTIGLMAVWGISYNAVSLINLVTAVGMSVEFVSHITRSFAVSTKPTRLERAKDATVFMGSAVFAGVAMT
NFPGILILGFAQAQLIQIFFFRLNLLITLLGLLHGLVFLPVVLSYLGPDVNQALVQEEKLASEAAVAPEPSCPQYPSPAD
ADANVNYGFAPELAHGANAARSSLPKSDQKFENLYFQGDYKDDDDKHHHHHHHHHH</string>
                    <external_references type="UNIPROTKB">Q6T3U3</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>10</number_of_copies>
                <formula>NAG</formula>
            </ligand>
            <ligand macromolecule_id="4">
                <name>CHOLESTEROL</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000386654</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>CLR</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">5</concentration>
                    <buffer>
                        <ph>7.5</ph>
                    </buffer>
                    <grid>
                        <model>Quantifoil R1.2/1.3</model>
                        <material>COPPER</material>
                        <mesh>300</mesh>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">45</time>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <instrument>FEI VITROBOT MARK IV</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>
                    <specimen_holder_model>FEI TITAN KRIOS AUTOGRID HOLDER</specimen_holder_model>
                    <cooling_holder_cryogen>NITROGEN</cooling_holder_cryogen>
                    <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">46.76</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="INSILICO MODEL"/>
                <final_reconstruction>
                    <applied_symmetry>
                        <point_group>C1</point_group>
                    </applied_symmetry>
                    <resolution units="Å" res_type="BY AUTHOR">3.7</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>3</version>
                        </software>
                    </software_list>
                    <number_images_used>144908</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>
            </singleparticle_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="131073">
        <file>emd_21035.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">275.84</a>
            <b units="Å">275.84</b>
            <c units="Å">275.84</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>-0.03853866</minimum>
            <maximum>0.074918784</maximum>
            <average>0.000089244386</average>
            <std>0.002086216</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">0.862</x>
            <y units="Å">0.862</y>
            <z units="Å">0.862</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.011</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-21035::::</label>
        <annotation_details>Structure of full-length NPC1L1</annotation_details>
    </map>
</emd>
