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    <admin composite_map="true">
        <current_status>
            <date>2026-09-09</date>
            <code>REL</code>
            <processing_site>RCSB</processing_site>
        </current_status>
        <revision_history>
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                    <model>
                        <revision_type>INITIAL_RELEASE</revision_type>
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                        <revision_type>INITIAL_RELEASE</revision_type>
                        <provider>REPOSITORY</provider>
                    </metadata>
                </change_list>
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        </revision_history>
        <sites>
            <deposition>RCSB</deposition>
            <last_processing>RCSB</last_processing>
        </sites>
        <key_dates>
            <deposition>2026-03-17</deposition>
            <header_release>2026-09-09</header_release>
            <map_release>2026-09-09</map_release>
            <update>2026-09-09</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)</funding_body>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>The Giovanni Armenise-Harvard Foundation</funding_body>
                <country>United States</country>
            </grant_reference>
            <grant_reference>
                <funding_body>Richard and Susan Smith Family Foundation</funding_body>
                <country>United States</country>
            </grant_reference>
        </grant_support>
        <title>In situ subtomogram average of the transition zone linker in human airway cilia (composite map)</title>
        <authors_list>
            <author>Zhou H</author>
            <author>Brown A</author>
        </authors_list>
        <keywords>Cilia, Transition Zone, TZ linker, Subtomogram Averaging, STRUCTURAL PROTEIN</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Zhou H</author>
                    <author order="2">Brown A</author>
                    <title>In situ structure of the human ciliary transition zone links linker defects to primary ciliary dyskinesia</title>
                    <journal_abbreviation>Science</journal_abbreviation>
                    <country>US</country>
                    <year>2026</year>
                    <external_references type="DOI">doi:10.1126/science.aei5957</external_references>
                    <external_references type="ISSN">1095-9203</external_references>
                    <external_references type="CSD">0038</external_references>
                    <external_references type="ASTM">SCIEAS</external_references>
                </journal_citation>
            </primary_citation>
            <secondary_citation>
                <journal_citation published="true">
                    <author ORCID="0000-0003-3921-3209" order="3">Liebschner D</author>
                    <author ORCID="0000-0002-5052-991X" order="4">Afonine PV</author>
                    <author order="5">Baker ML</author>
                    <author order="6">Bunkoczi G</author>
                    <author ORCID="0000-0003-2492-979X" order="7">Chen VB</author>
                    <author order="8">Croll TI</author>
                    <author ORCID="0000-0002-4871-2096" order="9">Hintze B</author>
                    <author ORCID="0000-0001-6690-8458" order="10">Hung LW</author>
                    <author order="11">Jain S</author>
                    <author order="12">McCoy AJ</author>
                    <author ORCID="0000-0001-8857-9464" order="13">Moriarty NW</author>
                    <author ORCID="0000-0003-3107-2202" order="14">Oeffner RD</author>
                    <author ORCID="0000-0001-9633-6067" order="15">Poon BK</author>
                    <author order="16">Prisant MG</author>
                    <author ORCID="0000-0001-8273-0047" order="17">Read RJ</author>
                    <author ORCID="0000-0002-3311-2944" order="18">Richardson JS</author>
                    <author order="19">Richardson DC</author>
                    <author ORCID="0000-0002-8346-9247" order="20">Sammito MD</author>
                    <author ORCID="0000-0002-0623-3214" order="21">Sobolev OV</author>
                    <author order="22">Stockwell DH</author>
                    <author ORCID="0000-0001-6384-0320" order="23">Terwilliger TC</author>
                    <author order="24">Urzhumtsev AG</author>
                    <author order="25">Videau LL</author>
                    <author order="26">Williams CJ</author>
                    <author ORCID="0000-0001-9333-8219" order="27">Adams PD</author>
                    <title>Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix</title>
                    <journal_abbreviation>Acta Crystallogr.,Sect.D</journal_abbreviation>
                    <country>US</country>
                    <year>2019</year>
                    <external_references type="PUBMED">31588918</external_references>
                    <external_references type="DOI">doi:10.1107/S2059798319011471</external_references>
                    <external_references type="ISSN">2059-7983</external_references>
                    <external_references type="CSD">0353</external_references>
                    <external_references type="ASTM">ABCRE6</external_references>
                </journal_citation>
            </secondary_citation>
        </citation_list>
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                <details>In situ CryoET Structure of the Transition Zone linker in Human Epithelial Cilia</details>
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    </crossreferences>
    <sample>
        <name>Human airway ciliary transition zone (TZ) linker</name>
        <supramolecule_list>
            <organelle_or_cellular_component_supramolecule supramolecule_id="1">
                <name>Human airway ciliary transition zone (TZ) linker</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>4</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
            </organelle_or_cellular_component_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Epithelial cell-transforming sequence 2 oncogene-like</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.1050175</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MESFHTRFSAWTPFSNKSLNRQLFQERVALISHWFDLWTNKQRQEFLFAIFLRCTKSQLRFVQDWFSERMQVAKVDFSTV
LPRFISLYIFSFLSPKDLCAAAQVSWPWKFLTEQDCLWMPKCVKFGWFLPYTPTDNEYGAWKRHYIACVSHLDWLTPREA
AATYGTLNEPKTEDEELLERQREKCLRKRIWEKIALRKKELFKVRPPWVSGTCCSSVLKPRCQPRLSQTVRERVGLHEAL
EKQLVLTSLETLPKRSNISGSHSYPLLSKKNWHGVHKNDDRSSYALRPHFMLISSRIPAYEMVMESVKAGVVSVVYEHSV
TLESLLYLIEKALDGQKAQSIGIFSDGDSREINLLQGYKIGVKNLLRPEVRDFWEKLGSYVATEEEGGHVDFFVPLGASE
AGIEVLSQLSQLTGTFFTAPTGIATGSYQHILSDWLGSQWGKAPSSIYFCESKLQTWSSFTDFLEETLKTVRKQLYPFFK
ELQKSISGRMIGQFMFDTMGMTNILNNQDTAQALADGLMELSKEDSERNVVEDNSWDTKSRLSKNDLNFEALINLERILQ
KDSAEKRARVVRELLQSERKYVQILEIVRDVYVAPLKAALSSNRAILSAANIQIIFCDILQILSLNRQFLDNLRDRLQEW
GPAHCVGEIVTKFGSQLNTYTNFFNNYPVILKTIEKCREMIPAFRTFLKRHDKTIVTKMLSLPELLLYPSRRFEEYLNLL
YAVRLHTPAEHVDRGDLTTAIDQIKKYKGYIDQMKQNITMKDHLSDIQRIIWGCPTLSEVNRYLIRVQDVAQLHCCDEEI
SFSLRLYEHIHDLSLFLFNDALLVSSRGTSHTPFERTSKTTYQFIASVALHRLLIENIPDSKYVKNAFILQGPKYKWICA
TEIEDDKFLWLSVLRNAIKSSMEK</string>
                    <external_references type="UNIPROTKB">Q008S8</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>S-phase kinase-associated protein 1</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.018679965</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MPSIKLQSSDGEIFEVDVEIAKQSVTIKTMLEDLGMDDEGDDDPVPLPNVNAAILKKVIQWCTHHKDDPPPPEDDENKEK
RTDDIPVWDQEFLKVDQGTLFELILAANYLDIKGLLDVTCKTVANMIKGKTPEEIRKTFNIKNDFTEEEEAQVRKENQWC
EEK</string>
                    <external_references type="UNIPROTKB">P63208</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Dynein light chain 1, cytoplasmic</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.010381898999999998</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MCDRKAVIKNADMSEEMQQDSVECATQALEKYNIEKDIAAHIKKEFDKKYNPTWHCIVGRNFGSYVTHETKHFIYFYLGQ
VAILLFKSG</string>
                    <external_references type="UNIPROTKB">P63167</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>Double zinc ribbon and ankyrin repeat-containing protein 1</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.082295812</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MTAGSVCVPQIIPLRVPQPGKANHEIDNNTLLEMKSDTPDVNIYYTLDGSKPEFLKRIGYGENNTFKYIKPITLPDGKIQ
VKAIAVSKDCRQSGIVTKVFHVDYEPPNIVSPEDNVENVLKDSSRQEFKNGFVGSKLKKKYKNSENQRSWNVNLRKFPES
PLEIPAYGGGSGSRPPTRQSQSPGFAHVSGQKCLTSTEIMRIQRETDFLKCAHCLAPRPSDPFARFCQECGSPVPPIFGC
RLPPPEGAQMGLCAECRSLVPMNTPICVVCEAPLALQLQPQASLHLKEKVICRACGTGNPAHLRYCVTCEGALPSSQESM
CSGDKAPPPPTQKGGTISCYRCGRWNLWEASFCGWCGAMLGIPAGCSVCPKCGASNHLSARFCGSCGICVKSLVKLSLDR
SLALAAEEPRPFSESLNIPLPRSDVGTKRDIGTQTVGLFYPSGKLLAKKEQELASQKQRQEKMSDHKPLLTAISPGRGYW
RRQLDHISAHLRCYAQNNPEFRALIAEPRMGKLISATVHEDGCEVSIRLNYSQVSNKNLYLNKAVNFSDHLLSSAAEGDG
GLCGSRSSWVSDYSQSTSDTIEKIKRIKNFKTKTFQEKKEQLIPENRLLLKEVGPTGEGRVSVIEQLLDEGADPNCCDED
NRPVITVAVMNKHHEAIPVLVQRGADIDQQWGPLRNTALHEATLLGLAGRESTATLLGCNASIQKKNAGGQTAYDLALNT
GDDLVTSLFAAKFGQGLEDQLAQTRSLSLDDC</string>
                    <external_references type="UNIPROTKB">Q9NVP4</external_references>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>subtomogramAveraging</method>
            <aggregation_state>cell</aggregation_state>
            <specimen_preparation_list>
                <subtomogram_averaging_preparation preparation_id="1">
                    <buffer>
                        <ph>7.2</ph>
                    </buffer>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                    </vitrification>
                </subtomogram_averaging_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <subtomogram_averaging_microscopy microscopy_id="1">
                    <microscope>TFS 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>
                    <nominal_defocus_min units="µm">2.0</nominal_defocus_min>
                    <nominal_defocus_max units="µm">4.0</nominal_defocus_max>
                    <image_recording_list>
                        <image_recording image_recording_id="1">
                            <film_or_detector_model>FEI FALCON IV (4k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">4.68</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </subtomogram_averaging_microscopy>
            </microscopy_list>
            <subtomogram_averaging_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <final_reconstruction>
                    <resolution units="Å" res_type="BY AUTHOR">9.6</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>5</version>
                        </software>
                    </software_list>
                    <details>The deposited volume is a composite map. The general TZ linker was refined to 9.6 using 12,237 subtomograms. The main part of TZ linker was refined to 8.1 using 6,373 subtomograms. The region of TZ linker interacting with A tubule was refined to 6.9 using 10,395 subtomograms. The region of TZ linker interacting with B tubule was refined to 7.0 using 12,780 subtomograms.</details>
                    <number_subtomograms_used>12237</number_subtomograms_used>
                </final_reconstruction>
                <extraction>
                    <number_tomograms>209</number_tomograms>
                    <number_images_used>66385</number_images_used>
                    <software_list>
                        <software>
                            <name>Warp</name>
                            <version>2</version>
                        </software>
                    </software_list>
                </extraction>
                <ctf_correction>
                    <type>PHASE FLIPPING AND AMPLITUDE CORRECTION</type>
                </ctf_correction>
                <final_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                </final_angle_assignment>
            </subtomogram_averaging_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="46034">
        <file>emd_76173.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>234</col>
            <row>263</row>
            <sec>187</sec>
        </dimensions>
        <origin>
            <col>242</col>
            <row>76</row>
            <sec>137</sec>
        </origin>
        <spacing>
            <x>234</x>
            <y>263</y>
            <z>187</z>
        </spacing>
        <cell>
            <a units="Å">450.216</a>
            <b units="Å">506.012</b>
            <c units="Å">359.788</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>0.0</minimum>
            <maximum>0.024856986</maximum>
            <average>0.0005679599</average>
            <std>0.0019069515</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.924</x>
            <y units="Å">1.924</y>
            <z units="Å">1.924</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.0005</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-76173::::</label>
        <annotation_details>A composite map of TZ linker from human airway cilia</annotation_details>
    </map>
</emd>
