<?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-4452">
    <admin>
        <current_status>
            <date>2024-11-13</date>
            <code>REL</code>
            <processing_site>PDBe</processing_site>
        </current_status>
        <sites>
            <deposition>PDBe</deposition>
            <last_processing>PDBe</last_processing>
        </sites>
        <key_dates>
            <deposition>2018-12-02</deposition>
            <header_release>2018-12-19</header_release>
            <map_release>2019-04-03</map_release>
            <update>2024-11-13</update>
        </key_dates>
        <title>AL amyloid fibril from a lambda 1 light chain</title>
        <authors_list>
            <author>Radamaker L</author>
            <author>Schmidt M</author>
            <author>Faendrich M</author>
            <author>Fritz G</author>
        </authors_list>
        <keywords>amyloid fibril, beta sheet, antibody, heart, PROTEIN FIBRIL</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Radamaker L</author>
                    <author order="2">Lin YH</author>
                    <author order="3">Annamalai K</author>
                    <author order="4">Huhn S</author>
                    <author ORCID="0000-0003-1917-6746" order="5">Hegenbart U</author>
                    <author order="6">Schonland SO</author>
                    <author ORCID="0000-0002-4571-8812" order="7">Fritz G</author>
                    <author order="8">Schmidt M</author>
                    <author order="9">Fandrich M</author>
                    <title>Cryo-EM structure of a light chain-derived amyloid fibril from a patient with systemic AL amyloidosis.</title>
                    <journal_abbreviation>Nat Commun</journal_abbreviation>
                    <country>UK</country>
                    <volume>10</volume>
                    <first_page>1103</first_page>
                    <last_page>1103</last_page>
                    <year>2019</year>
                    <external_references type="PUBMED">30894526</external_references>
                    <external_references type="DOI">doi:10.1038/s41467-019-09032-0</external_references>
                    <external_references type="ISSN">2041-1723</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6ic3</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Amyloid fibril of an antibody lambda 1 light chain</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Amyloid fibril of an antibody lambda 1 light chain</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <details>Extracted fibrils from the heart of a patient suffering from systemic AL amyloidosis</details>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                    <organ>heart</organ>
                    <tissue>heart muscle</tissue>
                </natural_source>
                <molecular_weight>
                    <theoretical units="kDa/nm">2.5</theoretical>
                </molecular_weight>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>lambda 1 light chain fragment, residues 3-118</name>
                <natural_source database="NCBI">
                    <organism ncbi="9606">Homo sapiens</organism>
                    <organ>Heart</organ>
                    <tissue>heart muscle</tissue>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.012177463</theoretical>
                </molecular_weight>
                <number_of_copies>8</number_of_copies>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>VLTQPPSASGTPGQRVTISCSGRSSNIGRNLVKWYQQFPGTAPKLLIYSNDQRPSGVPDRFSGSKSGTSASLAVSGLQSE
DEADYYCAAWDATLNAWVFGGGTKLTVLSQPKAAPS</string>
                </sequence>
            </protein_or_peptide>
        </macromolecule_list>
    </sample>
    <structure_determination_list>
        <structure_determination structure_determination_id="1">
            <method>helical</method>
            <aggregation_state>filament</aggregation_state>
            <specimen_preparation_list>
                <helical_preparation preparation_id="1">
                    <buffer>
                        <ph>7.0</ph>
                        <component>
                            <formula>H2O</formula>
                            <name>distilled water</name>
                        </component>
                    </buffer>
                    <grid>
                        <model>C-flat-1.2/1.3 4C</model>
                        <material>COPPER</material>
                        <mesh>400</mesh>
                        <support_film film_type_id="1">
                            <film_material>CARBON</film_material>
                            <film_topology>HOLEY</film_topology>
                        </support_film>
                        <pretreatment>
                            <type>GLOW DISCHARGE</type>
                            <time units="s">30</time>
                            <atmosphere>OTHER</atmosphere>
                        </pretreatment>
                    </grid>
                    <vitrification>
                        <cryogen_name>ETHANE</cryogen_name>
                        <chamber_humidity units="percentage">80</chamber_humidity>
                        <chamber_temperature units="K">294</chamber_temperature>
                        <instrument>GATAN CRYOPLUNGE 3</instrument>
                        <details>blotted from the backside for 4 s before plunging. </details>
                    </vitrification>
                    <details>Sample in pure water, pH not determined</details>
                </helical_preparation>
            </specimen_preparation_list>
            <microscopy_list>
                <helical_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>
                    <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 K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <detector_mode>COUNTING</detector_mode>
                            <digitization_details>
                                <dimensions>
                                    <width units="pixel">3838</width>
                                    <height units="pixel">3710</height>
                                </dimensions>
                                <frames_per_image>1-30</frames_per_image>
                            </digitization_details>
                            <number_grids_imaged>1</number_grids_imaged>
                            <number_real_images>847</number_real_images>
                            <average_exposure_time units="s">6.0</average_exposure_time>
                            <average_electron_dose_per_image units="e/Å^2">32.0</average_electron_dose_per_image>
                        </image_recording>
                    </image_recording_list>
                </helical_microscopy>
            </microscopy_list>
            <helical_processing image_processing_id="1">
                <image_recording_id>1</image_recording_id>
                <details>Motion-corrected and dose-weighted movie frames</details>
                <final_reconstruction>
                    <number_classes_used>1</number_classes_used>
                    <applied_symmetry>
                        <helical_parameters>
                            <delta_z units="Å">4.81</delta_z>
                            <delta_phi units="deg">0.58</delta_phi>
                            <axial_symmetry>C1</axial_symmetry>
                        </helical_parameters>
                    </applied_symmetry>
                    <algorithm>FOURIER SPACE</algorithm>
                    <resolution units="Å" res_type="BY AUTHOR">3.3</resolution>
                    <resolution_method>FSC 0.143 CUT-OFF</resolution_method>
                    <software_list>
                        <software>
                            <name>RELION</name>
                            <version>2.1.0</version>
                        </software>
                    </software_list>
                    <number_images_used>32677</number_images_used>
                </final_reconstruction>
                <segment_selection>
                    <number_selected>119395</number_selected>
                    <details>manual selection. Sigma contrast 3, lowpass filter 20 A</details>
                </segment_selection>
                <startup_model type_of_model="NONE">
                    <details>Initial model generation in RELION, followed by generation of a "single-fibril model" from two picked fibrils with clearly visible cross-overs</details>
                </startup_model>
                <final_angle_assignment>
                    <type>NOT APPLICABLE</type>
                </final_angle_assignment>
            </helical_processing>
        </structure_determination>
    </structure_determination_list>
    <map format="CCP4" size_kbytes="131073">
        <file>emd_4452.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">333.12</a>
            <b units="Å">333.12</b>
            <c units="Å">333.12</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>-0.042287648</minimum>
            <maximum>0.09975388</maximum>
            <average>0.0001230849</average>
            <std>0.0020280501</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.041</x>
            <y units="Å">1.041</y>
            <z units="Å">1.041</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.056</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-4452::::</label>
    </map>
    <interpretation>
        <modelling_list>
            <modelling>
                <refinement_protocol>OTHER</refinement_protocol>
                <details>Refinement strategy included global minimization and local grid search and ADP were refined. Secondary structure restraints and NCS were applied during refinement.</details>
                <target_criteria>REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)</target_criteria>
                <refinement_space>REAL</refinement_space>
                <overall_bvalue>111.400000000000006</overall_bvalue>
            </modelling>
        </modelling_list>
    </interpretation>
</emd>
