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        <sites>
            <deposition>RCSB</deposition>
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        <key_dates>
            <deposition>2019-09-26</deposition>
            <header_release>2019-10-23</header_release>
            <map_release>2019-11-20</map_release>
            <update>2025-06-04</update>
        </key_dates>
        <grant_support>
            <grant_reference>
                <funding_body>Howard Hughes Medical Institute (HHMI)</funding_body>
                <country>United States</country>
            </grant_reference>
            <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_support>
        <title>Structural basis of COMPASS eCM recognition of an unmodified nucleosome</title>
        <authors_list>
            <author>Hsu PL</author>
            <author>Shi H</author>
        </authors_list>
        <keywords>Complex, methyltransferase, epigenetics, chromatin, nucleosome, TRANSFERASE-STRUCTURAL PROTEIN-DNA complex</keywords>
    </admin>
    <crossreferences>
        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Hsu PL</author>
                    <author order="2">Shi H</author>
                    <author order="3">Leonen C</author>
                    <author order="4">Kang J</author>
                    <author order="5">Chatterjee C</author>
                    <author order="6">Zheng N</author>
                    <title>Structural Basis of H2B Ubiquitination-Dependent H3K4 Methylation by COMPASS.</title>
                    <journal_abbreviation>Mol.Cell</journal_abbreviation>
                    <country>US</country>
                    <volume>76</volume>
                    <first_page>712</first_page>
                    <year>2019</year>
                    <external_references type="PUBMED">31733991</external_references>
                    <external_references type="DOI">doi:10.1016/j.molcel.2019.10.013</external_references>
                    <external_references type="ISSN">1097-2765</external_references>
                    <external_references type="CSD">2168</external_references>
                    <external_references type="ASTM">MOCEFL</external_references>
                </journal_citation>
            </primary_citation>
        </citation_list>
        <emdb_list>
            <emdb_reference>
                <emdb_id>EMD-20767</emdb_id>
                <relationship>
                    <other>other EM volume</other>
                </relationship>
            </emdb_reference>
        </emdb_list>
        <pdb_list>
            <pdb_reference>
                <pdb_id>6ugm</pdb_id>
                <relationship>
                    <in_frame>FULLOVERLAP</in_frame>
                </relationship>
            </pdb_reference>
        </pdb_list>
    </crossreferences>
    <sample>
        <name>Yeast COMPASS eCM bound to an unmodified nucleosome</name>
        <supramolecule_list>
            <complex_supramolecule supramolecule_id="1">
                <name>Yeast COMPASS eCM bound to an unmodified nucleosome</name>
                <parent>0</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>4</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>5</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>6</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>7</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>8</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>9</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>10</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>11</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>12</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>13</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>14</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <molecular_weight>
                    <theoretical units="MDa">0.45</theoretical>
                </molecular_weight>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="2">
                <name>nucleosome</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>1</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>2</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>3</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>4</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>5</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>6</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>7</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>11</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
            </complex_supramolecule>
            <complex_supramolecule supramolecule_id="3">
                <name>COMPASS eCM</name>
                <parent>1</parent>
                <macromolecule_list>
                    <macromolecule>
                        <macromolecule_id>8</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>9</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>10</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>12</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>13</macromolecule_id>
                    </macromolecule>
                    <macromolecule>
                        <macromolecule_id>14</macromolecule_id>
                    </macromolecule>
                </macromolecule_list>
                <natural_source database="NCBI">
                    <organism ncbi="284590">Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)</organism>
                </natural_source>
            </complex_supramolecule>
        </supramolecule_list>
        <macromolecule_list>
            <protein_or_peptide macromolecule_id="1">
                <name>Histone H3</name>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.015275879000000001</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>ARTKQTARKSTGGKAPRKQLATKAARKSAPATGGVKKPHRYRPGTVALREIRRYQKSTELLIRKLPFQRLVREIAQDFKT
DLRFQSSAVMALQEASEAYLVGLFEDTNLCGIHAKRVTIMPKDIQLARRIRGERA</string>
                    <external_references type="UNIPROTKB">Q92133</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>Histone H4</name>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.011263230999999999</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>SGRGKGGKGLGKGGAKRHRKVLRDNIQGITKPAIRRLARRGGVKRISGLIYEETRGVLKVFLENVIRDAVTYTEHAKRKT
VTAMDVVYALKRQGRTLYGFGG</string>
                    <external_references type="UNIPROTKB">P62799</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="3">
                <name>Histone H2A</name>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.01169465</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>AKAKTRSSRAGLQFPVGRVHRLLRKGNYAERVGAGAPVYLAAVLEYLTAEILELAGNAARDNKKTRIIPRHLQLAVRNDE
ELNKLLGRVTIAQGGVLPNIQSVLLPK</string>
                    <external_references type="UNIPROTKB">Q6AZJ8</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="4">
                <name>Histone H2B</name>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.013848096999999998</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>PEPAKSAPAPKKGSKKAVTKTQKKDGKKRRKTRKESYAIYVYKVLKQVHPDTGISSKAMSIMNSFVNDVFERIAGEASRL
AHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSAK</string>
                    <external_references type="UNIPROTKB">A0A1L8FQ56</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="5">
                <name>Histone H2B 1.1</name>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.013834069999999999</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>PEPAKSAPAPKKGSKKAVTKTQKKDGKKRRKSRKESYAIYVYKVLKQVHPDTGISSKAMSIMNSFVNDVFERIAGEASRL
AHYNKRSTITSREIQTAVRLLLPGELAKHAVSEGTKAVTKYTSAK</string>
                    <external_references type="UNIPROTKB">P02281</external_references>
                </sequence>
            </protein_or_peptide>
            <dna macromolecule_id="6">
                <name>DNA (146-MER)</name>
                <natural_source database="NCBI">
                    <organism ncbi="32630">synthetic construct</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.045114746</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <sequence>
                    <string>(DC)(DT)(DC)(DG)(DA)(DG)(DA)(DA)(DT)(DC)(DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA)
(DG)(DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA)(DA)(DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA)(DG)
(DA)(DC)(DA)(DG)(DC)(DT)(DC)(DT)(DA)(DG)(DC)(DA)(DC)(DC)(DG)(DC)(DT)(DT)(DA)(DA)
(DA)(DC)(DG)(DC)(DA)(DC)(DG)(DT)(DA)(DC)(DG)(DC)(DG)(DC)(DT)(DG)(DT)(DC)(DC)(DC)
(DC)(DC)(DG)(DC)(DG)(DT)(DT)(DT)(DT)(DA)(DA)(DC)(DC)(DG)(DC)(DC)(DA)(DA)(DG)(DG)
(DG)(DG)(DA)(DT)(DT)(DA)(DC)(DT)(DC)(DC)(DC)(DT)(DA)(DG)(DT)(DC)(DT)(DC)(DC)(DA)
(DG)(DG)(DC)(DA)(DC)(DG)(DT)(DG)(DT)(DC)(DA)(DG)(DA)(DT)(DA)(DT)(DA)(DT)(DA)(DC)
(DA)(DT)(DC)(DC)(DG)(DA)(DT)</string>
                </sequence>
                <classification>DNA</classification>
            </dna>
            <dna macromolecule_id="7">
                <name>DNA (146-MER)</name>
                <natural_source database="NCBI">
                    <organism ncbi="32630">synthetic construct</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.045305851999999994</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <sequence>
                    <string>(DA)(DT)(DC)(DG)(DG)(DA)(DT)(DG)(DT)(DA)(DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC)
(DA)(DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG)(DG)(DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG)(DG)(DA)
(DG)(DT)(DA)(DA)(DT)(DC)(DC)(DC)(DC)(DT)(DT)(DG)(DG)(DC)(DG)(DG)(DT)(DT)(DA)(DA)
(DA)(DA)(DC)(DG)(DC)(DG)(DG)(DG)(DG)(DG)(DA)(DC)(DA)(DG)(DC)(DG)(DC)(DG)(DT)(DA)
(DC)(DG)(DT)(DG)(DC)(DG)(DT)(DT)(DT)(DA)(DA)(DG)(DC)(DG)(DG)(DT)(DG)(DC)(DT)(DA)
(DG)(DA)(DG)(DC)(DT)(DG)(DT)(DC)(DT)(DA)(DC)(DG)(DA)(DC)(DC)(DA)(DA)(DT)(DT)(DG)
(DA)(DG)(DC)(DG)(DG)(DC)(DC)(DT)(DC)(DG)(DG)(DC)(DA)(DC)(DC)(DG)(DG)(DG)(DA)(DT)
(DT)(DC)(DT)(DC)(DG)(DA)</string>
                </sequence>
                <classification>DNA</classification>
            </dna>
            <protein_or_peptide macromolecule_id="8">
                <name>Swd3</name>
                <natural_source database="NCBI">
                    <organism ncbi="284590">Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)</organism>
                    <strain>ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.036458879</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7111">Trichoplusia ni</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MCDLDSVSDLTLTLRMLQFDKQVLPASGKISTSCQISPDGELIAICQNTDMLVYEISSSKMMKLTTTHKECINCLCWSPD
SKCIASGSEDFTVEITHIIYGRIRRLMGHTAPVISICYNNKGNILCSSSMDESIKEWHVLSGTALKTMSAHSDAVVSIDI
PKFDSSILSSGSYDGLIRIFDTESGHCLKTLTYDKDWIAEDGVVPISTVKFSRNGKFLLVKSLDNVVKLWEYTRGTVVRT
FLWPHQETKAKLKYNCGLELIYPQGKDPLVISGNDSGSMCVWNVYSKNLVQKIDEKHRNSPLISISASYDKVATLSLNGE
CNLFRVH</string>
                    <external_references type="UNIPROTKB">Q6CLY5</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="9">
                <name>Histone-lysine N-methyltransferase, H3 lysine-4 specific</name>
                <natural_source database="NCBI">
                    <organism ncbi="284590">Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)</organism>
                    <strain>ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.031448504</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7111">Trichoplusia ni</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>YQQIEQNGIIRDNQIALNEKEFDSTLASTTGSFIAEGFKKIPDKLKSSYLLHHRRLAQPLNTVHNHQEQNFMALNGTEST
NQEADLEQDNHNASSRLNRVFQRRFQQDIEAQRAAIGFESDLLSLNQLTKRKKPVTFARSAIHNWGLYALEPIAAKEMII
EYVGESIRQPVAEMREKRYIKSGIGSSYLFRIDENTVIDATKRGGIARFINHCCEPSCTAKIIKVDGRKRIVIYALRDIG
TNEELTYDYKFERETDEGERLPCLCGAPSCKGFLN</string>
                    <external_references type="UNIPROTKB">Q6CIT4</external_references>
                </sequence>
                <ec_number>2.1.1.43</ec_number>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="10">
                <name>Swd1</name>
                <natural_source database="NCBI">
                    <organism ncbi="284590">Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)</organism>
                    <strain>ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.049894656</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7111">Trichoplusia ni</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MANLLLQDPFGVLKEYPEKLTHTLEVPVAAVCVKFSPRGDYLAVGCSNGAIIIYDMDSLKPIAMLGTHSGAHTRSVQSVC
WSNDGRYLWSSGRDWYAKLWDMTQPTKCFQQYKFDGPLWSCHVVRWNVCIVTVVEEPTAYVLTLTDRQNAFHCFPLLEQD
QDISGHGYTLVACPHPTIESIIITGTSKGWINAFQLDLESGFEDKIRCCYEEKIANANIKQIIISPSGTRIAINGSDRTI
RQYQLIVEDNESEGGSSHSVSIELEHKYQDIINRLQWNTIFFSNHSGEYLVASAHGSSAHDLYLWETSSGSLVRVLEGAD
EELLDIDWNFYSMRIASNGFESGWVYMWSIVIPPKWSALAPDFEEVEENIDYQEKENEFDIMDDDNNLQAMTEAEEIAID
LCTPEKYDVRGNDISMPSFVIPIDYEGVIIQQHWAHQEQ</string>
                    <external_references type="UNIPROTKB">Q6CXF3</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="11">
                <name>H3 N-terminus</name>
                <natural_source database="NCBI">
                    <organism ncbi="8355">Xenopus laevis</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.000378444</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="562">Escherichia coli</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>TMQ</string>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="12">
                <name>Spp1</name>
                <natural_source database="NCBI">
                    <organism ncbi="284590">Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)</organism>
                    <strain>ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.03929786699999999</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7111">Trichoplusia ni</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSLPSWCPRYDSRKHDPKTGEEVYCICKKPDTGELMVGCDGCDDWFHFSCLKIPEKYRDLVFSFYCSYCSAGITGPALIN
GGKLPKTLWKRKCRLPECYTECDANSRSKYCSKKHAVQYVQSIVDKLNLPGVDKIALLRQLLNETTSLEEFKTLGRDKLP
EVTSPLSKDQYSKLLENDQHLNKLINEHDELVSVKLSKLNEEDAVIEKYVNWIGEVNERLSPHFNQPTGRKKSKSASKVT
ICGYHNEFTIPRSVEEFLDKLLQLKEDENSNITSVDGVCVKTKCAKHQDWITLSQNDLSEQKDSLENVKRRLDLLISVRT
NQLRISFFEQEMSNRVLPGVKT</string>
                    <external_references type="UNIPROTKB">Q6CRQ4</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="13">
                <name>Bre2</name>
                <natural_source database="NCBI">
                    <organism ncbi="284590">Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)</organism>
                    <strain>ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.047286996</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7111">Trichoplusia ni</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSVPVIPYLDYDIVDLGSDIKKPDFPQLSESHRINEQQYYITEDTPLNKRNFMYQPCAANLMLDKLKYCGTDYFDKSSIN
LMDRSDKLAFSLDDHSVSVSENCGWRSVRSDVCMKEGKIYWEVEVKNVSDTSHIRCGISRREASTETPVGCDFYGYSIRD
KGLQVIHEGRLHTVLKPHEMQAGDRIGFLLTLPSLQSQSEQAMDYSLKRIQELNNDDSRTNKRNKKFNKEFYKFLLRSCE
PTNVVRDQIAIRYKNQLFYESTDYVKTTKPEYYDNRDDMQKFYELENSSFEVFVNGVSHGIAFEGLTPFLPPFSELQYNE
KFYLHHWNKRNVTKGIEIRNKYVNNNRLGYYATLSSFQGGTASIITEAMELKFLPKDVDIKTLNDIYNEQIASDIVWDLI
DEIDT</string>
                    <external_references type="UNIPROTKB">Q6CTQ1</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="14">
                <name>Sdc1</name>
                <natural_source database="NCBI">
                    <organism ncbi="284590">Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37)</organism>
                    <strain>ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37</strain>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.014722625</theoretical>
                </molecular_weight>
                <number_of_copies>2</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="7111">Trichoplusia ni</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MSEPVMENMAPEDVVKLEKEEHIVPDIGVSSISTTEPLSPSGIPRESSGTVTSATAATTEREVSPKKELQIDHDRVDPVA
MIGGSTTRRYLNEHVTKHLLEGMKLIAREKPEDPLRVLGQFLIDASEMNQKPSS</string>
                    <external_references type="UNIPROTKB">Q6CPN6</external_references>
                </sequence>
            </protein_or_peptide>
            <ligand macromolecule_id="15">
                <name>S-ADENOSYLMETHIONINE</name>
                <molecular_weight>
                    <theoretical units="MDa">0.000398437</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>SAM</formula>
            </ligand>
            <ligand macromolecule_id="16">
                <name>ZINC ION</name>
                <molecular_weight>
                    <theoretical units="MDa">6.5409e-05</theoretical>
                </molecular_weight>
                <number_of_copies>1</number_of_copies>
                <formula>ZN</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>7.5</ph>
                    </buffer>
                    <grid>
                        <details>unspecified</details>
                    </grid>
                    <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 K2 SUMMIT (4k x 4k)</film_or_detector_model>
                            <average_electron_dose_per_image units="e/Å^2">74.0</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="NONE"/>
                <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>
                    <number_images_used>100905</number_images_used>
                </final_reconstruction>
                <initial_angle_assignment>
                    <type>MAXIMUM LIKELIHOOD</type>
                </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="136049">
        <file>emd_20765.map.gz</file>
        <symmetry>
            <space_group>1</space_group>
        </symmetry>
        <data_type>IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)</data_type>
        <dimensions>
            <col>324</col>
            <row>324</row>
            <sec>324</sec>
        </dimensions>
        <origin>
            <col>0</col>
            <row>0</row>
            <sec>0</sec>
        </origin>
        <spacing>
            <x>324</x>
            <y>324</y>
            <z>324</z>
        </spacing>
        <cell>
            <a units="Å">342.144</a>
            <b units="Å">342.144</b>
            <c units="Å">342.144</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>-0.06289047</minimum>
            <maximum>0.11903959</maximum>
            <average>0.00020239587</average>
            <std>0.0021785435</std>
        </statistics>
        <pixel_spacing>
            <x units="Å">1.056</x>
            <y units="Å">1.056</y>
            <z units="Å">1.056</z>
        </pixel_spacing>
        <contour_list>
            <contour primary="true">
                <level>0.008</level>
                <source>AUTHOR</source>
            </contour>
        </contour_list>
        <label>::::EMDATABANK.org::::EMD-20765::::</label>
        <annotation_details>COMPASS eCM/unmodified ribosome</annotation_details>
    </map>
</emd>
