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        <title>Structure of electron bifurcating Nfn-ABC holoenzyme from Caldicellulosiruptor saccharolyticus</title>
        <authors_list>
            <author ORCID="0000-0003-0493-0566">Li H</author>
            <author ORCID="0000-0001-8085-8928">Li H</author>
        </authors_list>
        <keywords>Electron bifurcating enzyme, Nfn-type BfuABC complex, FMN/B1/C1 bifurcation site, OXIDOREDUCTASE</keywords>
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        <citation_list>
            <primary_citation>
                <journal_citation published="true">
                    <author order="1">Li H</author>
                    <author ORCID="0000-0002-3694-1799" order="2">Schut GJ</author>
                    <author ORCID="0000-0002-4441-3152" order="3">Feng X</author>
                    <author ORCID="0000-0002-9796-5014" order="4">Adams MWW</author>
                    <author ORCID="0000-0001-8085-8928" order="5">Li H</author>
                    <title>Cryo-EM reveals a composite flavobicluster electron bifurcation site in the Bfu family member NfnABC.</title>
                    <journal_abbreviation>Commun Biol</journal_abbreviation>
                    <country>UK</country>
                    <volume>8</volume>
                    <first_page>239</first_page>
                    <last_page>239</last_page>
                    <year>2025</year>
                    <external_references type="PUBMED">39953182</external_references>
                    <external_references type="DOI">doi:10.1038/s42003-025-07706-8</external_references>
                    <external_references type="ISSN">2399-3642</external_references>
                </journal_citation>
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                <details>Structure of electron bifurcating Nfn-ABC holoenzyme from Caldicellulosiruptor saccharolyticus</details>
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    <sample>
        <name>Csac Nfn-ABC complex</name>
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            <complex_supramolecule supramolecule_id="1">
                <name>Csac Nfn-ABC complex</name>
                <parent>0</parent>
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                </macromolecule_list>
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                    <organism ncbi="44001">Caldicellulosiruptor saccharolyticus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.76</theoretical>
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                <name>Molybdopterin oxidoreductase</name>
                <natural_source database="NCBI">
                    <organism ncbi="44001">Caldicellulosiruptor saccharolyticus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.130025906</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
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                    <recombinant_organism ncbi="44000">Caldicellulosiruptor</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MRLVRVNIDNKEIFAEEGKTILEVAHENNIEIPHLCYDKRLKPYGACGLCVVEIEGSPKLARACSTYVTDKMVIKTDSPR
VRNARKMALELLLSEHRGDCRPPCVLACPAHTDCQGYVGLIANGQFREAVALIKEQLPFPASIGRVCPHPCEEACRRNMV
DQPIAIAELKRFVGDIDLLDDGYIPPIKPKTGKKVAIVGGGPAGLTCAFFLAKEGHDIVVYEAMPKAGGMLRYGIPEYRL
PKGILDKEIELIEKMGVQIKTNMRLGVDISLEYLRKNYDAVFLAVGAWKSSTLGCPGDSAEGVIGGIEFLRKVSMNQPVN
LGQRVLVVGGGNTAMDAARTAIRLGAKEVTVLYRRTREEMPAEDIEVNEAEEEGVKFQFLVAPIEVITDGGRVRALKCQR
MRLGDMDESGRRRPVPIEGAEVIFEADTIISAIGQKVRVEDVEGLELTRHGTIKVDEGTYQTSLEGVFAGGDAVTGPKIA
IEAIAQGKNAARVIDSYLRGKLEPIKEPYYVKQEDLTPEDFKDRERKPRVPLKVANAEERKNNFREITSTMTEKEAIAEA
SRCLECGCMDYFECQLYKYVNQYDVDPQRLSGYKHKRYEPQKHPFIERNPDKCILCGLCIRVCEEVVGVCALGFVNRGFE
TIVKPEFGLPLEETSCISCGQCADICPTGACIGKQPVAKQVPVNTVATKTVCTFCGMGCEMLVETKGNLIFDVSPVQSNE
GMLCAFGRFGIKYVNDKDRILAPLIKVNGELSKTTFDQALIETAKKLQAIRASYGKDSIAIIASQRLTNEEALLLTKLAQ
KLDTTVIGSFDLRESVLDRIFGLNASTNSFDEIYSTDLIVAVGKVAENHAVMGAKLKKAVELGAKLVTINNGETRADERA
IATYKIDNTAFFKATIKALFEMKAVDEDYVSKIAVNLDELKDDVKNVEVTDEASEFAKIIAGAKTAMVIVDEESVSDTTI
GQLANILTLTQKIGRPRCGIIKVTGLGNTQGAWDMGIRMSKEGIVKLINEGKVKAAFIVSEDPQAADKNLGEVLDKLECL
IVADVFLTETGKRADVVLPLVSHVESTGTVTRADGKIQNLNLVLKPKNGLSNLDLLLKLAELFGLQYNLEKLNREMVELL
QNENKYNQQILYTEGFATPDKTVHLFVSKDAPAFVEKAVFDTVKNRFEKYLQDKHLKY</string>
                    <external_references type="UNIPROTKB">A4XH60</external_references>
                </sequence>
            </protein_or_peptide>
            <protein_or_peptide macromolecule_id="2">
                <name>NADH dehydrogenase (Quinone)</name>
                <natural_source database="NCBI">
                    <organism ncbi="44001">Caldicellulosiruptor saccharolyticus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.06353352699999999</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="44000">Caldicellulosiruptor</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MKIRVGLGSCGMAAGGNKVMECIQQELRSRNLDIPVEPTGCIGLCFFEPLVDVIDGDDVYTYGNVTPEMIPKIIESHVIG
KKPLDEFIVSTSFEPYPMLKSQVRIALKNCGRINPEDIDDYIKNGGYEALKKVLTSMTPEEVIEEIKISGLRGRGGAGFP
TWFKWDAARKASGDIKYVVCNADEGDPGAFMDRSILEGDPHAVLEGMTIAAYAIGAKEGYIYVRAEYPLAIKRLEIAIEQ
ARNRNLLGNNILNTNFSFDIKLKKGAGAFVCGEETALIASIEGERGMPRLKPPFPAQSGLWGRPTNINNVETYANVPWII
TNGGKAFASLGTEKSKGTKVFALAGKIKRGGLVEVPMGMSLREVIYNIGGGIKDDKAFKAVQMGGPSGGCIPADLIDTPV
DYESITKTGAIMGSGGMIVMDETTCMVDIARFFLEFTCKESCGKCTYCRVGTRRMLEILDRICNGEGRDGDLELLEELAV
SVKDGSLCGLGQTAPNPVLTTLRYFKDEYIAHIRDKKCPAKQCKALITYSILPEKCTGCGLCARKCPTKAITGERLKPHV
IDQSKCTKCGTCMNVCRFGAVNVE</string>
                    <external_references type="UNIPROTKB">A4XH59</external_references>
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                <ec_number>1.6.99.5</ec_number>
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            <protein_or_peptide macromolecule_id="3">
                <name>NADH dehydrogenase (Ubiquinone), 24 kDa subunit</name>
                <natural_source database="NCBI">
                    <organism ncbi="44001">Caldicellulosiruptor saccharolyticus</organism>
                </natural_source>
                <molecular_weight>
                    <theoretical units="MDa">0.019914065999999998</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
                <recombinant_expression database="NCBI">
                    <recombinant_organism ncbi="44000">Caldicellulosiruptor</recombinant_organism>
                </recombinant_expression>
                <enantiomer>LEVO</enantiomer>
                <sequence>
                    <string>MYMSCPECENRLASNFKNQKVDLSLLDPVLDEYKGEKSNIIAILQKTQEIYRFLPLDALNYISEKTGVKKAKIYGIATFY
AQFRLKPVGKYVILQCQGTACHVNGSEEIKNALCDELNIKPGDTTEDGMFTLEEVACLGCCSLAPVMMINGETYGKLTPD
KAREIIRRIYEREKNV</string>
                    <external_references type="UNIPROTKB">A4XH58</external_references>
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            <ligand macromolecule_id="5">
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            <ligand macromolecule_id="6">
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                <number_of_copies>4</number_of_copies>
                <formula>FAD</formula>
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            <ligand macromolecule_id="7">
                <name>FLAVIN MONONUCLEOTIDE</name>
                <molecular_weight>
                    <theoretical units="MDa">0.00045634399999999997</theoretical>
                </molecular_weight>
                <number_of_copies>4</number_of_copies>
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            <ligand macromolecule_id="8">
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                <molecular_weight>
                    <theoretical units="MDa">6.5409e-05</theoretical>
                </molecular_weight>
                <number_of_copies>8</number_of_copies>
                <formula>ZN</formula>
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                            <name>trehalose</name>
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                            <film_topology>HOLEY</film_topology>
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