Formate dehydrogenase - heterodisulfide reductase - formylmethanofuran dehydrogenase complex from Methanospirillum hungatei (dimeric, composite structure)

2-AMINO-5,6-DIMERCAPTO-7-METHYL-3,7,8A,9-TETRAHYDRO-8-OXA-1,3,9,10-TETRAAZA-ANTHRACEN-4-ONE GUANOSINE DINUCLEOTIDE

Three-megadalton complex of methanogenic electron-bifurcating and CO 2 -fixing enzymes.

As this is a composite map, the resolution is estimated from the resolutions for masked refinements of several regions, which range from 2.6 to 3.7 A.

Dimeric formate dehydrogenase - heterodisulfide reductase - formylmethanofuran dehydrogenase complex

Preparation in an anaerobic tent (O2 < 20 ppm at all times, nearly always < 2ppm)

CoB--CoM heterodisulfide reductase iron-sulfur subunit A

Formate dehydrogenase, beta subunit (F420)

CoB--CoM heterodisulfide reductase subunit C

CoB--CoM heterodisulfide reductase subunit B

Formylmethanofuran dehydrogenase, subunit G

Formylmethanofuran dehydrogenase, subunit A

Formylmethanofuran dehydrogenase, subunit D

Formylmethanofuran dehydrogenase, subunit F

Formylmethanofuran dehydrogenase, subunit B

MAENTEPRIGVFVCHCGTNIAGSMSIDDVVNYAKTLPYVAVADQYQYMCSTPGQKKIDDAIKEYNLTGVVVAACSPRLHE
PTFRTATKEGGLNPFRFEMANIREQNSWVHMHGMWDEATQKAKDQVRMAVAKAAKLEDLVPKSVPVEKTAMVVGGGVAGM
QAALDLASAGIKTYLIERTPTIGGRMSQLDKTFPTLDCSQCILTPKMVDVGRHPNIEMMTYTEVEKVEGYIGNFDVTLRK
KARGVLTPTEATAKGIVGGGCNGCGDCSAVCPVIKPNPFEMGMAPRKAIYIYHAQVMPLIYTVDFDSCVKCGLCVEACGD
KKAIDLEMQDEFITVKVGTAVLATGYELFPIENKREWGYKQFDNVINALEFERLICASGPTGGHLVRPSDGKTPMKVGFV
LCAGSRDNTGIGKPYCSRFCCMYSLKHAHQIMEKIPGAVAYLFYMDIRSFGKMYEEFYYRIQHEGAKFIRGRVANVLEDK
ETKNLHVFTEDTLLGRPVDVEVDLLVLAAAVQPNEGANELRKKFGVSASQDGWMLEAHPKLNPCGTTTAGVFLAGVCQGP
KDIPDTVAQAEGAASAASIPIHMGEVELEPYFAMCIDELCAGCGMCVNLCPYSALSLGEKNGRTVMVVTEAKCKGCGTCG
GFCPGGAIKMQHFTTPQIVAQIDAFFAGGEQ

MADDWKPQILAIICNWCSYAGADLAGGARIQYPPTVRAIRVMCTGRVDMLFILKAFVEGADGVLVSGCHFGDCHYLEGNY
KAAKRMFMIKNLLRNIGLDDRRFRMTFVSASEGAKWGMVMEDVTNTIKELGPSPIKEFKK

MAAKGDMLYAWAKDAEIQKKGECGGAVTALLKHALETKMVDAVVAIKKGKDLYDAVPTVITNPEDIIQTAGSLHCGTLLI
PKLIKKYLNGAKDMKLAVTCKGCDAMAFYELAKRNQINLDNIIMIGVNCGGSVSPVTARKMISNKFGVDPDTVHKEEIDK
GQFIIEYEGGHKGIKIDELEEEGYGRRSNCRRCKMKIPRQADIAAGNWGVIGDKAGKATFLEICSEKGANLVNSAQSKGA
LEISPADPKGIDIRAKVEKAMFNLGDEWRHRDFEGMGKGKDRLKLMMSESSKCIKCYACVEACPICYCIECSTKKPWYIA
PGVLPTSFMFHLIRFAHVSDSCINCGQCEELCPMEIPNALFMHSQQVEIEKMFGHIPGQDMTPPIHAFVEEKAERARLDA
TGTDSIYTNIFTDE

MAAKSYNIPELDKKLADRRYHLSDTNPEFTQKILKTSRTIANMCYQCGTCTGSCPSAPRSSYRIRLFMRRCVLGLENEAL
TDPDLWLCTTCYSCTDRCPRDIAPTDVIMAMRNLAFKRDIVPKNFLQTVQLIYNSGHGVPNNDVNRAARTKLGLPADPPT
THSYPEFVKGIQKIIDHYELKENADRILKGD

MHEYAFFLGCIAPNRYPGCEASAIKTSEKVGIKLLPLKGASCCPAPGAFGSIDLNVWYAMAARNLVLAEEMKKDIALICN
GCYKSIWEVNHILKHNDELRDNVNEVLAEIDMQFKGTIDVWHLAELYYDDKVCGVQKIKDSVTTPLSGAKVAAHYGCHLM
KPKKERHFGDTENPMWFEELIGALGAEPIQYRNKMQCCGAGGGVRGYDIVHALDITNEKLINIQEAGADAITELCPFCQL
QFDRGQIEIKEKFGDVYNIPVLHYNELLGLAQGMSPQDLALDLHAIDCTPFLQKVL

MSENSEIMKYVATTCPYCGVGCTLNLVVSNGKVVGVEPNQRSPINEGKLCPKGVTCWEHIHSPDRLTTPLIKKDGKFIEA
SWDEALDLVAKNLKVIYDKHGPKGLGFQTSCRTVNEDCYIFQKFARVGFKTNNVDNCARICHGPSVAGLSLSFGSGAATN
GFEDALNADLILIWGSNAVEAHPLAGRRIAQAKKKGIQIIAVDPRYTMTARLADTYVRFNPSTHIALANSMMYWIIKEGL
EDKKFIQDRVNGFEDLKKTVENYADAEAIHGVPLDVVKDIAFRYAKAKNAVIIYCLGITELTTGTDNVRSMGNLALLTGN
VGREGVGVNPLRGQNNVQGACDMGAYPNVYSGYQKCEVAENRAKMEKAWSVTNLPDWYGATLTEQINQCGDEIKGMYILG
LNPVVTYPSSNHVKAQLEKLDFLVVQDIFFTETCQYADVILPGACFAEKDGTFTSGERRINRVRKAVNPPGQAKEDIHII
SELAAKMGFKGFELPTAKDVWDDMRAVTPSMFGATYEKLERPEGICWPCPTEEHPGTPILHREKFATADGKGNLFGIDYR
PPAEVADAEYPFTLMTGRLIFHYHSRTQTDRAADLHREVPESYAQINIEDARRLGIKNNEYIKLKSRRGETTTLARVTDE
VAPGVVYMTMHFADGVNNLTNTVLDPMSKMPELKHCAISIEKVGGN

METITMTLVQEPELFLECYSVTPDLFAGKSLAEIADLPAHEGKIQWKLGDFFKFEGKAGETAADTKIVVNGNVRRMKRFG
QQMTAGEIIINSDADMYIGGWMKGGKITVKGNADSFLGIAMEGGEILIEGDAQNHVGSAYRGDWRGMSGGLIRVKGKAGN
DIGTAMTGGTIIIEGDAFIHVLTHAEGGTVIIKGDVEGRVGGQMVKGDAYILGNLLYPLPGFKKVATVEKEVDGATYTFD
QFIGDLGERKEKKKGEIIYGNIFLKK

MKYRGPEDKLIVFTFYKESKKKRHFFPFFLQKISYLFQNIYLYFLTTFVQSILIDQAGATNMAFAVHVNMERCTGCNNCV
VACPVNALELNTVNPSSTDKIYKVINGDAVILDVKHELCAGCGICVDACPYDVIQLSGQPPQAVEA

MSELLIKNGYIFDPISGIKGDKADIAIKDGKIVDKVSSKAQVIDASGKTVMSGGVDIHTHVSGPKVNTGRMMRPEDKFFR
GSYRGGIIKQGKRMEMGFSIPSTYKTGYAYARMGYTFTNEAAMPPLLAPHVHEEFRDTPILDQAAMPVFGNNWFCFEYIK
NKELENNAAYVAWLLNATKGIGI(KCX)VVNPGGTEAWAWGENCTTINDPVPYFDITPAEIVKGLIETNEYLGLPHSVHI
HGNNLGNPGNYKDTLDTLRLAESYKAKNKFGREQVLHNTHIQFHSYKGTSWADFESGAKEIMDYVNANKNITCDIGQVTL
DETTTMTADGPFEYHLNQLNHIKWANVDVELETGSGVVPYIYDKNIKVCGIQWAIGLELALYAKDLMRVHITTDHPNAGP
FTRYPCVIKWLMSEKARKATLDTMKWKDKVIAASNIASMDRELGLYEIAMMTRAGPAKALGLAAIYGSLVKGADGNVAIY
NLDANDLPSDPELIEAAFQNTAYTIKEGVVVVKDGEIIAEPHKYTLWTKVNMPENAQVMHDIKEKFTKNYTVNLENYAVF
DEHVHNPRAIELDVA

MSELLIKNGYIFDPISGIKGDKADIAIKDGKIVDKVSSKAQVIDASGKTVMSGGVDIHTHVSGPKVNTGRMMRPEDKFFR
GSYRGGIIKQGKRMEMGFSIPSTYKTGYAYARMGYTFTNEAAMPPLLAPHVHEEFRDTPILDQAAMPVFGNNWFCFEYIK
NKELENNAAYVAWLLNATKGIGIKVVNPGGTEAWAWGENCTTINDPVPYFDITPAEIVKGLIETNEYLGLPHSVHIHGNN
LGNPGNYKDTLDTLRLAESYKAKNKFGREQVLHNTHIQFHSYKGTSWADFESGAKEIMDYVNANKNITCDIGQVTLDETT
TMTADGPFEYHLNQLNHIKWANVDVELETGSGVVPYIYDKNIKVCGIQWAIGLELALYAKDLMRVHITTDHPNAGPFTRY
PCVIKWLMSEKARKATLDTMKWKDKVIAASNIASMDRELGLYEIAMMTRAGPAKALGLAAIYGSLVKGADGNVAIYNLDA
NDLPSDPELIEAAFQNTAYTIKEGVVVVKDGEIIAEPHKYTLWTKVNMPENAQVMHDIKEKFTKNYTVNLENYAVFDEHV
HNPRAIELDVA

MKAKKTLNMITQRAVEEGIAMEIGKTSRQYFDACSIIEMNEQDMKELGIMKNTNVRVKSESGEVVVKAVVGRQTCYPGLC
HIRQGVWANQVVPPRTQSTGAPQYSGFPVTVEPVPNERLKTALELVQGAVGMWKGDQ

MSTLFPKYSKTTDGSKVIMEQRLLQQVNNLILDNDICTGCGICSEVCPEEAISVGAVGGVRRGLVDDAASIHVDETKCSY
CGVCVIMCPFSALALKVDGEERLPILEKEGFPTYDKGTAIDQDKCVRCNICDDVCPRDAIDRDVPLFEGEDKEGLAKGQA
VELKIEFKVDDEKCTKCGICGNLCEAINVLHKPFSPEIGKVEGEVIWDEAYCDGCNVCAEACPSEAIKVTRTVVGQKKLG
NVNIIDEDCCTCRWCAINCPTEAITVNKIFEGEITFHAEKCPGGCSTCVDVCPANAIYLPTPKPAKDMKGQIEAKIAVNK
DFCILCGACVNACPGEDIIYLRRDSVKIKGKETDLFKKIKEKLFTPRTSKVKEQPSLAGSVELKAVSQ

MPKVIENVGCPYCGCSCDDVRITVSDDGKDILEVENVCAIGTEIFKHGCSKDRIRLPRMRQPDGSMKDISYEEAIDWTAR
HLLKAKKPLMYGFGSTNCEGQAAAARVMEIAGGMLDNCATICHGPSFLAIFDNGYPSCTLGEVKNRADVIVYWGSNPAHA
HPRHMSRYSIFPRGFFTGKGQKKRTVIVIDPRFTDTANVADYHLQVKQGHDYELFNAFRMVIHGHGKDLPDEVAGIKKET
ILEVAEIMKNARFGTTFFGMGLTHTDGRNHNIDIAISLTRDLNKISKWTIMAMRGHYNIAGPGVVWSWTFGFPYCLDLTK
QNHAHMNPGETSSVDMAMRDEVDMFINIGTDAAAHFPIPAVKQLKKHPWVTIDPSINMASEISDLHIPVCICGVDVGGIV
YRMDNVPIQFRKVIEPPEGVMDDETLLNKIADRMEELKAKGEA

Japan Society for the Promotion of Science (JSPS)

methanogenesis, flavin-based electron bifurcation, CO2-fixation, formate dehydrogenase, OXIDOREDUCTASE