NUON2_AQUAE
ID NUON2_AQUAE Reviewed; 488 AA.
AC O67391;
DT 09-FEB-2010, integrated into UniProtKB/Swiss-Prot.
DT 01-AUG-1998, sequence version 1.
DT 03-AUG-2022, entry version 123.
DE RecName: Full=NADH-quinone oxidoreductase subunit N 2 {ECO:0000255|HAMAP-Rule:MF_00445};
DE EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_00445};
DE AltName: Full=NADH dehydrogenase I subunit N 2 {ECO:0000255|HAMAP-Rule:MF_00445};
DE AltName: Full=NDH-1 subunit N 2 {ECO:0000255|HAMAP-Rule:MF_00445};
GN Name=nuoN2 {ECO:0000255|HAMAP-Rule:MF_00445}; OrderedLocusNames=aq_1383;
OS Aquifex aeolicus (strain VF5).
OC Bacteria; Aquificae; Aquificales; Aquificaceae; Aquifex.
OX NCBI_TaxID=224324;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=VF5;
RX PubMed=9537320; DOI=10.1038/32831;
RA Deckert G., Warren P.V., Gaasterland T., Young W.G., Lenox A.L.,
RA Graham D.E., Overbeek R., Snead M.A., Keller M., Aujay M., Huber R.,
RA Feldman R.A., Short J.M., Olsen G.J., Swanson R.V.;
RT "The complete genome of the hyperthermophilic bacterium Aquifex aeolicus.";
RL Nature 392:353-358(1998).
CC -!- FUNCTION: NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur
CC (Fe-S) centers, to quinones in the respiratory chain. The immediate
CC electron acceptor for the enzyme in this species is believed to be
CC ubiquinone. Couples the redox reaction to proton translocation (for
CC every two electrons transferred, four hydrogen ions are translocated
CC across the cytoplasmic membrane), and thus conserves the redox energy
CC in a proton gradient. {ECO:0000255|HAMAP-Rule:MF_00445}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a quinone + 5 H(+)(in) + NADH = a quinol + 4 H(+)(out) +
CC NAD(+); Xref=Rhea:RHEA:57888, ChEBI:CHEBI:15378, ChEBI:CHEBI:24646,
CC ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:132124;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00445};
CC -!- SUBUNIT: NDH-1 is composed of 14 different subunits. Subunits NuoA, H,
CC J, K, L, M, N constitute the membrane sector of the complex.
CC {ECO:0000255|HAMAP-Rule:MF_00445}.
CC -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC Rule:MF_00445}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_00445}.
CC -!- SIMILARITY: Belongs to the complex I subunit 2 family.
CC {ECO:0000255|HAMAP-Rule:MF_00445}.
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DR EMBL; AE000657; AAC07354.1; -; Genomic_DNA.
DR PIR; D70420; D70420.
DR RefSeq; NP_213955.1; NC_000918.1.
DR RefSeq; WP_010880893.1; NC_000918.1.
DR AlphaFoldDB; O67391; -.
DR SMR; O67391; -.
DR STRING; 224324.aq_1383; -.
DR EnsemblBacteria; AAC07354; AAC07354; aq_1383.
DR KEGG; aae:aq_1383; -.
DR PATRIC; fig|224324.8.peg.1082; -.
DR eggNOG; COG1007; Bacteria.
DR HOGENOM; CLU_007100_1_4_0; -.
DR InParanoid; O67391; -.
DR OMA; HFWVPEV; -.
DR OrthoDB; 1664448at2; -.
DR Proteomes; UP000000798; Chromosome.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:InterPro.
DR GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR GO; GO:0042773; P:ATP synthesis coupled electron transport; IEA:InterPro.
DR HAMAP; MF_00445; NDH1_NuoN_1; 1.
DR InterPro; IPR010096; NADH-Q_OxRdtase_suN/2.
DR InterPro; IPR001750; ND/Mrp_mem.
DR Pfam; PF00361; Proton_antipo_M; 1.
DR TIGRFAMs; TIGR01770; NDH_I_N; 1.
PE 3: Inferred from homology;
KW Cell inner membrane; Cell membrane; Membrane; NAD; Quinone;
KW Reference proteome; Translocase; Transmembrane; Transmembrane helix;
KW Transport; Ubiquinone.
FT CHAIN 1..488
FT /note="NADH-quinone oxidoreductase subunit N 2"
FT /id="PRO_0000391099"
FT TRANSMEM 18..38
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 45..65
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 81..101
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 110..130
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 135..155
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 169..189
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 210..230
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 242..262
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 274..294
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 308..328
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 331..351
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 375..395
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 412..434
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 458..478
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
SQ SEQUENCE 488 AA; 54265 MW; 64EFE37967ED5435 CRC64;
MDLRALIGVI EIPDLKKFLP EFILLLLAFI LFTLELFIKG KERRLVLNVV SYVGYFSVLM
SLLIPWMYKG DTFYGNFTND PLAVTVKIFA VLITLAILPF ASSYFSAKKS FYGEFYYILA
FTLLGVFVLA STYNLIILYV ALELVSVGFY ILTALLRGST EAKEGAFKYL ILGGLSIALA
SYGAAFMYIY SGSLDLREIL TYQGKDIHYL VLGLVFFLIG LAVKIGAVPF HYWVPDAYQG
APTPVTALMA SVGKLAFFIP LVRVMPLVQE KFSLVWTITV GVIAALTMLY GNLVALVQKD
VKRLLAYSSI AHSGYIMAGA AVAKVIGMKA VIYFLVAYAV MSAGAFLVLA LMEKNPEWQN
YMENFYGLRF NAPYIAFAFF VYMVALLGVP PTVGFVGKAL VFMALSFDKL WWLAFIMILS
AAISTGYYIR LVVVMYMHER EKEIRSAPSH LGEKFSLFAL TLASVLLGVL PSLVWFLIKQ
SAENLFTG
