ID NUOI_BLOFL Reviewed; 181 AA.
AC Q7VRV9;
DT 11-JUL-2006, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2003, sequence version 1.
DT 27-MAR-2024, entry version 113.
DE RecName: Full=NADH-quinone oxidoreductase subunit I {ECO:0000255|HAMAP-Rule:MF_01351};
DE EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_01351};
DE AltName: Full=NADH dehydrogenase I subunit I {ECO:0000255|HAMAP-Rule:MF_01351};
DE AltName: Full=NDH-1 subunit I {ECO:0000255|HAMAP-Rule:MF_01351};
GN Name=nuoI {ECO:0000255|HAMAP-Rule:MF_01351}; OrderedLocusNames=Bfl486;
OS Blochmannia floridanus.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; ant endosymbionts; Blochmannia.
OX NCBI_TaxID=203907;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=12886019; DOI=10.1073/pnas.1533499100;
RA Gil R., Silva F.J., Zientz E., Delmotte F., Gonzalez-Candelas F.,
RA Latorre A., Rausell C., Kamerbeek J., Gadau J., Hoelldobler B.,
RA van Ham R.C.H.J., Gross R., Moya A.;
RT "The genome sequence of Blochmannia floridanus: comparative analysis of
RT reduced genomes.";
RL Proc. Natl. Acad. Sci. U.S.A. 100:9388-9393(2003).
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_01351}.
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_01351};
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01351};
CC Note=Binds 2 [4Fe-4S] clusters per subunit. {ECO:0000255|HAMAP-
CC Rule:MF_01351};
CC -!- SUBUNIT: NDH-1 is composed of 13 different subunits. Subunits NuoA, H,
CC J, K, L, M, N constitute the membrane sector of the complex.
CC {ECO:0000255|HAMAP-Rule:MF_01351}.
CC -!- SUBCELLULAR LOCATION: Cell inner membrane {ECO:0000255|HAMAP-
CC Rule:MF_01351}; Peripheral membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_01351}.
CC -!- SIMILARITY: Belongs to the complex I 23 kDa subunit family.
CC {ECO:0000255|HAMAP-Rule:MF_01351}.
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DR EMBL; BX248583; CAD83175.1; -; Genomic_DNA.
DR AlphaFoldDB; Q7VRV9; -.
DR SMR; Q7VRV9; -.
DR STRING; 203907.Bfl486; -.
DR KEGG; bfl:Bfl486; -.
DR eggNOG; COG1143; Bacteria.
DR HOGENOM; CLU_067218_4_3_6; -.
DR Proteomes; UP000002192; Chromosome.
DR GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR GO; GO:0005506; F:iron ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0050136; F:NADH dehydrogenase (quinone) activity; IEA:UniProtKB-UniRule.
DR GO; GO:0048038; F:quinone binding; IEA:UniProtKB-KW.
DR Gene3D; 3.30.70.3270; -; 1.
DR HAMAP; MF_01351; NDH1_NuoI; 1.
DR InterPro; IPR017896; 4Fe4S_Fe-S-bd.
DR InterPro; IPR017900; 4Fe4S_Fe_S_CS.
DR InterPro; IPR010226; NADH_quinone_OxRdtase_chainI.
DR NCBIfam; TIGR01971; NuoI; 1.
DR PANTHER; PTHR10849; NADH DEHYDROGENASE UBIQUINONE IRON-SULFUR PROTEIN 8, MITOCHONDRIAL; 1.
DR PANTHER; PTHR10849:SF35; NADH-QUINONE OXIDOREDUCTASE SUBUNIT I; 1.
DR Pfam; PF12838; Fer4_7; 1.
DR SUPFAM; SSF54862; 4Fe-4S ferredoxins; 1.
DR PROSITE; PS00198; 4FE4S_FER_1; 2.
DR PROSITE; PS51379; 4FE4S_FER_2; 2.
PE 3: Inferred from homology;
KW 4Fe-4S; Cell inner membrane; Cell membrane; Iron; Iron-sulfur; Membrane;
KW Metal-binding; NAD; Quinone; Repeat; Translocase; Ubiquinone.
FT CHAIN 1..181
FT /note="NADH-quinone oxidoreductase subunit I"
FT /id="PRO_0000245700"
FT DOMAIN 52..81
FT /note="4Fe-4S ferredoxin-type 1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT DOMAIN 91..120
FT /note="4Fe-4S ferredoxin-type 2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT BINDING 61
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT BINDING 64
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT BINDING 67
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT BINDING 71
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT BINDING 100
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT BINDING 103
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT BINDING 106
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
FT BINDING 110
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01351"
SQ SEQUENCE 181 AA; 20892 MW; 6510EF0CF46186D2 CRC64;
MMKLKEFFIN IISIFRSVYM VGMQAFSKRE TYMYPDVACK LSSRYRGRIV LTRDSAGHER
CVACNLCAVS CPVGCISLKK SENSEGRWYP EFFRINFSRC IFCGMCEEAC PTAAIQLISD
FEMSDYKRSD LVYEKSDLLI SGPGKYKNYD FYQISGVKYS NKYKKESSFE EKPISVKTIL
P
//
