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Database: UniProt
Entry: A0A1I2T2D5_9SPHI
LinkDB: A0A1I2T2D5_9SPHI
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ID   A0A1I2T2D5_9SPHI        Unreviewed;       166 AA.
AC   A0A1I2T2D5;
DT   22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT   22-NOV-2017, sequence version 1.
DT   24-JAN-2024, entry version 18.
DE   RecName: Full=NADH-quinone oxidoreductase subunit I {ECO:0000256|HAMAP-Rule:MF_01351};
DE            EC=7.1.1.- {ECO:0000256|HAMAP-Rule:MF_01351};
DE   AltName: Full=NADH dehydrogenase I subunit I {ECO:0000256|HAMAP-Rule:MF_01351};
DE   AltName: Full=NDH-1 subunit I {ECO:0000256|HAMAP-Rule:MF_01351};
GN   Name=nuoI {ECO:0000256|HAMAP-Rule:MF_01351};
GN   ORFNames=SAMN04489864_101177 {ECO:0000313|EMBL:SFG59182.1};
OS   Pedobacter insulae.
OC   Bacteria; Bacteroidota; Sphingobacteriia; Sphingobacteriales;
OC   Sphingobacteriaceae; Pedobacter.
OX   NCBI_TaxID=414048 {ECO:0000313|EMBL:SFG59182.1, ECO:0000313|Proteomes:UP000199666};
RN   [1] {ECO:0000313|EMBL:SFG59182.1, ECO:0000313|Proteomes:UP000199666}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 18684 {ECO:0000313|EMBL:SFG59182.1,
RC   ECO:0000313|Proteomes:UP000199666};
RA   de Groot N.N.;
RL   Submitted (OCT-2016) to the EMBL/GenBank/DDBJ databases.
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:0000256|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:0000256|HAMAP-Rule:MF_01351};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_01351};
CC       Note=Binds 2 [4Fe-4S] clusters per subunit. {ECO:0000256|HAMAP-
CC       Rule:MF_01351};
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:0000256|HAMAP-Rule:MF_01351}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000256|HAMAP-Rule:MF_01351};
CC       Peripheral membrane protein {ECO:0000256|HAMAP-Rule:MF_01351}.
CC   -!- SIMILARITY: Belongs to the complex I 23 kDa subunit family.
CC       {ECO:0000256|ARBA:ARBA00010277, ECO:0000256|HAMAP-Rule:MF_01351}.
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DR   EMBL; FOPP01000001; SFG59182.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A1I2T2D5; -.
DR   STRING; 414048.SAMN04489864_101177; -.
DR   OrthoDB; 9808559at2; -.
DR   Proteomes; UP000199666; Unassembled WGS sequence.
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:SF20; NADH DEHYDROGENASE [UBIQUINONE] IRON-SULFUR PROTEIN 8, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR10849; NADH DEHYDROGENASE UBIQUINONE IRON-SULFUR PROTEIN 8, MITOCHONDRIAL; 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 {ECO:0000256|ARBA:ARBA00022485, ECO:0000256|HAMAP-Rule:MF_01351};
KW   Cell membrane {ECO:0000256|HAMAP-Rule:MF_01351};
KW   Iron {ECO:0000256|ARBA:ARBA00023004, ECO:0000256|HAMAP-Rule:MF_01351};
KW   Iron-sulfur {ECO:0000256|ARBA:ARBA00023014, ECO:0000256|HAMAP-
KW   Rule:MF_01351}; Membrane {ECO:0000256|HAMAP-Rule:MF_01351};
KW   Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW   Rule:MF_01351}; NAD {ECO:0000256|HAMAP-Rule:MF_01351};
KW   Quinone {ECO:0000256|HAMAP-Rule:MF_01351};
KW   Reference proteome {ECO:0000313|Proteomes:UP000199666};
KW   Translocase {ECO:0000256|ARBA:ARBA00022967, ECO:0000256|HAMAP-
KW   Rule:MF_01351}; Ubiquinone {ECO:0000256|HAMAP-Rule:MF_01351}.
FT   DOMAIN          65..94
FT                   /note="4Fe-4S ferredoxin-type"
FT                   /evidence="ECO:0000259|PROSITE:PS51379"
FT   DOMAIN          111..140
FT                   /note="4Fe-4S ferredoxin-type"
FT                   /evidence="ECO:0000259|PROSITE:PS51379"
FT   BINDING         74
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01351"
FT   BINDING         77
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01351"
FT   BINDING         80
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01351"
FT   BINDING         84
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01351"
FT   BINDING         120
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01351"
FT   BINDING         123
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01351"
FT   BINDING         126
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01351"
FT   BINDING         130
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01351"
SQ   SEQUENCE   166 AA;  19014 MW;  D12AB66939BB403F CRC64;
     MESLSNKKKV LEQKPLNLAE RMYLPAIVKG LGTTMSHFFK KSSTIKYPEQ EREFSINWRG
     MHSLKRDEEG RERCTACGLC ALSCPAEAIT MIAAERKAEE KDLYREEKYA AVYEINMLRC
     IFCGLCEEAC PKEAIYLDGP IVPSDYLRKD FIYGKDKLVE APLEAK
//
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