NU4C2_SYNE7
ID NU4C2_SYNE7 Reviewed; 534 AA.
AC Q31LR3;
DT 01-JUL-2008, integrated into UniProtKB/Swiss-Prot.
DT 06-DEC-2005, sequence version 1.
DT 03-AUG-2022, entry version 79.
DE RecName: Full=NAD(P)H-quinone oxidoreductase chain 4 2 {ECO:0000255|HAMAP-Rule:MF_00491};
DE EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_00491};
DE AltName: Full=NAD(P)H dehydrogenase I, chain 4 2 {ECO:0000255|HAMAP-Rule:MF_00491};
DE AltName: Full=NDH-1, chain 4 2 {ECO:0000255|HAMAP-Rule:MF_00491};
GN Name=ndhD2 {ECO:0000255|HAMAP-Rule:MF_00491};
GN OrderedLocusNames=Synpcc7942_1976;
OS Synechococcus elongatus (strain PCC 7942 / FACHB-805) (Anacystis nidulans
OS R2).
OC Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus.
OX NCBI_TaxID=1140;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7942 / FACHB-805;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA Hammon N., Israni S., Pitluck S., Schmutz J., Larimer F., Land M.,
RA Kyrpides N., Lykidis A., Richardson P.;
RT "Complete sequence of chromosome 1 of Synechococcus elongatus PCC 7942.";
RL Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: NDH-1 shuttles electrons from NAD(P)H, via FMN and iron-
CC sulfur (Fe-S) centers, to quinones in the respiratory chain. The
CC immediate electron acceptor for the enzyme in this species is believed
CC to be plastoquinone. Couples the redox reaction to proton translocation
CC (for every two electrons transferred, four hydrogen ions are
CC translocated across the cytoplasmic membrane), and thus conserves the
CC redox energy in a proton gradient. {ECO:0000255|HAMAP-Rule:MF_00491}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a plastoquinone + (n+1) H(+)(in) + NADH = a plastoquinol + n
CC H(+)(out) + NAD(+); Xref=Rhea:RHEA:42608, Rhea:RHEA-COMP:9561,
CC Rhea:RHEA-COMP:9562, ChEBI:CHEBI:15378, ChEBI:CHEBI:17757,
CC ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:62192;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00491};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=a plastoquinone + (n+1) H(+)(in) + NADPH = a plastoquinol + n
CC H(+)(out) + NADP(+); Xref=Rhea:RHEA:42612, Rhea:RHEA-COMP:9561,
CC Rhea:RHEA-COMP:9562, ChEBI:CHEBI:15378, ChEBI:CHEBI:17757,
CC ChEBI:CHEBI:57783, ChEBI:CHEBI:58349, ChEBI:CHEBI:62192;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00491};
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC Rule:MF_00491}; Multi-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_00491}.
CC -!- SIMILARITY: Belongs to the complex I subunit 4 family.
CC {ECO:0000255|HAMAP-Rule:MF_00491}.
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DR EMBL; CP000100; ABB58006.1; -; Genomic_DNA.
DR RefSeq; WP_011244430.1; NC_007604.1.
DR AlphaFoldDB; Q31LR3; -.
DR SMR; Q31LR3; -.
DR STRING; 1140.Synpcc7942_1976; -.
DR PRIDE; Q31LR3; -.
DR EnsemblBacteria; ABB58006; ABB58006; Synpcc7942_1976.
DR KEGG; syf:Synpcc7942_1976; -.
DR eggNOG; COG1008; Bacteria.
DR HOGENOM; CLU_007100_4_0_3; -.
DR OMA; ITRWGNQ; -.
DR OrthoDB; 535707at2; -.
DR BioCyc; MetaCyc:SYNPCC7942_1976-MON; -.
DR BioCyc; SYNEL:SYNPCC7942_1976-MON; -.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0031676; C:plasma membrane-derived thylakoid 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_00491; NDH1_NuoM; 1.
DR InterPro; IPR022997; NADH_Q_OxRdtase_chain4.
DR InterPro; IPR010227; NADH_Q_OxRdtase_chainM/4.
DR InterPro; IPR003918; NADH_UbQ_OxRdtase.
DR InterPro; IPR001750; ND/Mrp_mem.
DR PANTHER; PTHR43507; PTHR43507; 1.
DR Pfam; PF00361; Proton_antipo_M; 1.
DR PRINTS; PR01437; NUOXDRDTASE4.
DR TIGRFAMs; TIGR01972; NDH_I_M; 1.
PE 3: Inferred from homology;
KW Membrane; NAD; NADP; Plastoquinone; Quinone; Thylakoid; Translocase;
KW Transmembrane; Transmembrane helix.
FT CHAIN 1..534
FT /note="NAD(P)H-quinone oxidoreductase chain 4 2"
FT /id="PRO_0000343259"
FT TRANSMEM 6..26
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 38..58
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 93..113
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 117..137
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 138..158
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 171..191
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 210..230
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 245..265
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 279..299
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 313..333
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 335..355
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 377..399
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
FT TRANSMEM 419..439
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00491"
SQ SEQUENCE 534 AA; 58645 MW; D94FEE71C4153AC2 CRC64;
MEIGTFPWLT TIILLPIVAA LFIPLLPDRD GKGTTIRWYS LIVGLVDFIL LVVAFWTSYD
FSNPDLQLVE SYAWVPQIGL NWSVGADGLS MPLILLTGFI STLAMLAAWP VTFKTRFFYF
LMLAMYGGQI LVFAVQDLLV FFFAWELELI PVYLLLAIWG GKRRQYAATK FILYTAGSSL
FILVASLAMA FSGDVISFDF QTLAAKEYAI GFQLLLYAGF LIAYGVKLPI VPLHTWLPDA
HGEATAPVHM LLAGILLKMG GYALFRMNAG MLPEAHARFA PILVLLGVVN ILYAALTSFA
QRNLKRKIAY SSISHMGFVL IGLGSFTQLG LSGSMLQMVS HGLIGASLFF LVGATYDRTH
TLMLDEMGGV GQKMRKMFAM WTTCAMASLA LPGMSGFVAE LMVFVGFATS DAYGLPFKVV
VISLAAIGVI LTPIYLLSML REIFFGPENK TLTEHETLVD AEPREVYIIA CLLVPIIGIG
LYPKLTTQVY DATLVQLTER LRSAVPVIAQ QAEASRDRLS HFPGQAHRQA PPLG
