NU2C_SYNP2
ID NU2C_SYNP2 Reviewed; 526 AA.
AC Q8KX56; B1XKP9;
DT 07-MAR-2006, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2002, sequence version 1.
DT 25-MAY-2022, entry version 108.
DE RecName: Full=NAD(P)H-quinone oxidoreductase subunit 2 {ECO:0000255|HAMAP-Rule:MF_00445};
DE EC=7.1.1.- {ECO:0000255|HAMAP-Rule:MF_00445};
DE AltName: Full=NAD(P)H dehydrogenase subunit 2 {ECO:0000255|HAMAP-Rule:MF_00445};
DE AltName: Full=NADH-plastoquinone oxidoreductase subunit 2 {ECO:0000255|HAMAP-Rule:MF_00445};
DE AltName: Full=NDH-1, subunit 2 {ECO:0000255|HAMAP-Rule:MF_00445};
GN Name=ndhB {ECO:0000255|HAMAP-Rule:MF_00445};
GN OrderedLocusNames=SYNPCC7002_A2547;
OS Synechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6) (Agmenellum
OS quadruplicatum).
OC Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC unclassified Synechococcus.
OX NCBI_TaxID=32049;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Nomura C.T., Persson S., Zhao J., Bryant D.A.;
RT "An analysis of forty genes encoding electron transport proteins from
RT Synechococcus sp. PCC 7002: a comparative study of electron transport
RT proteins from cyanobacteria and chloroplasts.";
RL Submitted (MAY-2001) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 27264 / PCC 7002 / PR-6;
RA Li T., Zhao J., Zhao C., Liu Z., Zhao F., Marquardt J., Nomura C.T.,
RA Persson S., Detter J.C., Richardson P.M., Lanz C., Schuster S.C., Wang J.,
RA Li S., Huang X., Cai T., Yu Z., Luo J., Zhao J., Bryant D.A.;
RT "Complete sequence of Synechococcus sp. PCC 7002.";
RL Submitted (FEB-2008) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: NDH-1 shuttles electrons from an unknown electron donor, via
CC FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory
CC and/or the photosynthetic chain. The immediate electron acceptor for
CC the enzyme in this species is believed to be plastoquinone. Couples the
CC redox reaction to proton translocation, and thus conserves the redox
CC energy in a proton gradient. Cyanobacterial NDH-1 also plays a role in
CC inorganic carbon-concentration. {ECO:0000255|HAMAP-Rule:MF_00445}.
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_00445};
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_00445};
CC -!- SUBUNIT: NDH-1 can be composed of about 15 different subunits;
CC different subcomplexes with different compositions have been identified
CC which probably have different functions. {ECO:0000255|HAMAP-
CC Rule:MF_00445}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid 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; AF381035; AAN03537.1; -; Genomic_DNA.
DR EMBL; CP000951; ACB00524.1; -; Genomic_DNA.
DR RefSeq; WP_012308142.1; NC_010475.1.
DR AlphaFoldDB; Q8KX56; -.
DR SMR; Q8KX56; -.
DR STRING; 32049.SYNPCC7002_A2547; -.
DR EnsemblBacteria; ACB00524; ACB00524; SYNPCC7002_A2547.
DR KEGG; syp:SYNPCC7002_A2547; -.
DR eggNOG; COG1007; Bacteria.
DR HOGENOM; CLU_007100_1_5_3; -.
DR OMA; FYIRVIV; -.
DR Proteomes; UP000001688; Chromosome.
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 GO; GO:0019684; P:photosynthesis, light reaction; IEA:UniProtKB-UniRule.
DR HAMAP; MF_00445; NDH1_NuoN_1; 1.
DR InterPro; IPR010096; NADH-Q_OxRdtase_suN/2.
DR InterPro; IPR001750; ND/Mrp_mem.
DR InterPro; IPR045693; Ndh2_N.
DR Pfam; PF19530; Ndh2_N; 1.
DR Pfam; PF00361; Proton_antipo_M; 1.
DR TIGRFAMs; TIGR01770; NDH_I_N; 1.
PE 3: Inferred from homology;
KW Membrane; NAD; NADP; Plastoquinone; Quinone; Reference proteome; Thylakoid;
KW Translocase; Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..526
FT /note="NAD(P)H-quinone oxidoreductase subunit 2"
FT /id="PRO_0000225359"
FT TRANSMEM 16..36
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 43..63
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 80..100
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 107..127
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 133..153
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 168..188
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 211..231
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 245..265
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 279..299
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 307..327
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 335..355
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 379..399
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 401..421
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 469..489
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
SQ SEQUENCE 526 AA; 56148 MW; 828302265710FFBE CRC64;
MDFSSTVASQ LYTGAILPES IVILTLIVVL VGDLIVGRAR SGWIPYAAIA GLLGSVFALY
LGWDNPHPVA FLGAFNSDNL SILFRGIIVL STAFTIMMSV RYVERSGTAL SEFICILLTA
TLGGMFLSGA NELVMIFVSL EMLSISSYLL TGYMKRDPRS NEAALKYLLI GAASSAIFLY
GVSLLYGLSG GKTILSEIAL GFTDPQGGQS LALAIALVFA IAGIAFKISA VPFHQWTPDV
YEGSPTPVVA FLSVGSKAAG FALAIRLLVT VFNPVSEEWH FIFTALAILS MVLGNVVALA
QTSMKRMLAY SSIAQAGFVM IGLVAGTDAG YSSVIFYLLV YLFMNLGAFT CVILFSLRTG
TDQIAEYAGL YQKDPLLTLG LSVCLLSLGG IPPLAGFFGK IYLFWAGWQA GLYGLVLLGL
ITSVISIYYY IRVIKMMVVK EPQEMSDSVR NYPAVTWTAV GMKPLQVGLV LSVIITSLAG
ILSNPLFVIA DQSVTSTPML QVANHPTEQV VAQVDSELVG VAIADH
