NU2C_SYNS3
ID NU2C_SYNS3 Reviewed; 523 AA.
AC Q0I8A7;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 03-OCT-2006, sequence version 1.
DT 25-MAY-2022, entry version 92.
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}; OrderedLocusNames=sync_2113;
OS Synechococcus sp. (strain CC9311).
OC Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Synechococcus;
OC unclassified Synechococcus.
OX NCBI_TaxID=64471;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CC9311;
RX PubMed=16938853; DOI=10.1073/pnas.0602963103;
RA Palenik B., Ren Q., Dupont C.L., Myers G.S., Heidelberg J.F., Badger J.H.,
RA Madupu R., Nelson W.C., Brinkac L.M., Dodson R.J., Durkin A.S.,
RA Daugherty S.C., Sullivan S.A., Khouri H., Mohamoud Y., Halpin R.,
RA Paulsen I.T.;
RT "Genome sequence of Synechococcus CC9311: insights into adaptation to a
RT coastal environment.";
RL Proc. Natl. Acad. Sci. U.S.A. 103:13555-13559(2006).
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; CP000435; ABI47557.1; -; Genomic_DNA.
DR RefSeq; WP_011620027.1; NC_008319.1.
DR AlphaFoldDB; Q0I8A7; -.
DR SMR; Q0I8A7; -.
DR STRING; 64471.sync_2113; -.
DR EnsemblBacteria; ABI47557; ABI47557; sync_2113.
DR KEGG; syg:sync_2113; -.
DR eggNOG; COG1007; Bacteria.
DR HOGENOM; CLU_007100_1_2_3; -.
DR OMA; FYIRVIV; -.
DR OrthoDB; 1664448at2; -.
DR Proteomes; UP000001961; 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 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..523
FT /note="NAD(P)H-quinone oxidoreductase subunit 2"
FT /id="PRO_1000026155"
FT TRANSMEM 30..50
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 57..77
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 94..114
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 128..148
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 182..202
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 223..243
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 255..275
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 291..311
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 317..337
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 345..365
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 389..409
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 424..444
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 477..497
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
SQ SEQUENCE 523 AA; 54745 MW; 05578C3D08B4319F CRC64;
MPELGSLLLS TQAVAAPGEL LNLALHAGTV GPEAAVLVAM IATLLVDLAG EKVSVRWVPP
ICYAGLGSAL VLLALQWNAP LEPSFLGAFL SDHLAIAFRA VVALSTLLSL LISWRYAEQS
GTPVGEYAAI LLAATLGGML LCGATDLVSV FVSLETLSVA SYLLSGYMKR DARSSEAALK
YLLVGSAAAA VFLYGASLLY GLSGSTSLEV IGNALVTSPT PLAALALVFV LATVAFKIAA
VPFHQWTPDV YEGSPTPVVA FLSVGSKAAG FALALRLLVG CFGSFDTQWK LLFTVLAILS
MTLGNVVALA QTSMKRMLAY SSIGQAGFVM IGLVCGTEDG FAAMVLYMAT YLFMNLGAFA
CIILFSIRTG SDRISDYAGL YQKDPLITLG LSLCLLSLGG IPPMLGFFGK IYLFFAGWAD
HQYVLVVVGL VTSVISIYYY IGVIKMMVVK EPQEASEVVK AYPPINWSTM GLPPLRVALV
LCVLVTAVGG ILSNPLFEWA SSTVAGTPLL QQAIATSSGA SLG
