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NU2C2_CUCSA
ID   NU2C2_CUCSA             Reviewed;         510 AA.
AC   P0CC51; A5J1X9; Q4VZK8;
DT   09-FEB-2010, integrated into UniProtKB/Swiss-Prot.
DT   09-FEB-2010, sequence version 1.
DT   25-MAY-2022, entry version 30.
DE   RecName: Full=NAD(P)H-quinone oxidoreductase subunit 2 B, chloroplastic {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 B {ECO:0000255|HAMAP-Rule:MF_00445};
DE   AltName: Full=NADH-plastoquinone oxidoreductase subunit 2 B {ECO:0000255|HAMAP-Rule:MF_00445};
GN   Name=ndhB2 {ECO:0000255|HAMAP-Rule:MF_00445}; Synonyms=ndhB-B;
GN   OrderedLocusNames=CsCp125;
OS   Cucumis sativus (Cucumber).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Cucurbitales; Cucurbitaceae; Benincaseae; Cucumis.
OX   NCBI_TaxID=3659;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Baekmibaekdadagi;
RX   PubMed=16362300; DOI=10.1007/s00299-005-0097-y;
RA   Kim J.-S., Jung J.D., Lee J.-A., Park H.-W., Oh K.-H., Jeong W.J.,
RA   Choi D.-W., Liu J.R., Cho K.Y.;
RT   "Complete sequence and organization of the cucumber (Cucumis sativus L. cv.
RT   Baekmibaekdadagi) chloroplast genome.";
RL   Plant Cell Rep. 25:334-340(2006).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Borszczagowski;
RX   PubMed=17607527; DOI=10.2478/s11658-007-0029-7;
RA   Plader W.W., Yukawa Y., Sugiura M., Malepszy S.;
RT   "The complete structure of the cucumber (Cucumis sativus L.) chloroplast
RT   genome: its composition and comparative analysis.";
RL   Cell. Mol. Biol. Lett. 12:584-594(2007).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Chipper, and cv. Gy14;
RX   PubMed=17546086; DOI=10.1139/g07-003;
RA   Chung S.-M., Gordon V.S., Staub J.E.;
RT   "Sequencing cucumber (Cucumis sativus L.) chloroplast genomes identifies
RT   differences between chilling-tolerant and -susceptible cucumber lines.";
RL   Genome 50:215-225(2007).
CC   -!- FUNCTION: NDH shuttles electrons from NAD(P)H:plastoquinone, via FMN
CC       and iron-sulfur (Fe-S) centers, to quinones in the photosynthetic chain
CC       and possibly in a chloroplast respiratory chain. The immediate electron
CC       acceptor for the enzyme in this species is believed to be
CC       plastoquinone. Couples the redox reaction to proton translocation, and
CC       thus conserves the redox energy in a proton gradient.
CC       {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 is composed of at least 16 different subunits, 5 of which
CC       are encoded in the nucleus. {ECO:0000255|HAMAP-Rule:MF_00445}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_00445}; Multi-pass membrane protein
CC       {ECO:0000255|HAMAP-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; DQ119058; AAZ94711.1; -; Genomic_DNA.
DR   EMBL; AJ970307; CAJ00819.1; -; Genomic_DNA.
DR   EMBL; DQ865975; ABI97479.1; -; Genomic_DNA.
DR   EMBL; DQ865976; ABI98805.1; -; Genomic_DNA.
DR   RefSeq; YP_247644.1; NC_007144.1.
DR   RefSeq; YP_247660.1; NC_007144.1.
DR   AlphaFoldDB; P0CC51; -.
DR   SMR; P0CC51; -.
DR   GeneID; 3429253; -.
DR   GeneID; 3429254; -.
DR   KEGG; csv:3429253; -.
DR   KEGG; csv:3429254; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
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   Chloroplast; Membrane; NAD; NADP; Plastid; Plastoquinone; Quinone;
KW   Thylakoid; Translocase; Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..510
FT                   /note="NAD(P)H-quinone oxidoreductase subunit 2 B,
FT                   chloroplastic"
FT                   /id="PRO_0000391263"
FT   TRANSMEM        24..44
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        99..119
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        124..144
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        149..169
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        183..203
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        227..247
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        295..315
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        323..343
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        347..367
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        395..415
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        418..438
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT   TRANSMEM        482..502
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
SQ   SEQUENCE   510 AA;  56587 MW;  363CC3ABEA1FA11A CRC64;
     MIWHVQNENF ILDSTRIFMK AFHLLLFDGS FIFPECILIF GLILLLMIDS TSDQKDIPWL
     YFISSTSLVM SITALLFRWR EEPMISFSGN FQTNNFNEIF QFLILLCSTL CIPLSVEYIE
     CTEMAITEFL LFVLTATLGG MFLCGANDLI TIFVAPECFS LCSYLLSGYT KKDVRSNEAT
     TKYLLMGGAS SSILVHGFSW LYGSSGGEIE LQEIVNGLLN TQMYNSPGIS IALIFITVGI
     GFKLSPAPSH QWTPDVYEGS PTPVVAFLSV TSKVAASASA TRIFDIPFYF SSNEWHLLLE
     ILAILSMILG NLIAITQTSM KRMLAYSSIG QIGYVIIGII VGDSNGGYAS MITYMLFYIA
     MNLGTFARIV SFGLRTGTDN IRDYAGLYTK DPLLALSLAL CLLSLGGLPP LAGFFGKLHL
     FWCGWQAGLY FLVSIGLLTS VVSIYYYLKI IKLLMTGRNQ EITPHVRNYR RSPLRSNNSI
     ELSMIVCVIA STIPGISMNP IIEIAQDTLF
 
 
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