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NU2C2_DAUCA
ID   NU2C2_DAUCA             Reviewed;         510 AA.
AC   P0CC55; Q0G9Q2;
DT   09-FEB-2010, integrated into UniProtKB/Swiss-Prot.
DT   09-FEB-2010, sequence version 1.
DT   25-MAY-2022, entry version 28.
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};
OS   Daucus carota (Wild carrot).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; campanulids; Apiales; Apiaceae; Apioideae; Scandiceae; Daucinae;
OC   Daucus; Daucus sect. Daucus.
OX   NCBI_TaxID=4039;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Danvers Half-long;
RX   PubMed=16945140; DOI=10.1186/1471-2164-7-222;
RA   Ruhlman T., Lee S.-B., Jansen R.K., Hostetler J.B., Tallon L.J., Town C.D.,
RA   Daniell H.;
RT   "Complete plastid genome sequence of Daucus carota: implications for
RT   biotechnology and phylogeny of angiosperms.";
RL   BMC Genomics 7:222-222(2006).
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; DQ898156; ABI32485.1; -; Genomic_DNA.
DR   RefSeq; YP_740162.1; NC_008325.1.
DR   RefSeq; YP_740177.1; NC_008325.1.
DR   AlphaFoldDB; P0CC55; -.
DR   SMR; P0CC55; -.
DR   EnsemblPlants; KZM81283; KZM81283; DCAR_032546.
DR   GeneID; 4266791; -.
DR   GeneID; 4266830; -.
DR   Gramene; KZM81283; KZM81283; DCAR_032546.
DR   OMA; RTSYERC; -.
DR   OrthoDB; 1153818at2759; -.
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_0000391265"
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        354..374
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        484..504
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
SQ   SEQUENCE   510 AA;  56588 MW;  E637E7441EB0A1B7 CRC64;
     MIWHVQNENF ILDSTRIFMK AFHLLLFDGS LIVPECILIF GLILLLMIDS TSDQKDIPWL
     YFISSTSLVM SITALLFRWR EEPVISFSGN FQTNNFNEIF QFLILLCSTL CIPLSVEYIE
     CTEMAITEFL LFVLTATLGG MFLCGANDLI TIFVAPECFS LCSYLLSGYT KKDVRSNEAT
     MKYLLMGGAS SSILVHGFSW LYGSSGGEIE LQEIVNGLIN TQMYNSPGIS IALIFITVGI
     GFKLSPAPSH QWTPDVYEGS PTPVVAFLSV TSKVAASASA TRIFDIPFYF SSNEWHLLLE
     TLAILSMILG NLIAITQTSM KRMLAYSSIG QIGYVIIGII VGDSNDGYAS MITYMLFYIS
     MNLGTFACIV LFGLRTGTDN IRDYAGLYTK DPFLALSLAL CLLSLGGLPP LAGFFGKLYL
     FWCGWQAGLY FLVLIGLLTS VVSIYYYLKI IKLLMTGRTQ EITPHVRNYR RSPFRSNNSI
     ELSMIVCVIA STIPGISMNP IIAIAQDTLF
 
 
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