NU2C2_ILLOL
ID NU2C2_ILLOL Reviewed; 492 AA.
AC P0CC75; A6MMY9;
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 Illicium oligandrum (Star anise).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; Austrobaileyales; Schisandraceae; Illicium.
OX NCBI_TaxID=145286;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=17644003; DOI=10.1016/j.ympev.2007.06.004;
RA Hansen D.R., Dastidar S.G., Cai Z., Penaflor C., Kuehl J.V., Boore J.L.,
RA Jansen R.K.;
RT "Phylogenetic and evolutionary implications of complete chloroplast genome
RT sequences of four early-diverging angiosperms: Buxus (Buxaceae),
RT Chloranthus (Chloranthaceae), Dioscorea (Dioscoreaceae), and Illicium
RT (Schisandraceae).";
RL Mol. Phylogenet. Evol. 45:547-563(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}.
CC -!- CAUTION: This protein is smaller than usual in this organism, and may
CC not be functional. {ECO:0000305}.
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DR EMBL; EF380354; ABQ52581.1; -; Genomic_DNA.
DR RefSeq; YP_001294315.1; NC_009600.1.
DR RefSeq; YP_001294331.1; NC_009600.1.
DR AlphaFoldDB; P0CC75; -.
DR SMR; P0CC75; -.
DR GeneID; 5236693; -.
DR GeneID; 5236737; -.
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..492
FT /note="NAD(P)H-quinone oxidoreductase subunit 2 B,
FT chloroplastic"
FT /id="PRO_0000391275"
FT TRANSMEM 6..26
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 39..59
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 81..101
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 106..126
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 131..151
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 165..185
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 209..229
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 277..297
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 305..325
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 329..349
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 377..397
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 400..420
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 466..486
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
SQ SEQUENCE 492 AA; 54328 MW; 3D142E404B50A2C3 CRC64;
MKAFHLLLFH GSFIFPECIL IFGLILLLMI DSTSDQKDTP WLYFISSTSL VMSITALLFR
WREEPMISFS GNFQTNNFNE VFQFLILLCS TLCIPLSVEY IECTEMAITE FLLFVLTATL
GGMFLCGAND LITIFVAPEC FSLCSYLLSG YTKRDVRSNE ATTKYLLMGG ASSSILVHGF
SWLYGSSGGE IELQEILNGL INTQMYNSPG ISIALISITV GIGFKLSPAP SHQWTPDVYE
GSPTPVVAFL SVTSKVAASA SATRIFDIPF YFSSNEWHLL LEILAILSMI LGNLIAITQT
SMKRMLAYSS IGQIGYVIIG IIVGDSNDGY ASMITYMLFY ISMNLGTFAR IVSFGPRTGT
DNIRDYAGLY TKDPFLALSS ALCLLSLGGI PPLAGFFGKL HLFWCGWQAG LYFLVSIGLL
TSVVSIYYYL KIIKLLMTGR NKEITPHVRN YRRSPLRSNN SIELSMIVCV IASTIPGISM
NPIIAIAQDT LF
