NU2C1_TOBAC
ID NU2C1_TOBAC Reviewed; 510 AA.
AC P0CC98; P06256; Q32720;
DT 09-FEB-2010, integrated into UniProtKB/Swiss-Prot.
DT 09-FEB-2010, sequence version 1.
DT 25-MAY-2022, entry version 31.
DE RecName: Full=NAD(P)H-quinone oxidoreductase subunit 2 A, 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 A {ECO:0000255|HAMAP-Rule:MF_00445};
DE AltName: Full=NADH-plastoquinone oxidoreductase subunit 2 A {ECO:0000255|HAMAP-Rule:MF_00445};
GN Name=ndhB1 {ECO:0000255|HAMAP-Rule:MF_00445}; Synonyms=ndh2-A;
OS Nicotiana tabacum (Common tobacco).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC asterids; lamiids; Solanales; Solanaceae; Nicotianoideae; Nicotianeae;
OC Nicotiana.
OX NCBI_TaxID=4097;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=cv. Bright Yellow 4;
RX PubMed=16453699; DOI=10.1002/j.1460-2075.1986.tb04464.x;
RA Shinozaki K., Ohme M., Tanaka M., Wakasugi T., Hayashida N.,
RA Matsubayashi T., Zaita N., Chunwongse J., Obokata J.,
RA Yamaguchi-Shinozaki K., Ohto C., Torazawa K., Meng B.-Y., Sugita M.,
RA Deno H., Kamogashira T., Yamada K., Kusuda J., Takaiwa F., Kato A.,
RA Tohdoh N., Shimada H., Sugiura M.;
RT "The complete nucleotide sequence of the tobacco chloroplast genome: its
RT gene organization and expression.";
RL EMBO J. 5:2043-2049(1986).
RN [2]
RP SEQUENCE REVISION.
RA Sugiura M.;
RL Submitted (FEB-1998) to the EMBL/GenBank/DDBJ databases.
RN [3]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND RNA EDITING.
RX PubMed=8541494; DOI=10.1007/bf00041158;
RA Freyer R., Lopez C., Maier R.M., Martin M., Sabater B., Koessel H.;
RT "Editing of the chloroplast ndhB encoded transcript shows divergence
RT between closely related members of the grass family (Poaceae).";
RL Plant Mol. Biol. 29:679-684(1995).
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 -!- RNA EDITING: Modified_positions=50 {ECO:0000269|PubMed:8541494}, 156
CC {ECO:0000269|PubMed:8541494}, 196 {ECO:0000269|PubMed:8541494}, 204
CC {ECO:0000269|PubMed:8541494}, 246 {ECO:0000269|PubMed:8541494}, 249
CC {ECO:0000269|PubMed:8541494}, 277 {ECO:0000269|PubMed:8541494}, 279
CC {ECO:0000269|PubMed:8541494}, 494 {ECO:0000269|PubMed:8541494};
CC -!- SIMILARITY: Belongs to the complex I subunit 2 family.
CC {ECO:0000255|HAMAP-Rule:MF_00445}.
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DR EMBL; Z00044; CAA77428.1; ALT_SEQ; Genomic_DNA.
DR PIR; A00420; DENTN2.
DR RefSeq; NP_054547.1; NC_001879.2.
DR RefSeq; NP_054570.1; NC_001879.2.
DR AlphaFoldDB; P0CC98; -.
DR SMR; P0CC98; -.
DR GeneID; 800509; -.
DR GeneID; 800511; -.
DR KEGG; nta:800509; -.
DR KEGG; nta:800511; -.
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 2: Evidence at transcript level;
KW Chloroplast; Membrane; NAD; NADP; Plastid; Plastoquinone; Quinone;
KW RNA editing; Thylakoid; Translocase; Transmembrane; Transmembrane helix;
KW Transport.
FT CHAIN 1..510
FT /note="NAD(P)H-quinone oxidoreductase subunit 2 A,
FT chloroplastic"
FT /id="PRO_0000117680"
FT TRANSMEM 31..51
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 184..204
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 229..249
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 261..281
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; 56883 MW; 7B6F250FE30302B0 CRC64;
MIWHVQNENF ILDSTRIFMK AFHLLLFDGS LIFPECILIF GLILLLMIDL TSDQKDIPWL
YFISSTSLVM SITALLFRWR EEPMISFSGN FQTNNFNEIF QFLILLCSTL CIPLSVEYIE
CTEMAITEFL LFVLTATLGG MFLCGANDLI TIFVALECFS LCSYLLSGYT KKDVRSNEAT
MKYLLMGGAS SSILVYGFSW LYGLSGGEIE LQEIVNGLIN TQMYNSPGIS IALIFITVGI
GFKLSLAPFH QWTPDVYEGS PTPVVAFLSV TSKVAALALA TRIFDIPFYF SSNEWHLLLE
ILAILSMILG NLIAITQTSM KRMLAYSSIG QIGYVIIGII VGDSNDGYAS MITYMLFYIS
MNLGTFACIV LFGLRTGTDN IRDYAGLYTK DPFLALSLAL CLLSLGGLPP LAGFFGKLYL
FWCGWQAGLY FLVLIGLLTS VVSIYYYLKI IKLLMTGRNQ EITPHVRNYR RSPLRSNNSI
ELSMIVCVIA STILGISMNP IIAIAQDSLF
