NU2C2_SACHY
ID NU2C2_SACHY Reviewed; 510 AA.
AC P0CD41; P0C159;
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=PS066;
OS Saccharum hybrid (Sugarcane).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; PACMAD clade;
OC Panicoideae; Andropogonodae; Andropogoneae; Saccharinae; Saccharum;
OC unclassified Saccharum.
OX NCBI_TaxID=15819;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA], AND RNA EDITING.
RC STRAIN=cv. SP-80-3280;
RX PubMed=15526204; DOI=10.1007/s00294-004-0542-4;
RA Calsa T. Jr., Carraro D.M., Benatti M.R., Barbosa A.C., Kitajima J.P.,
RA Carrer H.;
RT "Structural features and transcript-editing analysis of sugarcane
RT (Saccharum officinarum L.) chloroplast genome.";
RL Curr. Genet. 46:366-373(2004).
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=156 {ECO:0000269|PubMed:15526204}, 196
CC {ECO:0000269|PubMed:15526204}, 204 {ECO:0000269|PubMed:15526204}, 246
CC {ECO:0000269|PubMed:15526204}, 277 {ECO:0000269|PubMed:15526204}, 494
CC {ECO:0000269|PubMed:15526204};
CC -!- SIMILARITY: Belongs to the complex I subunit 2 family.
CC {ECO:0000255|HAMAP-Rule:MF_00445}.
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DR EMBL; AE009947; -; NOT_ANNOTATED_CDS; Genomic_DNA.
DR AlphaFoldDB; P0CD41; -.
DR SMR; P0CD41; -.
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 B,
FT chloroplastic"
FT /id="PRO_0000391308"
FT TRANSMEM 31..51
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00445"
FT TRANSMEM 59..79
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; 56931 MW; 3240A282F38B217E CRC64;
MIWHVQNENF ILDSTRIFMK AFHLLLFNGS FIFPECILIF GLILLLMIDL TSDQKDRPWF
YFISSTSLVI SITALLFRWR EEPIISFSGN FQTNNFNEIF QFLILLCSTL CIPLSVEYIE
CTEMAITEFL LFVLTATLGG MFLCGANDLI TIFVALECFS LCSYLLSGYT KRDLRSNEAT
MKYLLMGGAS SSILVLGFSW LYGLSGGEIE LQEIVNGLIN TQMYNSPGIS IALIFITVGL
GFKLSLAPFH QWTPDVYEGS PTPVVAFLSV TSKVAALALA TRILDIPFYF SSNEWHLLLE
ILAILSMILG NLLAITQTSM KRMLAYSSIG QIGYVIIGII VGDSNDGYAS MITYMLFYIS
MNLGTFACIV LFGLRTGTDN IRDYAGLYTK DPFLALSLAL CLLSLGGLPP LAGFFGKLYL
FWCGWQAGLY FLVSIGLLTS VLSIYYYLKI IKLLMTGRNQ EITPYVRNYR RSPLRSNNSI
ELSMTVCVIA STILGISMNP ILAIAQDTLF
