ID   NU2M_DASNO              Reviewed;         347 AA.
AC   O21326;
DT   15-JUL-1998, integrated into UniProtKB/Swiss-Prot.
DT   01-JAN-1998, sequence version 1.
DT   03-AUG-2022, entry version 100.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 2 {ECO:0000250|UniProtKB:P03891};
DE            EC=7.1.1.2 {ECO:0000250|UniProtKB:P03891};
DE   AltName: Full=NADH dehydrogenase subunit 2;
GN   Name=MT-ND2 {ECO:0000250|UniProtKB:P03891}; Synonyms=MTND2, NADH2, ND2;
OS   Dasypus novemcinctus (Nine-banded armadillo).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Xenarthra; Cingulata; Dasypodidae; Dasypus.
OX   NCBI_TaxID=9361;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=9214749; DOI=10.1093/oxfordjournals.molbev.a025816;
RA   Arnason U., Gullberg A., Janke A.;
RT   "Phylogenetic analyses of mitochondrial DNA suggest a sister group
RT   relationship between Xenarthra (Edentata) and Ferungulates.";
RL   Mol. Biol. Evol. 14:762-768(1997).
CC   -!- FUNCTION: Core subunit of the mitochondrial membrane respiratory chain
CC       NADH dehydrogenase (Complex I) which catalyzes electron transfer from
CC       NADH through the respiratory chain, using ubiquinone as an electron
CC       acceptor. Essential for the catalytic activity and assembly of complex
CC       I. {ECO:0000250|UniProtKB:P03891}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=a ubiquinone + 5 H(+)(in) + NADH = a ubiquinol + 4 H(+)(out) +
CC         NAD(+); Xref=Rhea:RHEA:29091, Rhea:RHEA-COMP:9565, Rhea:RHEA-
CC         COMP:9566, ChEBI:CHEBI:15378, ChEBI:CHEBI:16389, ChEBI:CHEBI:17976,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945; EC=7.1.1.2;
CC         Evidence={ECO:0000250|UniProtKB:P03891};
CC   -!- SUBUNIT: Core subunit of respiratory chain NADH dehydrogenase (Complex
CC       I) which is composed of 45 different subunits. Interacts with TMEM242
CC       (By similarity). {ECO:0000250|UniProtKB:P03891,
CC       ECO:0000250|UniProtKB:P03892}.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC       {ECO:0000250|UniProtKB:P03892}; Multi-pass membrane protein
CC       {ECO:0000255}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 2 family. {ECO:0000305}.
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DR   EMBL; Y11832; CAA72530.1; -; Genomic_DNA.
DR   PIR; T11442; T11442.
DR   RefSeq; NP_007460.1; NC_001821.1.
DR   AlphaFoldDB; O21326; -.
DR   SMR; O21326; -.
DR   Ensembl; ENSDNOT00000032557; ENSDNOP00000024105; ENSDNOG00000034540.
DR   GeneID; 808135; -.
DR   KEGG; dnm:808135; -.
DR   CTD; 4536; -.
DR   HOGENOM; CLU_007100_1_3_1; -.
DR   OMA; HFWVPEV; -.
DR   OrthoDB; 1153818at2759; -.
DR   GO; GO:0005743; C:mitochondrial inner membrane; ISS:UniProtKB.
DR   GO; GO:0005747; C:mitochondrial respiratory chain complex I; IEA:Ensembl.
DR   GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; ISS:UniProtKB.
DR   GO; GO:0006120; P:mitochondrial electron transport, NADH to ubiquinone; ISS:UniProtKB.
DR   GO; GO:0032981; P:mitochondrial respiratory chain complex I assembly; ISS:UniProtKB.
DR   GO; GO:0072593; P:reactive oxygen species metabolic process; IEA:Ensembl.
DR   InterPro; IPR010933; NADH_DH_su2_C.
DR   InterPro; IPR003917; NADH_UbQ_OxRdtase_chain2.
DR   InterPro; IPR001750; ND/Mrp_mem.
DR   Pfam; PF06444; NADH_dehy_S2_C; 1.
DR   Pfam; PF00361; Proton_antipo_M; 1.
DR   PRINTS; PR01436; NADHDHGNASE2.
PE   3: Inferred from homology;
KW   Electron transport; Membrane; Mitochondrion; Mitochondrion inner membrane;
KW   NAD; Respiratory chain; Translocase; Transmembrane; Transmembrane helix;
KW   Transport; Ubiquinone.
FT   CHAIN           1..347
FT                   /note="NADH-ubiquinone oxidoreductase chain 2"
FT                   /id="PRO_0000117577"
FT   TRANSMEM        3..23
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        26..46
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        67..87
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        96..116
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        149..169
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        178..198
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        200..220
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        239..259
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        274..294
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        325..345
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   347 AA;  39329 MW;  9E4B26946FEED4B5 CRC64;
     MNPLIFIIIM FTLILGTVIT MISSHWLLIW MGLEMNMFSM IPIIMMKSHP RSTEAATKYF
     MTQATASMLL MMGVIINLYY SGQWTIMNSL NPVTSYMMTI ALAMKLGLAP FHFWVPEVTQ
     GTQLTSGMIL LTWQKLAPMT ILYQIHSSLN LNLMLTLAIL SILIGGWGGL NQTQLRKIMA
     YSSIAHMGWM TAIIMYNTSL MMLNLVIYLM MTITMFALFI NSTTTTTLSL SLTWNSTPIL
     TTMLLTTLLS LGGLPPLSGF APKWMIIQEM TKNNMLLLPT TMAIMALLNL YFYMRLIYST
     SLTMFPTTNN NKMKWKYKTQ NFIPLSPTLI TLSTMLIPLT PMMLILN