NU2M_PHOVI
ID NU2M_PHOVI Reviewed; 347 AA.
AC Q00540; Q08H18;
DT 01-DEC-1992, integrated into UniProtKB/Swiss-Prot.
DT 01-DEC-1992, sequence version 1.
DT 25-MAY-2022, entry version 84.
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 Phoca vitulina (Harbor seal).
OG Mitochondrion.
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Carnivora; Caniformia; Phocidae; Phoca.
OX NCBI_TaxID=9720;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=1593642; DOI=10.1007/bf00160463;
RA Arnason U., Johnsson E.;
RT "The complete mitochondrial DNA sequence of the harbor seal, Phoca
RT vitulina.";
RL J. Mol. Evol. 34:493-505(1992).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=16815048; DOI=10.1016/j.ympev.2006.05.022;
RA Arnason U., Gullberg A., Janke A., Kullberg M., Lehman N., Petrov E.A.,
RA Vainola R.;
RT "Pinniped phylogeny and a new hypothesis for their origin and dispersal.";
RL Mol. Phylogenet. Evol. 41:345-354(2006).
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; X63726; CAA45258.1; -; Genomic_DNA.
DR EMBL; AM181032; CAJ57080.1; -; Genomic_DNA.
DR PIR; S26152; S26152.
DR RefSeq; NP_006929.1; NC_001325.1.
DR AlphaFoldDB; Q00540; -.
DR SMR; Q00540; -.
DR GeneID; 807659; -.
DR CTD; 4536; -.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0005743; C:mitochondrial inner membrane; ISS:UniProtKB.
DR GO; GO:0070469; C:respirasome; IEA:UniProtKB-KW.
DR GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:UniProtKB-EC.
DR GO; GO:0006120; P:mitochondrial electron transport, NADH to ubiquinone; IEA:InterPro.
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_0000117624"
FT TRANSMEM 3..23
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 25..45
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 60..80
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 96..116
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 122..142
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 153..173
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 237..257
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 274..294
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TRANSMEM 323..343
FT /note="Helical"
FT /evidence="ECO:0000255"
SQ SEQUENCE 347 AA; 38789 MW; B43DC68CA020A148 CRC64;
MKPPILIIIM STVMSGTMIV LTSSHWLLTW IGFEMNMLAI IPILMKNHTP RATEASTKYF
LTQATASMLL MMGIIINLMF SGEWTISKIP NPIASGLVTI ALTMKLGMAP FHFWVPEVTQ
GISLSSGMIL LTWQKIAPLS VLYQISPSIN PKLLITMAIA SVLIGGWGGL NQTQLRKILA
YSSIAHMGWM TVILTYNPTL MVLNLTIYIT MTLSTFMLFM HNSSTTTLSL SNTWNKLPLM
TSLILMLMMS LGGLPPLSGF APKWMIIQEL TKNDMIILPT FMAITALLNL YFYMRLSYST
ALTMFPSVNN MKMKWQFESA KKIILLPPLI IISTMLLPMT PMMSILE