ID   NU2M_ARTSA              Reviewed;         136 AA.
AC   P19042;
DT   01-NOV-1990, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1990, sequence version 1.
DT   25-MAY-2022, entry version 72.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 2;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 2;
DE   Flags: Fragments;
GN   Name=ND2;
OS   Artemia salina (Brine shrimp).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Crustacea; Branchiopoda;
OC   Anostraca; Artemiidae; Artemia.
OX   NCBI_TaxID=85549;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=3135541; DOI=10.1093/nar/16.14.6515;
RA   Batuecas B., Garesse R., Calleja M., Valverde J.R., Marco R.;
RT   "Genome organization of Artemia mitochondrial DNA.";
RL   Nucleic Acids Res. 16:6515-6529(1988).
CC   -!- FUNCTION: Core subunit of the mitochondrial membrane respiratory chain
CC       NADH dehydrogenase (Complex I) that is believed to belong to the
CC       minimal assembly required for catalysis. Complex I functions in the
CC       transfer of electrons from NADH to the respiratory chain. The immediate
CC       electron acceptor for the enzyme is believed to be ubiquinone (By
CC       similarity). {ECO:0000250}.
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   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane; Multi-pass membrane
CC       protein.
CC   -!- SIMILARITY: Belongs to the complex I subunit 2 family. {ECO:0000305}.
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DR   EMBL; X07670; CAA30517.1; -; Genomic_DNA.
DR   EMBL; X07671; CAA30518.1; -; Genomic_DNA.
DR   AlphaFoldDB; P19042; -.
DR   SMR; P19042; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005743; C:mitochondrial inner membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0070469; C:respirasome; IEA:UniProtKB-KW.
DR   GO; GO:0008137; F:NADH dehydrogenase (ubiquinone) activity; IEA:UniProtKB-EC.
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..>136
FT                   /note="NADH-ubiquinone oxidoreductase chain 2"
FT                   /id="PRO_0000117552"
FT   TRANSMEM        12..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        34..54
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        74..94
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        99..119
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   NON_CONS        83..84
FT                   /evidence="ECO:0000305"
FT   NON_TER         1
FT   NON_TER         136
SQ   SEQUENCE   136 AA;  15331 MW;  FFD3D8FB4DE9BA17 CRC64;
     MIEESKENSL KYFLIQSVAS VIFLASILNQ SFSFLIPFAL LIKIGAAPFH MWLVSISKSM
     SWKVLSLLMT FQKIGPLLGL AMLSSVSHLS WLMVNMSSFL LMLVYYVTYL AILYFAVILL
     QQTPMYSLAQ MNSNAS