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NU2M_VARML
ID   NU2M_VARML              Reviewed;         345 AA.
AC   Q94VE5;
DT   21-NOV-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-DEC-2001, sequence version 1.
DT   25-MAY-2022, entry version 61.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 2;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 2;
GN   Name=MT-ND2; Synonyms=MTND2, NADH2, ND2;
OS   Varanus melinus (Quince monitor lizard).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera;
OC   Anguimorpha; Paleoanguimorpha; Varanoidea; Varanidae; Varanus.
OX   NCBI_TaxID=169846;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=Isolate UMFS 10164;
RA   Ast J.C.;
RT   "Mitochondrial DNA evidence and evolution in Varanoidea (Squamata).";
RL   Cladistics 17:211-226(2001).
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; AF407511; AAL10086.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q94VE5; -.
DR   SMR; Q94VE5; -.
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.
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..345
FT                   /note="NADH-ubiquinone oxidoreductase chain 2"
FT                   /id="PRO_0000117645"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        60..80
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        110..130
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        149..169
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        179..196
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        200..222
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        240..260
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   345 AA;  37899 MW;  9B5FC7F5A5B7126A CRC64;
     MNPIINFILL SSMIAGTVLT MTSHHWVSAW LGLELNTLAI IPIISKTHHP RATEASTKYF
     LIQAASSALM LFAGIINAHL YGTWDITQIS NNPTKILLTA ALATKLGLAP IHFWLPEILQ
     GVPMLTALII TTWQKIAPMA LLITTWNTIP TPMTLTMGFL SVIIGGLGGL NQTQLRKMMA
     FSSIAHLGWM IVIITITPSL TLFNLVLYIT FTSSTMLIMH LTMSKTLQNA MLMSSHSSTT
     ANLFLLSLLS LGGLPPLSGF SPKWLILQEL ITHNLVPLAT TMAITTLFSL MFYLRTTYIS
     AMTLPPSTTP IKNIWRLKPN SSTTMLSMFS LATLFLLPIT PTMTQ
 
 
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