ID   NU4LM_XENLA             Reviewed;          98 AA.
AC   P03904;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   21-JUL-1986, sequence version 1.
DT   03-AUG-2022, entry version 94.
DE   RecName: Full=NADH-ubiquinone oxidoreductase chain 4L;
DE            EC=7.1.1.2;
DE   AltName: Full=NADH dehydrogenase subunit 4L;
GN   Name=mt-nd4l; Synonyms=mtnd4l, nadh4l, nd4l;
OS   Xenopus laevis (African clawed frog).
OG   Mitochondrion.
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC   Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Xenopus.
OX   NCBI_TaxID=8355;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=4019494; DOI=10.1016/s0021-9258(17)39303-1;
RA   Roe B.A., Ma D.-P., Wilson R.K., Wong J.F.-H.;
RT   "The complete nucleotide sequence of the Xenopus laevis mitochondrial
RT   genome.";
RL   J. Biol. Chem. 260:9759-9774(1985).
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. {ECO:0000250|UniProtKB:P03902}.
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   -!- SUBUNIT: Core subunit of respiratory chain NADH dehydrogenase (Complex
CC       I) which is composed of 45 different subunits.
CC       {ECO:0000250|UniProtKB:P03902}.
CC   -!- SUBCELLULAR LOCATION: Mitochondrion inner membrane
CC       {ECO:0000250|UniProtKB:P03902}; Multi-pass membrane protein
CC       {ECO:0000255}.
CC   -!- SIMILARITY: Belongs to the complex I subunit 4L family. {ECO:0000305}.
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DR   EMBL; M10217; AAA66466.1; -; Genomic_DNA.
DR   PIR; A00431; QXXL4L.
DR   RefSeq; NP_008142.1; NC_001573.1.
DR   AlphaFoldDB; P03904; -.
DR   SMR; P03904; -.
DR   GeneID; 2642076; -.
DR   KEGG; xla:2642076; -.
DR   CTD; 4539; -.
DR   Xenbase; XB-GENE-6251969; nd4l.L.
DR   OrthoDB; 1538435at2759; -.
DR   Proteomes; UP000186698; Mitochondrion MT.
DR   Bgee; 2642076; Expressed in egg cell and 19 other tissues.
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:0042773; P:ATP synthesis coupled electron transport; IEA:InterPro.
DR   InterPro; IPR001133; NADH_UbQ_OxRdtase_chain4L/K.
DR   PANTHER; PTHR11434; PTHR11434; 1.
PE   3: Inferred from homology;
KW   Electron transport; Membrane; Mitochondrion; Mitochondrion inner membrane;
KW   NAD; Reference proteome; Respiratory chain; Translocase; Transmembrane;
KW   Transmembrane helix; Transport; Ubiquinone.
FT   CHAIN           1..98
FT                   /note="NADH-ubiquinone oxidoreductase chain 4L"
FT                   /id="PRO_0000118500"
FT   TRANSMEM        1..21
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        48..68
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   98 AA;  10710 MW;  6426689788E3DBFD CRC64;
     MTLIHFSFCS AFILGLTGLA LNRSPILSIL LCLEGMLLMS MDGIVLTPLH LTIYLSSMML
     YIMLPFAAPE AATGLSLNSD HYTTHGTDKL FSLNLLEC