ID   COX4_NOCFA              Reviewed;         138 AA.
AC   Q5YZ36;
DT   26-APR-2005, integrated into UniProtKB/Swiss-Prot.
DT   23-NOV-2004, sequence version 1.
DT   27-MAR-2024, entry version 99.
DE   RecName: Full=Probable cytochrome c oxidase polypeptide 4;
DE            EC=7.1.1.9;
DE   AltName: Full=Cytochrome aa3 subunit 4;
DE   AltName: Full=Cytochrome c oxidase polypeptide IV;
GN   Name=ctaF; OrderedLocusNames=NFA_17090;
OS   Nocardia farcinica (strain IFM 10152).
OC   Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales; Nocardiaceae;
OC   Nocardia.
OX   NCBI_TaxID=247156;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=IFM 10152;
RX   PubMed=15466710; DOI=10.1073/pnas.0406410101;
RA   Ishikawa J., Yamashita A., Mikami Y., Hoshino Y., Kurita H., Hotta K.,
RA   Shiba T., Hattori M.;
RT   "The complete genomic sequence of Nocardia farcinica IFM 10152.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:14925-14930(2004).
CC   -!- FUNCTION: Part of cytochrome c oxidase, its function is unknown.
CC       {ECO:0000250}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=4 Fe(II)-[cytochrome c] + 8 H(+)(in) + O2 = 4 Fe(III)-
CC         [cytochrome c] + 4 H(+)(out) + 2 H2O; Xref=Rhea:RHEA:11436,
CC         Rhea:RHEA-COMP:10350, Rhea:RHEA-COMP:14399, ChEBI:CHEBI:15377,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:15379, ChEBI:CHEBI:29033,
CC         ChEBI:CHEBI:29034; EC=7.1.1.9;
CC   -!- SUBUNIT: Associates with subunits I, II and III to form cytochrome c
CC       oxidase. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000250}; Multi-pass membrane
CC       protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the cytochrome c oxidase bacterial subunit CtaF
CC       family. {ECO:0000305}.
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DR   EMBL; AP006618; BAD56555.1; -; Genomic_DNA.
DR   RefSeq; WP_011208240.1; NC_006361.1.
DR   AlphaFoldDB; Q5YZ36; -.
DR   SMR; Q5YZ36; -.
DR   STRING; 247156.NFA_17090; -.
DR   GeneID; 61132492; -.
DR   KEGG; nfa:NFA_17090; -.
DR   eggNOG; ENOG5032SZC; Bacteria.
DR   HOGENOM; CLU_145919_0_0_11; -.
DR   OrthoDB; 5244617at2; -.
DR   Proteomes; UP000006820; Chromosome.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0004129; F:cytochrome-c oxidase activity; IEA:UniProtKB-EC.
DR   InterPro; IPR021050; Cyt_c_oxidase_su4_actinobac.
DR   Pfam; PF12270; Cyt_c_ox_IV; 1.
DR   PIRSF; PIRSF017385; CtaF; 1.
PE   3: Inferred from homology;
KW   Cell membrane; Membrane; Reference proteome; Translocase; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..138
FT                   /note="Probable cytochrome c oxidase polypeptide 4"
FT                   /id="PRO_0000220020"
FT   TRANSMEM        7..27
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        35..55
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        81..101
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        102..122
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   138 AA;  14903 MW;  3CFDDBC69437DCDB CRC64;
     MRIEARIFEL LTVFFIIVGV VYGFFTAQSR TGVEWAGTTA IVLTAGLSLI IGTYFRFVAR
     RLDLRPEDYE DAEIVDGAGD LGFFSPGSFW PILLAGAGSV AALGLAFFEP WLIAVGVICV
     IAAAAGLVFE YHLGPEKH
//