ID   AOX4_AERPE              Reviewed;         103 AA.
AC   Q9YDX4;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   10-JUL-2007, sequence version 2.
DT   25-MAY-2022, entry version 74.
DE   RecName: Full=Heme-copper oxidase subunit 4;
DE            EC=1.9.3.-;
DE   AltName: Full=Heme-copper oxidase subunit IV;
GN   Name=aoxC; OrderedLocusNames=APE_0795.1;
OS   Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 /
OS   K1).
OC   Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales;
OC   Desulfurococcaceae; Aeropyrum.
OX   NCBI_TaxID=272557;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1;
RA   Wakagi T., Ishikawa R.;
RT   "Heme-copper-oxidase.";
RL   Submitted (NOV-1998) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1;
RX   PubMed=10382966; DOI=10.1093/dnares/6.2.83;
RA   Kawarabayasi Y., Hino Y., Horikawa H., Yamazaki S., Haikawa Y., Jin-no K.,
RA   Takahashi M., Sekine M., Baba S., Ankai A., Kosugi H., Hosoyama A.,
RA   Fukui S., Nagai Y., Nishijima K., Nakazawa H., Takamiya M., Masuda S.,
RA   Funahashi T., Tanaka T., Kudoh Y., Yamazaki J., Kushida N., Oguchi A.,
RA   Aoki K., Kubota K., Nakamura Y., Nomura N., Sako Y., Kikuchi H.;
RT   "Complete genome sequence of an aerobic hyper-thermophilic crenarchaeon,
RT   Aeropyrum pernix K1.";
RL   DNA Res. 6:83-101(1999).
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000305}; Multi-pass membrane
CC       protein {ECO:0000305}.
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DR   EMBL; AB020482; BAA86073.1; -; Genomic_DNA.
DR   EMBL; BA000002; BAA79773.2; -; Genomic_DNA.
DR   PIR; E72671; E72671.
DR   AlphaFoldDB; Q9YDX4; -.
DR   STRING; 272557.APE_0795.1; -.
DR   EnsemblBacteria; BAA79773; BAA79773; APE_0795.1.
DR   KEGG; ape:APE_0795.1; -.
DR   eggNOG; arCOG15028; Archaea.
DR   Proteomes; UP000002518; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0005886; C:plasma membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0070469; C:respirasome; IEA:UniProtKB-KW.
DR   GO; GO:0016491; F:oxidoreductase activity; IEA:UniProtKB-KW.
DR   InterPro; IPR005171; Cyt_c_oxidase_su4_prok.
DR   Pfam; PF03626; COX4_pro; 1.
PE   4: Predicted;
KW   Cell membrane; Electron transport; Membrane; Oxidoreductase;
KW   Reference proteome; Respiratory chain; Transmembrane; Transmembrane helix;
KW   Transport.
FT   CHAIN           1..103
FT                   /note="Heme-copper oxidase subunit 4"
FT                   /id="PRO_0000183906"
FT   TRANSMEM        20..40
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        42..62
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TRANSMEM        75..95
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   103 AA;  10987 MW;  FCEE88F4116BF65F CRC64;
     MASGGGFEDL AREAAKYFGV WIVLVASAVA EVYLVLEGIA RNPFVFVLAV ALFQSSLIAL
     FFQHLRDEPI IIRGITVSGA VLIAILIISA VTSVLTCTPY FPG