ID A0A452RTD0_URSAM Unreviewed; 242 AA.
AC A0A452RTD0;
DT 08-MAY-2019, integrated into UniProtKB/TrEMBL.
DT 08-MAY-2019, sequence version 1.
DT 27-MAR-2024, entry version 25.
DE RecName: Full=Lysosomal membrane ascorbate-dependent ferrireductase CYB561A3 {ECO:0000256|ARBA:ARBA00040498};
DE EC=7.2.1.3 {ECO:0000256|ARBA:ARBA00024225};
DE AltName: Full=Cytochrome b ascorbate-dependent protein 3 {ECO:0000256|ARBA:ARBA00042571};
DE AltName: Full=Lysosomal cytochrome b {ECO:0000256|ARBA:ARBA00042550};
GN Name=CYB561A3 {ECO:0000313|Ensembl:ENSUAMP00000022668.1};
OS Ursus americanus (American black bear) (Euarctos americanus).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Carnivora; Caniformia; Ursidae; Ursus.
OX NCBI_TaxID=9643 {ECO:0000313|Ensembl:ENSUAMP00000022668.1, ECO:0000313|Proteomes:UP000291022};
RN [1] {ECO:0000313|Proteomes:UP000291022}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA Korstanje R., Srivastava A., Sarsani V.K., Sheehan S.M., Seger R.L.,
RA Barter M.E., Lindqvist C., Brody L.C., Mullikin J.C.;
RT "De novo assembly and RNA-Seq shows season-dependent expression and editing
RT in black bear kidneys.";
RL Submitted (JUN-2016) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|Ensembl:ENSUAMP00000022668.1}
RP IDENTIFICATION.
RG Ensembl;
RL Submitted (SEP-2023) to UniProtKB.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Fe(3+)(out) + L-ascorbate(in) = Fe(2+)(out) + H(+) +
CC monodehydro-L-ascorbate radical(in); Xref=Rhea:RHEA:30403,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29033, ChEBI:CHEBI:29034,
CC ChEBI:CHEBI:38290, ChEBI:CHEBI:59513; EC=7.2.1.3;
CC Evidence={ECO:0000256|ARBA:ARBA00024157};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:30404;
CC Evidence={ECO:0000256|ARBA:ARBA00024157};
CC -!- COFACTOR:
CC Name=heme b; Xref=ChEBI:CHEBI:60344;
CC Evidence={ECO:0000256|ARBA:ARBA00001970};
CC -!- SUBCELLULAR LOCATION: Late endosome membrane
CC {ECO:0000256|ARBA:ARBA00004107}; Multi-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004107}. Membrane
CC {ECO:0000256|ARBA:ARBA00004141}; Multi-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004141}.
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DR AlphaFoldDB; A0A452RTD0; -.
DR Ensembl; ENSUAMT00000025330.1; ENSUAMP00000022668.1; ENSUAMG00000017801.1.
DR GeneTree; ENSGT00950000183197; -.
DR OMA; FKFHDMV; -.
DR Proteomes; UP000291022; Unassembled WGS sequence.
DR GO; GO:0031902; C:late endosome membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0005765; C:lysosomal membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0016491; F:oxidoreductase activity; IEA:InterPro.
DR Gene3D; 1.20.120.1770; -; 1.
DR InterPro; IPR043205; CYB561/CYBRD1-like.
DR InterPro; IPR006593; Cyt_b561/ferric_Rdtase_TM.
DR PANTHER; PTHR10106; CYTOCHROME B561-RELATED; 1.
DR PANTHER; PTHR10106:SF0; LYSOSOMAL MEMBRANE ASCORBATE-DEPENDENT FERRIREDUCTASE CYB561A3; 1.
DR Pfam; PF03188; Cytochrom_B561; 1.
DR SMART; SM00665; B561; 1.
DR PROSITE; PS50939; CYTOCHROME_B561; 1.
PE 4: Predicted;
KW Heme {ECO:0000256|ARBA:ARBA00022617}; Iron {ECO:0000256|ARBA:ARBA00023004};
KW Membrane {ECO:0000256|ARBA:ARBA00023136, ECO:0000256|SAM:Phobius};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022617};
KW Reference proteome {ECO:0000313|Proteomes:UP000291022};
KW Transmembrane {ECO:0000256|ARBA:ARBA00022692, ECO:0000256|SAM:Phobius};
KW Transmembrane helix {ECO:0000256|ARBA:ARBA00022989,
KW ECO:0000256|SAM:Phobius}; Transport {ECO:0000256|ARBA:ARBA00022448}.
FT TRANSMEM 7..28
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 48..69
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 81..104
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 116..143
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 155..175
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 198..219
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 12..219
FT /note="Cytochrome b561"
FT /evidence="ECO:0000259|PROSITE:PS50939"
SQ SEQUENCE 242 AA; 27420 MW; 3959375F8DE02E15 CRC64;
MAVRWFYLSF YALWFLGLMS IILTIYWMQL WHGGFAWDGT VLMFNYHPVL MVVGLVVLYS
AASLLYRLPQ SWTGPKLPWK IGHAALHLLA FVLTVLGLVA VFQLHRRSKI TNLYSLHSWL
GIVTVFLFAC QWFLGFVVFL LPWASVWLRS LLKPIHLFFG VIILSLSIAS VISGINEKLF
FSLNNATQPY SSLPGEAIFA NSLGMLVVVF GLLVLYILLV SSWKRPEPGI LTEGQPLLRD
GE
//
