ID A0A3B3VXH2_9TELE Unreviewed; 290 AA.
AC A0A3B3VXH2;
DT 05-DEC-2018, integrated into UniProtKB/TrEMBL.
DT 05-DEC-2018, sequence version 1.
DT 27-MAR-2024, entry version 24.
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};
OS Poecilia latipinna (sailfin molly).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC Ovalentaria; Atherinomorphae; Cyprinodontiformes; Poeciliidae; Poeciliinae;
OC Poecilia.
OX NCBI_TaxID=48699 {ECO:0000313|Ensembl:ENSPLAP00000030480.1, ECO:0000313|Proteomes:UP000261500};
RN [1] {ECO:0000313|Ensembl:ENSPLAP00000030480.1}
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 RefSeq; XP_014872452.1; XM_015016966.1.
DR AlphaFoldDB; A0A3B3VXH2; -.
DR STRING; 48699.ENSPLAP00000030480; -.
DR Ensembl; ENSPLAT00000031372.1; ENSPLAP00000030480.1; ENSPLAG00000021592.1.
DR GeneID; 106936138; -.
DR GeneTree; ENSGT00950000183197; -.
DR OrthoDB; 2877457at2759; -.
DR Proteomes; UP000261500; Unplaced.
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 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 55..77
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 97..117
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 129..152
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 164..191
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 203..224
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT TRANSMEM 244..265
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 60..266
FT /note="Cytochrome b561"
FT /evidence="ECO:0000259|PROSITE:PS50939"
SQ SEQUENCE 290 AA; 31947 MW; 1FAD6A894C991430 CRC64;
MERNGTQSPD CPGSFPYVFE RFPLVSLSTD GENETSPQKN KTIPTGCMRS TVTFYLCYLL
CLALGLACVV CVCLWNSRWR GGFAWDGSRL QFNWHPVLMV TGLLVLYGYG AVVYRVPLTW
GQNKLPWKLL HAALMLGSLI MSILGLCAVF DFHNTNNTPN LYSLHSWIGI TAIILFTLQW
GVGFAGFLLP CSPVLLRKLL KPIHVWLGGS ILLLTTAACI SGINEKLFFV LKGNVTYSSI
PAEGVLGNSL GALVVAFGLV VLKILSTIQW QRPDSRPGDI AYTPLQDEND
//
