ID   A0A672I2V8_SALFA        Unreviewed;       308 AA.
AC   A0A672I2V8;
DT   17-JUN-2020, integrated into UniProtKB/TrEMBL.
DT   17-JUN-2020, sequence version 1.
DT   24-JAN-2024, entry version 16.
DE   RecName: Full=NADH-cytochrome b5 reductase {ECO:0000256|RuleBase:RU361226};
DE            EC=1.6.2.2 {ECO:0000256|RuleBase:RU361226};
GN   Name=LOC115391864 {ECO:0000313|Ensembl:ENSSFAP00005035928.1};
OS   Salarias fasciatus (Jewelled blenny) (Blennius fasciatus).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC   Ovalentaria; Blenniimorphae; Blenniiformes; Blennioidei; Blenniidae;
OC   Salariinae; Salarias.
OX   NCBI_TaxID=181472 {ECO:0000313|Ensembl:ENSSFAP00005035928.1, ECO:0000313|Proteomes:UP000472267};
RN   [1] {ECO:0000313|Ensembl:ENSSFAP00005035928.1}
RP   IDENTIFICATION.
RG   Ensembl;
RL   Submitted (SEP-2023) to UniProtKB.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2 Fe(III)-[cytochrome b5] + NADH = 2 Fe(II)-[cytochrome b5] +
CC         H(+) + NAD(+); Xref=Rhea:RHEA:46680, Rhea:RHEA-COMP:10438, Rhea:RHEA-
CC         COMP:10439, ChEBI:CHEBI:15378, ChEBI:CHEBI:29033, ChEBI:CHEBI:29034,
CC         ChEBI:CHEBI:57540, ChEBI:CHEBI:57945; EC=1.6.2.2;
CC         Evidence={ECO:0000256|RuleBase:RU361226};
CC   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692;
CC         Evidence={ECO:0000256|ARBA:ARBA00001974,
CC         ECO:0000256|PIRSR:PIRSR601834-1, ECO:0000256|RuleBase:RU361226};
CC   -!- SIMILARITY: Belongs to the flavoprotein pyridine nucleotide cytochrome
CC       reductase family. {ECO:0000256|ARBA:ARBA00006105,
CC       ECO:0000256|RuleBase:RU361226}.
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DR   AlphaFoldDB; A0A672I2V8; -.
DR   Ensembl; ENSSFAT00005037280.1; ENSSFAP00005035928.1; ENSSFAG00005018054.1.
DR   InParanoid; A0A672I2V8; -.
DR   OMA; QITHNTR; -.
DR   Proteomes; UP000472267; Unplaced.
DR   GO; GO:0016020; C:membrane; IEA:UniProtKB-KW.
DR   GO; GO:0004128; F:cytochrome-b5 reductase activity, acting on NAD(P)H; IEA:UniProtKB-EC.
DR   CDD; cd06183; cyt_b5_reduct_like; 1.
DR   Gene3D; 3.40.50.80; Nucleotide-binding domain of ferredoxin-NADP reductase (FNR) module; 1.
DR   Gene3D; 2.40.30.10; Translation factors; 1.
DR   InterPro; IPR001834; CBR-like.
DR   InterPro; IPR008333; Cbr1-like_FAD-bd_dom.
DR   InterPro; IPR017927; FAD-bd_FR_type.
DR   InterPro; IPR001709; Flavoprot_Pyr_Nucl_cyt_Rdtase.
DR   InterPro; IPR039261; FNR_nucleotide-bd.
DR   InterPro; IPR001433; OxRdtase_FAD/NAD-bd.
DR   InterPro; IPR017938; Riboflavin_synthase-like_b-brl.
DR   PANTHER; PTHR19370; NADH-CYTOCHROME B5 REDUCTASE; 1.
DR   PANTHER; PTHR19370:SF108; NADH-CYTOCHROME B5 REDUCTASE 2; 1.
DR   Pfam; PF00970; FAD_binding_6; 1.
DR   Pfam; PF00175; NAD_binding_1; 1.
DR   PRINTS; PR00406; CYTB5RDTASE.
DR   PRINTS; PR00371; FPNCR.
DR   SUPFAM; SSF52343; Ferredoxin reductase-like, C-terminal NADP-linked domain; 1.
DR   SUPFAM; SSF63380; Riboflavin synthase domain-like; 1.
DR   PROSITE; PS51384; FAD_FR; 1.
PE   3: Inferred from homology;
KW   FAD {ECO:0000256|ARBA:ARBA00022827, ECO:0000256|PIRSR:PIRSR601834-1};
KW   Flavoprotein {ECO:0000256|ARBA:ARBA00022630, ECO:0000256|PIRSR:PIRSR601834-
KW   1}; Lipid metabolism {ECO:0000256|ARBA:ARBA00023098};
KW   Membrane {ECO:0000256|SAM:Phobius};
KW   NAD {ECO:0000256|ARBA:ARBA00023027, ECO:0000256|RuleBase:RU361226};
KW   Oxidoreductase {ECO:0000256|RuleBase:RU361226};
KW   Reference proteome {ECO:0000313|Proteomes:UP000472267};
KW   Transmembrane {ECO:0000256|SAM:Phobius};
KW   Transmembrane helix {ECO:0000256|SAM:Phobius}.
FT   TRANSMEM        12..31
FT                   /note="Helical"
FT                   /evidence="ECO:0000256|SAM:Phobius"
FT   DOMAIN          47..159
FT                   /note="FAD-binding FR-type"
FT                   /evidence="ECO:0000259|PROSITE:PS51384"
FT   BINDING         99
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT   BINDING         101
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT   BINDING         116
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT   BINDING         118
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT   BINDING         133
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT   BINDING         135
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT   BINDING         192
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
SQ   SEQUENCE   308 AA;  34504 MW;  57E51046B30AD88E CRC64;
     RRASRSAAVL QMLPLLAAVS VVLLSVLLVF LRTFSGEKRK RTLLDPNVKY PLPLIHKQEI
     SHDTKKLRFG LPSGEHALGL PVGQHVYLSA RVGGSLVVRA YTPISSDQDL GYVDLLVKVY
     HRNTHPSFPE GGKLSQHLDS LSIGDTVDFR GPSGLLVYKD HGRFSIRPDK KAEPQVRRFR
     EVAMIAGGTG ITPMLQLIRR ITAEPSDRTK CSLIFANQTE KDILLREELE QLETEHPENL
     RVWFTLDRPE PGWRFGSGFV TRDMMEQRLP AAAPDVLVVL CGPPAMIQNA CLPNLDRLGH
     QPHNIFTY
//