ID K0SI16_THAOC Unreviewed; 309 AA.
AC K0SI16;
DT 28-NOV-2012, integrated into UniProtKB/TrEMBL.
DT 28-NOV-2012, sequence version 1.
DT 27-MAR-2024, entry version 43.
DE RecName: Full=NADH-cytochrome b5 reductase {ECO:0000256|RuleBase:RU361226};
DE EC=1.6.2.2 {ECO:0000256|RuleBase:RU361226};
GN ORFNames=THAOC_13290 {ECO:0000313|EMBL:EJK65813.1};
OS Thalassiosira oceanica (Marine diatom).
OC Eukaryota; Sar; Stramenopiles; Ochrophyta; Bacillariophyta;
OC Coscinodiscophyceae; Thalassiosirophycidae; Thalassiosirales;
OC Thalassiosiraceae; Thalassiosira.
OX NCBI_TaxID=159749 {ECO:0000313|EMBL:EJK65813.1, ECO:0000313|Proteomes:UP000266841};
RN [1] {ECO:0000313|EMBL:EJK65813.1, ECO:0000313|Proteomes:UP000266841}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CCMP1005 {ECO:0000313|EMBL:EJK65813.1,
RC ECO:0000313|Proteomes:UP000266841};
RX PubMed=22835381; DOI=10.1186/gb-2012-13-7-r66;
RA Lommer M., Specht M., Roy A.S., Kraemer L., Andreson R., Gutowska M.A.,
RA Wolf J., Bergner S.V., Schilhabel M.B., Klostermeier U.C., Beiko R.G.,
RA Rosenstiel P., Hippler M., Laroche J.;
RT "Genome and low-iron response of an oceanic diatom adapted to chronic iron
RT limitation.";
RL Genome Biol. 13:R66-R66(2012).
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|RuleBase:RU361226}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EJK65813.1}.
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DR EMBL; AGNL01015445; EJK65813.1; -; Genomic_DNA.
DR AlphaFoldDB; K0SI16; -.
DR EnsemblProtists; EJK65813; EJK65813; THAOC_13290.
DR eggNOG; KOG0534; Eukaryota.
DR OMA; VQIFMCG; -.
DR Proteomes; UP000266841; Unassembled WGS sequence.
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:SF185; 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}; 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:UP000266841};
KW Transmembrane {ECO:0000256|SAM:Phobius};
KW Transmembrane helix {ECO:0000256|SAM:Phobius}.
FT TRANSMEM 7..29
FT /note="Helical"
FT /evidence="ECO:0000256|SAM:Phobius"
FT DOMAIN 38..156
FT /note="FAD-binding FR-type"
FT /evidence="ECO:0000259|PROSITE:PS51384"
FT BINDING 96
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 98
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 113
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 115
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 130
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 131
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 132
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 190
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
SQ SEQUENCE 309 AA; 34209 MW; 08B89ECF8811965B CRC64;
MEAAQEIPVP VLTAVALVIV TTVVIMLLMK TKPALDPVEF KPFPLIKREE ISHDTRRFTF
ALPAGPNAKL GLPVGQHITL KFTETLEDGK TKNHQRSYTP VTGDDTPGSV TFVIKVYKAG
VHPKFPAGGK MSQHLDSLKV GDTVDMRGPK GHLDYHKNGA FTIHPLRKRD PSEERKAKHF
GMIAGGTGIT PMLQIMHAVL RDEPNSDVTV SLIYANQTED DILVREELED ALAKYDGRFK
LHYTLDRPPT GWKHSTGFIT KDMIDEHLPK AAGDGSTQIL MCGPPPMIKF ACLPNLEALG
FKKSDYFTF
//
