ID E3RJU2_PYRTT Unreviewed; 280 AA.
AC E3RJU2;
DT 11-JAN-2011, integrated into UniProtKB/TrEMBL.
DT 11-JAN-2011, sequence version 1.
DT 27-MAR-2024, entry version 54.
DE RecName: Full=NADH-cytochrome b5 reductase {ECO:0000256|RuleBase:RU361226};
DE EC=1.6.2.2 {ECO:0000256|RuleBase:RU361226};
GN ORFNames=PTT_08453 {ECO:0000313|EMBL:EFQ94028.1};
OS Pyrenophora teres f. teres (strain 0-1) (Barley net blotch fungus)
OS (Drechslera teres f. teres).
OC Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Dothideomycetes;
OC Pleosporomycetidae; Pleosporales; Pleosporineae; Pleosporaceae;
OC Pyrenophora.
OX NCBI_TaxID=861557 {ECO:0000313|Proteomes:UP000001067};
RN [1] {ECO:0000313|EMBL:EFQ94028.1, ECO:0000313|Proteomes:UP000001067}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=0-1 {ECO:0000313|EMBL:EFQ94028.1,
RC ECO:0000313|Proteomes:UP000001067};
RX PubMed=21067574; DOI=10.1186/gb-2010-11-11-r109;
RA Ellwood S.R., Liu Z., Syme R.A., Lai Z., Hane J.K., Keiper F., Moffat C.S.,
RA Oliver R.P., Friesen T.L.;
RT "A first genome assembly of the barley fungal pathogen Pyrenophora teres f.
RT teres.";
RL Genome Biol. 11:R109.1-R109.14(2010).
CC -!- FUNCTION: NADH-dependent reductase for DPH3 and cytochrome b5. Required
CC for the first step of diphthamide biosynthesis, a post-translational
CC modification of histidine which occurs in elongation factor 2. DPH1 and
CC DPH2 transfer a 3-amino-3-carboxypropyl (ACP) group from S-adenosyl-L-
CC methionine (SAM) to a histidine residue, the reaction is assisted by a
CC reduction system comprising DPH3 and a NADH-dependent reductase,
CC predominantly CBR1. By reducing DPH3, also involved in the formation of
CC the tRNA wobble base modification mcm5s 2U (5-methoxycarbonylmethyl-2-
CC thiouridine), mediated by the elongator complex. The cytochrome b5/NADH
CC cytochrome b5 reductase electron transfer system supports the catalytic
CC activity of several sterol biosynthetic enzymes.
CC {ECO:0000256|ARBA:ARBA00037104}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 Fe(3+)-[Dph3] + NADH = 2 Fe(2+)-[Dph3] + H(+) + NAD(+);
CC Xref=Rhea:RHEA:71231, Rhea:RHEA-COMP:18002, Rhea:RHEA-COMP:18003,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29033, ChEBI:CHEBI:29034,
CC ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:83228;
CC Evidence={ECO:0000256|ARBA:ARBA00036364};
CC PhysiologicalDirection=left-to-right; Xref=Rhea:RHEA:71232;
CC Evidence={ECO:0000256|ARBA:ARBA00036364};
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 -!- PATHWAY: Protein modification; peptidyl-diphthamide biosynthesis.
CC {ECO:0000256|ARBA:ARBA00005156}.
CC -!- SUBCELLULAR LOCATION: Mitochondrion outer membrane
CC {ECO:0000256|ARBA:ARBA00004572}; Single-pass membrane protein
CC {ECO:0000256|ARBA:ARBA00004572}.
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 EMBL; GL533554; EFQ94028.1; -; Genomic_DNA.
DR RefSeq; XP_003297897.1; XM_003297849.1.
DR AlphaFoldDB; E3RJU2; -.
DR STRING; 861557.E3RJU2; -.
DR EnsemblFungi; EFQ94028; EFQ94028; PTT_08453.
DR KEGG; pte:PTT_08453; -.
DR eggNOG; KOG0534; Eukaryota.
DR HOGENOM; CLU_003827_9_0_1; -.
DR OrthoDB; 979728at2759; -.
DR Proteomes; UP000001067; Unassembled WGS sequence.
DR GO; GO:0005741; C:mitochondrial outer membrane; IEA:UniProtKB-SubCell.
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:SF213; NADH-CYTOCHROME B5 REDUCTASE 1; 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|ARBA:ARBA00023136};
KW Mitochondrion {ECO:0000256|ARBA:ARBA00022787};
KW Mitochondrion outer membrane {ECO:0000256|ARBA:ARBA00022787};
KW NAD {ECO:0000256|ARBA:ARBA00023027, ECO:0000256|RuleBase:RU361226};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW ECO:0000256|RuleBase:RU361226};
KW Reference proteome {ECO:0000313|Proteomes:UP000001067};
KW Transferase {ECO:0000256|ARBA:ARBA00022679}.
FT DOMAIN 34..139
FT /note="FAD-binding FR-type"
FT /evidence="ECO:0000259|PROSITE:PS51384"
FT BINDING 88
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 90
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 105
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 107
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
FT BINDING 114
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 156
FT /ligand="FAD"
FT /ligand_id="ChEBI:CHEBI:57692"
FT /evidence="ECO:0000256|PIRSR:PIRSR601834-1"
SQ SEQUENCE 280 AA; 30496 MW; 44FA6CA7AB71D943 CRC64;
MDLLPVALAF AAIVGGFLFF RSSSAGSRKV LKPTEFQEFE LEHKEVLSHN TAIYRFKLPR
PTDILGLPIG QHISLAATIA GQPKEVVRSY TPITSDEDKG HVDLLIKSYP TGNISKHVAN
LRIGDKMKVK GPKGAMVYTP NMVRHFGMIA GGTGITPMLQ VAKAIMRGRA SGDRTEVDLI
FANVNPEDIL LKDDLDSLAA KDPKFRVHYV LNNPPEGWTG GVGFVSADMI KEKLPAPAND
IKILICGPPP MVAAMKKATE SLGYTKARPV SKLEDQVFCF
//
