ID   MCR1_BOTFB              Reviewed;         346 AA.
AC   A6SI59;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-AUG-2007, sequence version 1.
DT   03-AUG-2022, entry version 74.
DE   RecName: Full=NADH-cytochrome b5 reductase 2;
DE            EC=1.6.2.2;
DE   AltName: Full=Mitochondrial cytochrome b reductase;
GN   Name=mcr1; ORFNames=BC1G_12441;
OS   Botryotinia fuckeliana (strain B05.10) (Noble rot fungus) (Botrytis
OS   cinerea).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Leotiomycetes;
OC   Helotiales; Sclerotiniaceae; Botrytis.
OX   NCBI_TaxID=332648;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=B05.10;
RX   PubMed=21876677; DOI=10.1371/journal.pgen.1002230;
RA   Amselem J., Cuomo C.A., van Kan J.A.L., Viaud M., Benito E.P., Couloux A.,
RA   Coutinho P.M., de Vries R.P., Dyer P.S., Fillinger S., Fournier E.,
RA   Gout L., Hahn M., Kohn L., Lapalu N., Plummer K.M., Pradier J.-M.,
RA   Quevillon E., Sharon A., Simon A., ten Have A., Tudzynski B., Tudzynski P.,
RA   Wincker P., Andrew M., Anthouard V., Beever R.E., Beffa R., Benoit I.,
RA   Bouzid O., Brault B., Chen Z., Choquer M., Collemare J., Cotton P.,
RA   Danchin E.G., Da Silva C., Gautier A., Giraud C., Giraud T., Gonzalez C.,
RA   Grossetete S., Gueldener U., Henrissat B., Howlett B.J., Kodira C.,
RA   Kretschmer M., Lappartient A., Leroch M., Levis C., Mauceli E.,
RA   Neuveglise C., Oeser B., Pearson M., Poulain J., Poussereau N.,
RA   Quesneville H., Rascle C., Schumacher J., Segurens B., Sexton A., Silva E.,
RA   Sirven C., Soanes D.M., Talbot N.J., Templeton M., Yandava C., Yarden O.,
RA   Zeng Q., Rollins J.A., Lebrun M.-H., Dickman M.;
RT   "Genomic analysis of the necrotrophic fungal pathogens Sclerotinia
RT   sclerotiorum and Botrytis cinerea.";
RL   PLoS Genet. 7:E1002230-E1002230(2011).
CC   -!- FUNCTION: May mediate the reduction of outer membrane cytochrome b5.
CC       {ECO:0000250}.
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   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692; Evidence={ECO:0000250};
CC   -!- SUBCELLULAR LOCATION: Mitochondrion outer membrane {ECO:0000250};
CC       Single-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the flavoprotein pyridine nucleotide cytochrome
CC       reductase family. {ECO:0000305}.
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DR   EMBL; CH476941; EDN18161.1; -; Genomic_DNA.
DR   RefSeq; XP_001549033.1; XM_001548983.1.
DR   AlphaFoldDB; A6SI59; -.
DR   SMR; A6SI59; -.
DR   PRIDE; A6SI59; -.
DR   GeneID; 5429512; -.
DR   KEGG; bfu:BCIN_05g01380; -.
DR   VEuPathDB; FungiDB:Bcin05g01380; -.
DR   OMA; NKHDHIA; -.
DR   OrthoDB; 1311668at2759; -.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
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   Gene3D; 3.40.50.80; -; 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; PTHR19370; 1.
DR   Pfam; PF00970; FAD_binding_6; 1.
DR   Pfam; PF00175; NAD_binding_1; 1.
DR   PRINTS; PR00371; FPNCR.
DR   SUPFAM; SSF52343; SSF52343; 1.
DR   SUPFAM; SSF63380; SSF63380; 1.
DR   PROSITE; PS51384; FAD_FR; 1.
PE   3: Inferred from homology;
KW   FAD; Flavoprotein; Membrane; Mitochondrion; Mitochondrion outer membrane;
KW   NAD; Oxidoreductase; Transmembrane; Transmembrane helix.
FT   CHAIN           1..346
FT                   /note="NADH-cytochrome b5 reductase 2"
FT                   /id="PRO_0000330175"
FT   TRANSMEM        28..50
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   DOMAIN          95..200
FT                   /note="FAD-binding FR-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00716"
FT   BINDING         203..238
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   346 AA;  37692 MW;  B997119F62632A2A CRC64;
     MFARQAIRAA QPLKSQYRRY ATESTSGGGS NAALYAGLAA AAGAGAYYFL NQGDNAAKVK
     DAAKDAEAKA KEAVGQGKSK VEGAVGKAAF TGGDQGFISL KLDSVENINH NTKKFRFELP
     ESDQVSGLQV ASALLTKFKG PEMQKPAIRP YTPTSDESEQ GFIDLLVKKY PNGVMSEHMH
     DMVPGQRLDF KGPIPKYPWS ANKHDHIALI AGGTGITPMY QLARAIFNNP ADKTKVTLVF
     ANVTEEDILL KREFEDLENT YPQRFRAFYV LDNPPKSWSG GKGFVNKELL KTVLPEPKTE
     NVKVFVCGPP GMYKAISGPK VSPSDQGELA GILKELGYSK EQVYKF