ID   MCR1_SCLS1              Reviewed;         345 AA.
AC   A7EKT5;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   11-SEP-2007, sequence version 1.
DT   03-AUG-2022, entry version 78.
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=SS1G_05932;
OS   Sclerotinia sclerotiorum (strain ATCC 18683 / 1980 / Ss-1) (White mold)
OS   (Whetzelinia sclerotiorum).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Leotiomycetes;
OC   Helotiales; Sclerotiniaceae; Sclerotinia.
OX   NCBI_TaxID=665079;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 18683 / 1980 / Ss-1;
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; CH476627; EDO03451.1; -; Genomic_DNA.
DR   RefSeq; XP_001593010.1; XM_001592960.1.
DR   AlphaFoldDB; A7EKT5; -.
DR   SMR; A7EKT5; -.
DR   STRING; 665079.A7EKT5; -.
DR   EnsemblFungi; EDO03451; EDO03451; SS1G_05932.
DR   GeneID; 5488857; -.
DR   KEGG; ssl:SS1G_05932; -.
DR   VEuPathDB; FungiDB:sscle_05g046130; -.
DR   eggNOG; KOG0534; Eukaryota.
DR   HOGENOM; CLU_003827_9_1_1; -.
DR   InParanoid; A7EKT5; -.
DR   OMA; NKHDHIA; -.
DR   Proteomes; UP000001312; Unassembled WGS sequence.
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; IBA:GO_Central.
DR   GO; GO:0006696; P:ergosterol biosynthetic process; IBA:GO_Central.
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; Reference proteome; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..345
FT                   /note="NADH-cytochrome b5 reductase 2"
FT                   /id="PRO_0000330190"
FT   TRANSMEM        31..47
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   DOMAIN          94..199
FT                   /note="FAD-binding FR-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00716"
FT   BINDING         202..237
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   345 AA;  37819 MW;  802B93D76510FC22 CRC64;
     MFARQTLRAA QPFRSQYRRY ATESSSSGSN TALYTGVAAA VAGAGYYFMS QGDNAAKVKD
     AAKDAEAKAK EALGQGQAKV EGAVGKAAFT GGDQGFISLK LDSVELVNHN TKKFRFELPE
     SDQVSGLHVT SALITKYKGP EMQKPAIRPY TPTSDEGEKG FIDLLVKKYP NGVMSEHMHE
     MVPGQRLDFK GPIPKYAWSA NKHDHIALIA GGTGITPMYQ LARAIFNNPA DKTKVTLVFA
     NVTEEDILLK REFEDLENTY PQRFRAFYVL DNPPKSWKGG KGFINKELLK TVLPEPKSEN
     IKLFVCGPPG MYKAISGGKV SPSDQGELAG ILKELGYSKD QVYKF