ID   MCR1_ASPTN              Reviewed;         319 AA.
AC   Q0CRD8;
DT   29-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT   29-APR-2008, sequence version 2.
DT   03-AUG-2022, entry version 71.
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=ATEG_03746;
OS   Aspergillus terreus (strain NIH 2624 / FGSC A1156).
OC   Eukaryota; Fungi; Dikarya; Ascomycota; Pezizomycotina; Eurotiomycetes;
OC   Eurotiomycetidae; Eurotiales; Aspergillaceae; Aspergillus;
OC   Aspergillus subgen. Circumdati.
OX   NCBI_TaxID=341663;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIH 2624 / FGSC A1156;
RA   Birren B.W., Lander E.S., Galagan J.E., Nusbaum C., Devon K., Henn M.,
RA   Ma L.-J., Jaffe D.B., Butler J., Alvarez P., Gnerre S., Grabherr M.,
RA   Kleber M., Mauceli E.W., Brockman W., Rounsley S., Young S.K., LaButti K.,
RA   Pushparaj V., DeCaprio D., Crawford M., Koehrsen M., Engels R.,
RA   Montgomery P., Pearson M., Howarth C., Larson L., Luoma S., White J.,
RA   Alvarado L., Kodira C.D., Zeng Q., Oleary S., Yandava C., Denning D.W.,
RA   Nierman W.C., Milne T., Madden K.;
RT   "Annotation of the Aspergillus terreus NIH2624 genome.";
RL   Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases.
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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=EAU35548.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};
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DR   EMBL; CH476598; EAU35548.1; ALT_SEQ; Genomic_DNA.
DR   RefSeq; XP_001212924.1; XM_001212924.1.
DR   AlphaFoldDB; Q0CRD8; -.
DR   SMR; Q0CRD8; -.
DR   STRING; 341663.Q0CRD8; -.
DR   GeneID; 4318618; -.
DR   eggNOG; KOG0534; Eukaryota.
DR   OrthoDB; 1311668at2759; -.
DR   Proteomes; UP000007963; 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; 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; Reference proteome; Transmembrane;
KW   Transmembrane helix.
FT   CHAIN           1..319
FT                   /note="NADH-cytochrome b5 reductase 2"
FT                   /id="PRO_0000330174"
FT   TRANSMEM        30..46
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   DOMAIN          69..173
FT                   /note="FAD-binding FR-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00716"
FT   BINDING         176..211
FT                   /ligand="FAD"
FT                   /ligand_id="ChEBI:CHEBI:57692"
FT                   /evidence="ECO:0000250"
SQ   SEQUENCE   319 AA;  35834 MW;  F67DDE30D95B91A9 CRC64;
     MFARQTFRYA QPLKQSFRKY STEAPKGKSL APVYLTVGLA GLGVGLYRYN SATAEAPAER
     AKVFTGGDQG WVDLKLSEIE VLNHNTKRFR FEFEDKEAVS GLNVASALLT KFKPEGGKAV
     LRPYTPVSDE SQPGFLDLVV KVYPNGPMSE HLHSMNVDQR LEFKGPLPKY PWEANKHQHI
     CLIAGGTGIT PMYQLARHIF KNPEDKTKVT LVYGNVSEQD ILLKKELEEL ENTYPQRFKA
     FYVLDNPPKE WTGGKGYISK ELLKTVLPEP KEENIKIFVC GPPGLYKAIS GNKVSPKDQG
     ELTGILKELG YSQEQVFKF