UniProtKB - Q9HGE0 (FUM6_GIBM7)
Protein
Bifunctional cytochrome P450/NADPH--P450 reductase
Gene
FUM6
Organism
Gibberella moniliformis (strain M3125 / FGSC 7600) (Maize ear and stalk rot fungus) (Fusarium verticillioides)
Status
Functioni
Bifunctional cytochrome P450/NADPH--P450 reductase; part of the gene cluster that mediates the biosynthesis of fumonisins B1 (FB1), B2 (FB2), B3 (FB3), and B4 (FB4), which are carcinogenic mycotoxins (PubMed:11728154, PubMed:15137825). On the basis of the chemical structures of fumonisins and precursor feeding studies, fumonisin biosynthesis is predicted to include at least five groups of biochemical reactions: synthesis of a linear polyketide with a single terminal carbonyl function and methyl groups at C-10 and C-14; condensation of the polyketide with alanine; reduction of the polyketide carbonyl to a hydroxyl; hydroxylation of 2-4 polyketide carbons; and esterification of six-carbon tricarboxylic acids to two of the hydroxyls (PubMed:12620260). The biosynthesis starts with the polyketide synthase FUM1-catalyzed carbon chain assembly from one molecule of acetyl CoA, eight molecules of malonyl CoA, and two molecules of methionine (PubMed:10413619). The C-18 polyketide chain is released from the enzyme by a nucleophilic attack of a carbanion, which is derived from R-carbon of alanine by decarboxylation, on the carbonyl carbon of polyketide acyl chain (PubMed:15137825, PubMed:12720383). This step is catalyzed by a pyridoxal 5'-phosphate-dependent aminoacyl transferase FUM8 (PubMed:15137825, PubMed:12720383). The resultant 3-keto intermediate 2-amino-3-oxo-12,16-dimethylicosane is then stereospecifically reduced to the 3-hydroxyl product 2-amino-3-hydroxy-12,16-dimethylicosane by reductase FUM13 (PubMed:12720383, PubMed:15137825). Subsequent oxidations at C-5, C-10, C-14 and C-15 followed by tricarballylic esterification of the hydroxyl groups on C-14 and C-15 furnish the biosynthesis of fumonisins (PubMed:15066782, PubMed:15137825, PubMed:16489749). The C-10 hydroxylation is performed by the cytochrome P450 monooxygenase FUM2 and occurs early in the biosynthesis (PubMed:16536629). The C-5 hydroxylation is performed by the dioxygenase FUM3 and occurs late in the biosynthesis (PubMed:20237561, PubMed:15066782, PubMed:15137825, PubMed:16536629). Cytochrome P450 monooxygenases FUM6 and FUM15 may be responsible for the two remaining hydroxylations at positions C-14 and C-15 (PubMed:12620260). The FUM11 tricarboxylate transporter makes a tricarboxylic acid precursor available for fumonisin biosynthesis via its export from the mitochondria (PubMed:12620260). If the precursor is citrate, the FUM7 dehydrogenase could remove the C-3 hydroxyl of citrate to form tricarballylic acid either before or after the CoA activation by the FUM10 acyl-CoA synthetase and FUM14 catalyzed esterification of CoA-activated tricarballylic acid to the C-14 and C-15 hydroxyls of the fumonisin backbone (PubMed:16489749, PubMed:17147424). Alternatively, if the precursor is cis-aconitate, FUM7 may function to reduce the double bond (PubMed:17147424). In this alternate proposal, feeding studies with tetradehydro-fumonisin B1 suggests that FUM7 cannot function on the tricarballylic ester and must therefore act before the FUM14-mediated esterification (PubMed:17147424).10 Publications
Catalytic activityi
- an organic molecule + O2 + reduced [NADPH—hemoprotein reductase] = an alcohol + H+ + H2O + oxidized [NADPH—hemoprotein reductase]By similarityEC:1.14.14.1By similarity
- EC:1.6.2.4By similarity
Cofactori
Protein has several cofactor binding sites:- FADBy similarityNote: Binds 1 FAD.By similarity
- FMNBy similarityNote: Binds 1 FMN.By similarity
- hemeBy similarity
: Mycotoxin biosynthesis Pathwayi
This protein is involved in Mycotoxin biosynthesis.2 PublicationsView all proteins of this organism that are known to be involved in Mycotoxin biosynthesis.
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sitei | 288 | Important for catalytic activityBy similarity | 1 | |
Metal bindingi | 422 | Iron (heme axial ligand)By similarity | 1 | |
Binding sitei | 618 | FMNBy similarity | 1 |
Regions
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Nucleotide bindingi | 528 – 533 | FMNBy similarity | 6 | |
Nucleotide bindingi | 528 – 532 | FMNPROSITE-ProRule annotation | 5 | |
Nucleotide bindingi | 576 – 579 | FMNBy similarity | 4 | |
Nucleotide bindingi | 607 – 639 | FMNPROSITE-ProRule annotationAdd BLAST | 33 |
GO - Molecular functioni
- aromatase activity Source: UniProtKB-EC
- FMN binding Source: InterPro
- heme binding Source: InterPro
- iron ion binding Source: InterPro
- NADPH-hemoprotein reductase activity Source: UniProtKB-EC
GO - Biological processi
- metabolic process Source: UniProtKB-KW
Keywordsi
Molecular function | Monooxygenase, Multifunctional enzyme, Oxidoreductase |
Biological process | Electron transport, Transport |
Ligand | FAD, Flavoprotein, FMN, Heme, Iron, Metal-binding, NADP |
Names & Taxonomyi
Protein namesi | Recommended name: Bifunctional cytochrome P450/NADPH--P450 reductase1 PublicationAlternative name(s): Fumonisin biosynthesis cluster protein 61 Publication Including the following 2 domains: |
Gene namesi | Name:FUM61 Publication ORF Names:FVEG_00317 |
Organismi | Gibberella moniliformis (strain M3125 / FGSC 7600) (Maize ear and stalk rot fungus) (Fusarium verticillioides) |
Taxonomic identifieri | 334819 [NCBI] |
Taxonomic lineagei | Eukaryota › Fungi › Dikarya › Ascomycota › Pezizomycotina › Sordariomycetes › Hypocreomycetidae › Hypocreales › Nectriaceae › Fusarium › Fusarium fujikuroi species complex › |
Proteomesi |
|
Pathology & Biotechi
Disruption phenotypei
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000441144 | 1 – 1115 | Bifunctional cytochrome P450/NADPH--P450 reductaseAdd BLAST | 1115 |
Expressioni
Inductioni
Expression correlates with fuminisins production (PubMed:11728154).1 Publication
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 522 – 664 | Flavodoxin-likePROSITE-ProRule annotationAdd BLAST | 143 | |
Domaini | 703 – 952 | FAD-binding FR-typePROSITE-ProRule annotationAdd BLAST | 250 |
Region
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Regioni | 16 – 494 | Cytochrome P450By similarityAdd BLAST | 479 | |
Regioni | 495 – 1115 | NADPH-P-450 reductaseBy similarityAdd BLAST | 621 |
Coiled coil
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Coiled coili | 219 – 246 | Sequence analysisAdd BLAST | 28 |
Sequence similaritiesi
In the N-terminal section; belongs to the cytochrome P450 family.Curated
Keywords - Domaini
Coiled coilPhylogenomic databases
eggNOGi | KOG0157, Eukaryota KOG1158, Eukaryota |
OMAi | ASYNGEP |
OrthoDBi | 174046at2759 |
Family and domain databases
Gene3Di | 1.10.630.10, 1 hit 1.20.990.10, 1 hit 3.40.50.360, 1 hit 3.40.50.80, 1 hit |
InterProi | View protein in InterPro IPR023206, Bifunctional_P450_P450_red IPR003097, CysJ-like_FAD-binding IPR001128, Cyt_P450 IPR017972, Cyt_P450_CS IPR002401, Cyt_P450_E_grp-I IPR036396, Cyt_P450_sf IPR017927, FAD-bd_FR_type IPR008254, Flavodoxin/NO_synth IPR029039, Flavoprotein-like_sf IPR039261, FNR_nucleotide-bd IPR023173, NADPH_Cyt_P450_Rdtase_alpha IPR001433, OxRdtase_FAD/NAD-bd IPR017938, Riboflavin_synthase-like_b-brl |
Pfami | View protein in Pfam PF00667, FAD_binding_1, 1 hit PF00258, Flavodoxin_1, 1 hit PF00175, NAD_binding_1, 1 hit PF00067, p450, 1 hit |
PIRSFi | PIRSF000209, Bifunctional_P450_P450R, 1 hit |
PRINTSi | PR00463, EP450I PR00385, P450 |
SUPFAMi | SSF48264, SSF48264, 1 hit SSF52218, SSF52218, 1 hit SSF52343, SSF52343, 1 hit SSF63380, SSF63380, 1 hit |
PROSITEi | View protein in PROSITE PS00086, CYTOCHROME_P450, 1 hit PS51384, FAD_FR, 1 hit PS50902, FLAVODOXIN_LIKE, 1 hit |
i Sequence
Sequence statusi: Complete.
Q9HGE0-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MSATALFTRR SVSTSNPELR PIPGPKPLPL LGNLFDFDFD NLTKSLGELG
60 70 80 90 100
KIHGPIYSIT FGASTEIMVT SREIAQELCD ETRFCKLPGG ALDVMKAVVG
110 120 130 140 150
DGLFTAETSN PKWAIAHRII TPLFGAMRIR GMFDDMKDIC EQMCLRWARF
160 170 180 190 200
GPDEPLNVCD NMTKLTLDTI ALCTIDYRFN SFYRENGAAH PFAEAVVDVM
210 220 230 240 250
TESFDQSNLP DFVNNYVRFR AMAKFKRQAA ELRRQTEELI AARRQNPVDR
260 270 280 290 300
DDLLNAMLSA KDPKTGEGLS PESIVDNLLT FLIAGHETTS SLLSFCFYYL
310 320 330 340 350
LENPHVLRRV QQEVDTVVGS DTITVDHLSS MPYLEAVLRE TLRLRDPGPG
360 370 380 390 400
FYVKPLKDEV VAGKYAVNKD QPLFIVFDSV HRDQSTYGAD ADEFRPERML
410 420 430 440 450
KDGFDKLPPC AWKPFGNGVR ACVGRPFAMQ QAILAVAMVL HKFDLVKDES
460 470 480 490 500
YTLKYHVTMT VRPVGFTMKV RLRQGQRATD LAMGLHRGHS QEASAAASPS
510 520 530 540 550
RASLKRLSSD VNGDDTDHKS QIAVLYASNS GSCEALAYRL AAEATERGFG
560 570 580 590 600
IRAVDVVNNA IDRIPVGSPV ILITASYNGE PADDAQEFVP WLKSLESGRL
610 620 630 640 650
NGVKFAVFGN GHRDWANTLF AVPRLIDSEL ARCGAERVSL MGVSDTCDSS
660 670 680 690 700
DPFSDFERWI DEKLFPELET PHGPGGVKNG DRAVPRQELQ VSLGQPPRIT
710 720 730 740 750
MRKGYVRAIV TEARSLSSPG VPEKRHLELL LPKDFNYKAG DHVYILPRNS
760 770 780 790 800
PRDVVRALSY FGLGEDTLIT IRNTARKLSL GLPLDTPITA TDLLGAYVEL
810 820 830 840 850
GRTASLKNLW TLVDAAGHGS RAALLSLTEP ERFRAEVQDR HVSILDLLER
860 870 880 890 900
FPDIDLSLSC FLPMLAQIRP RAYSFSSAPD WKPGHATLTY TVVDFATPAT
910 920 930 940 950
QGINGSSKSK AVGDGTAVVQ RQGLASSYLS SLGPGTSLYV SLHRASPYFC
960 970 980 990 1000
LQKSTSLPVI MVGAGTGLAP FRAFLQERRM AAEGAKQRFG PALLFFGCRG
1010 1020 1030 1040 1050
PRLDSLYSVE LEAYETIGLV QVRRAYSRDP SAQDAQGCKY VTDRLGKCRD
1060 1070 1080 1090 1100
EVARLWMDGA QVLVCGGKKM ANDVLEVLGP MLLEIDQKRG ETTAKTVVEW
1110
RARLDKSRYV EEVYV
Sequence cautioni
The sequence EWG36196 differs from that shown. Reason: Erroneous initiation. Truncated N-terminus.Curated
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AF155773 Genomic DNA Translation: AAG27132.1 DS022242 Genomic DNA Translation: EWG36196.1 Sequence problems. |
RefSeqi | XP_018742387.1, XM_018886755.1 |
Genome annotation databases
GeneIDi | 30058695 |
KEGGi | fvr:FVEG_00317 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AF155773 Genomic DNA Translation: AAG27132.1 DS022242 Genomic DNA Translation: EWG36196.1 Sequence problems. |
RefSeqi | XP_018742387.1, XM_018886755.1 |
3D structure databases
SMRi | Q9HGE0 |
ModBasei | Search... |
Protein-protein interaction databases
STRINGi | 117187.FVEG_00317T0 |
Genome annotation databases
GeneIDi | 30058695 |
KEGGi | fvr:FVEG_00317 |
Phylogenomic databases
eggNOGi | KOG0157, Eukaryota KOG1158, Eukaryota |
OMAi | ASYNGEP |
OrthoDBi | 174046at2759 |
Family and domain databases
Gene3Di | 1.10.630.10, 1 hit 1.20.990.10, 1 hit 3.40.50.360, 1 hit 3.40.50.80, 1 hit |
InterProi | View protein in InterPro IPR023206, Bifunctional_P450_P450_red IPR003097, CysJ-like_FAD-binding IPR001128, Cyt_P450 IPR017972, Cyt_P450_CS IPR002401, Cyt_P450_E_grp-I IPR036396, Cyt_P450_sf IPR017927, FAD-bd_FR_type IPR008254, Flavodoxin/NO_synth IPR029039, Flavoprotein-like_sf IPR039261, FNR_nucleotide-bd IPR023173, NADPH_Cyt_P450_Rdtase_alpha IPR001433, OxRdtase_FAD/NAD-bd IPR017938, Riboflavin_synthase-like_b-brl |
Pfami | View protein in Pfam PF00667, FAD_binding_1, 1 hit PF00258, Flavodoxin_1, 1 hit PF00175, NAD_binding_1, 1 hit PF00067, p450, 1 hit |
PIRSFi | PIRSF000209, Bifunctional_P450_P450R, 1 hit |
PRINTSi | PR00463, EP450I PR00385, P450 |
SUPFAMi | SSF48264, SSF48264, 1 hit SSF52218, SSF52218, 1 hit SSF52343, SSF52343, 1 hit SSF63380, SSF63380, 1 hit |
PROSITEi | View protein in PROSITE PS00086, CYTOCHROME_P450, 1 hit PS51384, FAD_FR, 1 hit PS50902, FLAVODOXIN_LIKE, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | FUM6_GIBM7 | |
Accessioni | Q9HGE0Primary (citable) accession number: Q9HGE0 Secondary accession number(s): W7LC82 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | August 30, 2017 |
Last sequence update: | March 1, 2001 | |
Last modified: | April 7, 2021 | |
This is version 111 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Fungal Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
Reference proteomeDocuments
- PATHWAY comments
Index of metabolic and biosynthesis pathways - SIMILARITY comments
Index of protein domains and families