UniProtKB - O31669 (MTND_BACSU)
Protein
Acireductone dioxygenase
Gene
mtnD
Organism
Bacillus subtilis (strain 168)
Status
Functioni
Catalyzes 2 different reactions between oxygene and the acireductone 1,2-dihydroxy-3-keto-5-methylthiopentene (DHK-MTPene) depending upon the metal bound in the active site. Fe-containing acireductone dioxygenase (Fe-ARD) produces formate and 2-keto-4-methylthiobutyrate (KMTB), the alpha-ketoacid precursor of methionine in the methionine recycle pathway. Ni-containing acireductone dioxygenase (Ni-ARD) produces methylthiopropionate, carbon monoxide and formate, and does not lie on the methionine recycle pathway.1 Publication
Catalytic activityi
- 1,2-dihydroxy-5-(methylsulfanyl)pent-1-en-3-one + O2 = 3-(methylsulfanyl)propanoate + CO + formate + 2 H+EC:1.13.11.53
- 1,2-dihydroxy-5-(methylsulfanyl)pent-1-en-3-one + O2 = 4-methylsulfanyl-2-oxobutanoate + formate + 2 H+EC:1.13.11.54
Cofactori
Protein has several cofactor binding sites:- Fe cationCuratedNote: Binds 1 Fe cation per monomer.Curated
- Ni2+CuratedNote: Binds 1 nickel ion per monomer.Curated
: L-methionine biosynthesis via salvage pathway Pathwayi
This protein is involved in step 5 of the subpathway that synthesizes L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate.Proteins known to be involved in the 6 steps of the subpathway in this organism are:
- Methylthioribose-1-phosphate isomerase (mtnA), Methylthioribose-1-phosphate isomerase (mtnA)
- Methylthioribulose-1-phosphate dehydratase (mtnB), Methylthioribulose-1-phosphate dehydratase (mtnB)
- 2,3-diketo-5-methylthiopentyl-1-phosphate enolase (mtnW), 2,3-diketo-5-methylthiopentyl-1-phosphate enolase (mtnW)
- 2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate phosphatase (mtnX), 2-hydroxy-3-keto-5-methylthiopentenyl-1-phosphate phosphatase (mtnX)
- Acireductone dioxygenase (mtnD), Acireductone dioxygenase (mtnD)
- L-glutamine--4-(methylsulfanyl)-2-oxobutanoate aminotransferase (mtnE)
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-methionine from S-methyl-5-thio-alpha-D-ribose 1-phosphate, the pathway L-methionine biosynthesis via salvage pathway and in Amino-acid biosynthesis.
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sitei | 99 | May play a role in metal incorporation in vivoBy similarity | 1 | |
Metal bindingi | 100 | Iron; alternateBy similarity | 1 | |
Metal bindingi | 100 | Nickel; alternateBy similarity | 1 | |
Metal bindingi | 102 | Iron; alternateBy similarity | 1 | |
Metal bindingi | 102 | Nickel; alternateBy similarity | 1 | |
Sitei | 105 | May play a role in transmitting local conformational changesBy similarity | 1 | |
Metal bindingi | 106 | Iron; alternateBy similarity | 1 | |
Metal bindingi | 106 | Nickel; alternateBy similarity | 1 | |
Sitei | 108 | Important to generate the dianionBy similarity | 1 | |
Metal bindingi | 145 | Iron; alternateBy similarity | 1 | |
Metal bindingi | 145 | Nickel; alternateBy similarity | 1 |
GO - Molecular functioni
- acireductone dioxygenase (Ni2+-requiring) activity Source: UniProtKB-UniRule
- acireductone dioxygenase [iron(II)-requiring] activity Source: GO_Central
- iron ion binding Source: UniProtKB-UniRule
- nickel cation binding Source: UniProtKB-UniRule
GO - Biological processi
- L-methionine salvage from methylthioadenosine Source: UniProtKB-UniPathway
- L-methionine salvage from S-adenosylmethionine Source: UniProtKB-UniRule
- methionine metabolic process Source: GO_Central
Keywordsi
Molecular function | Dioxygenase, Oxidoreductase |
Biological process | Amino-acid biosynthesis, Methionine biosynthesis |
Ligand | Iron, Metal-binding, Nickel |
Enzyme and pathway databases
BioCyci | BSUB:BSU13620-MONOMER |
UniPathwayi | UPA00904;UER00878 |
Names & Taxonomyi
Protein namesi | Recommended name: Acireductone dioxygenaseAlternative name(s): 1,2-dihydroxy-3-keto-5-methylthiopentene dioxygenase Short name: DHK-MTPene dioxygenase |
Gene namesi | Name:mtnD Synonyms:ykrZ Ordered Locus Names:BSU13620 |
Organismi | Bacillus subtilis (strain 168) |
Taxonomic identifieri | 224308 [NCBI] |
Taxonomic lineagei | Bacteria › Firmicutes › Bacilli › Bacillales › Bacillaceae › Bacillus › |
Proteomesi |
|
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000162941 | 1 – 178 | Acireductone dioxygenaseAdd BLAST | 178 |
Proteomic databases
PaxDbi | O31669 |
PRIDEi | O31669 |
Interactioni
Subunit structurei
Monomer.
By similarityProtein-protein interaction databases
IntActi | O31669, 1 interactor |
MINTi | O31669 |
STRINGi | 224308.BSU13620 |
Family & Domainsi
Sequence similaritiesi
Belongs to the acireductone dioxygenase (ARD) family.Curated
Phylogenomic databases
eggNOGi | COG1791, Bacteria |
InParanoidi | O31669 |
OMAi | TTHWFDM |
PhylomeDBi | O31669 |
Family and domain databases
CDDi | cd02232, cupin_ARD, 1 hit |
Gene3Di | 2.60.120.10, 1 hit |
HAMAPi | MF_01682, Salvage_MtnD, 1 hit |
InterProi | View protein in InterPro IPR004313, ARD IPR023956, ARD_bac IPR014710, RmlC-like_jellyroll IPR011051, RmlC_Cupin_sf |
PANTHERi | PTHR23418, PTHR23418, 1 hit |
Pfami | View protein in Pfam PF03079, ARD, 1 hit |
SUPFAMi | SSF51182, SSF51182, 1 hit |
i Sequence
Sequence statusi: Complete.
O31669-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MATIRIHDEA NTTIENQEEV ASFLDSQEVI YEQWDITRLP EHLSEKYDLT
60 70 80 90 100
EEEKQQILDT FETEIKDIST RRGYKAQDVI SLSDSNPKLD ELLENFKREH
110 120 130 140 150
HHTDDEVRFI VSGHGIFVIQ GQDGTFFDVR LNPGDLISVP ENIRHYFTLQ
160 170
EDRKVVAVRI FVTTEGWVPI YEKDSVNQ
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AL009126 Genomic DNA Translation: CAB13235.1 |
PIRi | B69864 |
RefSeqi | NP_389245.1, NC_000964.3 WP_003244952.1, NZ_JNCM01000035.1 |
Genome annotation databases
EnsemblBacteriai | CAB13235; CAB13235; BSU_13620 |
GeneIDi | 939322 |
KEGGi | bsu:BSU13620 |
PATRICi | fig|224308.179.peg.1479 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AL009126 Genomic DNA Translation: CAB13235.1 |
PIRi | B69864 |
RefSeqi | NP_389245.1, NC_000964.3 WP_003244952.1, NZ_JNCM01000035.1 |
3D structure databases
SMRi | O31669 |
ModBasei | Search... |
Protein-protein interaction databases
IntActi | O31669, 1 interactor |
MINTi | O31669 |
STRINGi | 224308.BSU13620 |
Proteomic databases
PaxDbi | O31669 |
PRIDEi | O31669 |
Genome annotation databases
EnsemblBacteriai | CAB13235; CAB13235; BSU_13620 |
GeneIDi | 939322 |
KEGGi | bsu:BSU13620 |
PATRICi | fig|224308.179.peg.1479 |
Phylogenomic databases
eggNOGi | COG1791, Bacteria |
InParanoidi | O31669 |
OMAi | TTHWFDM |
PhylomeDBi | O31669 |
Enzyme and pathway databases
UniPathwayi | UPA00904;UER00878 |
BioCyci | BSUB:BSU13620-MONOMER |
Family and domain databases
CDDi | cd02232, cupin_ARD, 1 hit |
Gene3Di | 2.60.120.10, 1 hit |
HAMAPi | MF_01682, Salvage_MtnD, 1 hit |
InterProi | View protein in InterPro IPR004313, ARD IPR023956, ARD_bac IPR014710, RmlC-like_jellyroll IPR011051, RmlC_Cupin_sf |
PANTHERi | PTHR23418, PTHR23418, 1 hit |
Pfami | View protein in Pfam PF03079, ARD, 1 hit |
SUPFAMi | SSF51182, SSF51182, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | MTND_BACSU | |
Accessioni | O31669Primary (citable) accession number: O31669 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | January 16, 2004 |
Last sequence update: | January 1, 1998 | |
Last modified: | April 7, 2021 | |
This is version 123 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Prokaryotic 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