UniProtKB - Q73B99 (LEU3_BACC1)
Protein
3-isopropylmalate dehydrogenase
Gene
leuB
Organism
Bacillus cereus (strain ATCC 10987 / NRS 248)
Status
Functioni
Catalyzes the oxidation of 3-carboxy-2-hydroxy-4-methylpentanoate (3-isopropylmalate) to 3-carboxy-4-methyl-2-oxopentanoate. The product decarboxylates to 4-methyl-2 oxopentanoate.UniRule annotation
Catalytic activityi
- EC:1.1.1.85UniRule annotation
Cofactori
Mg2+UniRule annotation, Mn2+UniRule annotationNote: Binds 1 Mg2+ or Mn2+ ion per subunit.UniRule annotation
: L-leucine biosynthesis Pathwayi
This protein is involved in step 3 of the subpathway that synthesizes L-leucine from 3-methyl-2-oxobutanoate.UniRule annotationProteins known to be involved in the 4 steps of the subpathway in this organism are:
- 2-isopropylmalate synthase (leuA)
- 3-isopropylmalate dehydratase small subunit (leuD), 3-isopropylmalate dehydratase large subunit (leuC)
- 3-isopropylmalate dehydrogenase (leuB)
- Branched-chain-amino-acid aminotransferase (ilvE), Branched-chain-amino-acid aminotransferase (ilvE)
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-leucine from 3-methyl-2-oxobutanoate, the pathway L-leucine biosynthesis and in Amino-acid biosynthesis.
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Binding sitei | 94 | SubstrateUniRule annotation | 1 | |
Binding sitei | 104 | SubstrateUniRule annotation | 1 | |
Binding sitei | 130 | SubstrateUniRule annotation | 1 | |
Sitei | 137 | Important for catalysisUniRule annotation | 1 | |
Sitei | 183 | Important for catalysisUniRule annotation | 1 | |
Metal bindingi | 215 | Magnesium or manganeseUniRule annotation | 1 | |
Binding sitei | 215 | SubstrateUniRule annotation | 1 | |
Metal bindingi | 239 | Magnesium or manganeseUniRule annotation | 1 | |
Metal bindingi | 243 | Magnesium or manganeseUniRule annotation | 1 |
Regions
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Nucleotide bindingi | 76 – 87 | NADUniRule annotationAdd BLAST | 12 | |
Nucleotide bindingi | 273 – 285 | NADUniRule annotationAdd BLAST | 13 |
GO - Molecular functioni
- 3-isopropylmalate dehydrogenase activity Source: UniProtKB-UniRule
- magnesium ion binding Source: InterPro
- NAD binding Source: InterPro
GO - Biological processi
- branched-chain amino acid biosynthetic process Source: UniProtKB-KW
- leucine biosynthetic process Source: UniProtKB-UniRule
Keywordsi
Molecular function | Oxidoreductase |
Biological process | Amino-acid biosynthesis, Branched-chain amino acid biosynthesis, Leucine biosynthesis |
Ligand | Magnesium, Manganese, Metal-binding, NAD |
Enzyme and pathway databases
BioCyci | BCER222523:G1G0J-1569-MONOMER |
UniPathwayi | UPA00048;UER00072 |
Names & Taxonomyi
Protein namesi | Recommended name: 3-isopropylmalate dehydrogenaseUniRule annotation (EC:1.1.1.85UniRule annotation)Alternative name(s): 3-IPM-DHUniRule annotation Beta-IPM dehydrogenaseUniRule annotation Short name: IMDHUniRule annotation |
Gene namesi | Name:leuBUniRule annotation Ordered Locus Names:BCE_1521 |
Organismi | Bacillus cereus (strain ATCC 10987 / NRS 248) |
Taxonomic identifieri | 222523 [NCBI] |
Taxonomic lineagei | Bacteria › Firmicutes › Bacilli › Bacillales › Bacillaceae › Bacillus › Bacillus cereus group › |
Proteomesi |
|
Subcellular locationi
Cytoplasm and Cytosol
- Cytoplasm UniRule annotation
Other locations
- cytoplasm Source: UniProtKB-SubCell
Keywords - Cellular componenti
CytoplasmPTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000083634 | 1 – 354 | 3-isopropylmalate dehydrogenaseAdd BLAST | 354 |
Proteomic databases
PRIDEi | Q73B99 |
Interactioni
Subunit structurei
Homodimer.
UniRule annotationFamily & Domainsi
Sequence similaritiesi
Belongs to the isocitrate and isopropylmalate dehydrogenases family. LeuB type 1 subfamily.UniRule annotation
Phylogenomic databases
HOGENOMi | CLU_031953_0_3_9 |
OMAi | EYDLGAR |
Family and domain databases
HAMAPi | MF_01033, LeuB_type1, 1 hit |
InterProi | View protein in InterPro IPR019818, IsoCit/isopropylmalate_DH_CS IPR024084, IsoPropMal-DH-like_dom IPR004429, Isopropylmalate_DH |
PANTHERi | PTHR42979, PTHR42979, 1 hit |
Pfami | View protein in Pfam PF00180, Iso_dh, 1 hit |
SMARTi | View protein in SMART SM01329, Iso_dh, 1 hit |
TIGRFAMsi | TIGR00169, leuB, 1 hit |
PROSITEi | View protein in PROSITE PS00470, IDH_IMDH, 1 hit |
i Sequence
Sequence statusi: Complete.
Q73B99-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MEKRIVCLAG DGVGPEVMES AKEVLHMVER LYGHHFHLQD EYFGGSAIDL
60 70 80 90 100
NGQPLPQRTL AACLASDAVL LGAVGGPRWD SAKERPEKGL LALRKGLGVF
110 120 130 140 150
ANVRPVTVES ATAHLSPLKK ADEIDFVVVR ELTGGIYFSY PKERTDEVAT
160 170 180 190 200
DTLTYHRHEI ERIVSYAFQL ASKRKKKVTS IDKANVLESS KLWRTVTEEV
210 220 230 240 250
ALRYPDVELE HILVDAAAME LIRNPGRFDV IVTENLFGDI LSDEASVLAG
260 270 280 290 300
SLGMLPSASH AEKGPSLYEP IHGSAPDIAG KNKANPIAMM RSVAMMLGQS
310 320 330 340 350
FGLTREGCAI EEAISAVLKL GKCTADIGGT ETTTSFTKAV MQEMEEQALV
GRGR
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AE017194 Genomic DNA Translation: AAS40450.1 |
RefSeqi | WP_000415369.1, NC_003909.8 |
Genome annotation databases
EnsemblBacteriai | AAS40450; AAS40450; BCE_1521 |
GeneIDi | 59158313 |
KEGGi | bca:BCE_1521 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AE017194 Genomic DNA Translation: AAS40450.1 |
RefSeqi | WP_000415369.1, NC_003909.8 |
3D structure databases
SMRi | Q73B99 |
ModBasei | Search... |
Proteomic databases
PRIDEi | Q73B99 |
Genome annotation databases
EnsemblBacteriai | AAS40450; AAS40450; BCE_1521 |
GeneIDi | 59158313 |
KEGGi | bca:BCE_1521 |
Phylogenomic databases
HOGENOMi | CLU_031953_0_3_9 |
OMAi | EYDLGAR |
Enzyme and pathway databases
UniPathwayi | UPA00048;UER00072 |
BioCyci | BCER222523:G1G0J-1569-MONOMER |
Family and domain databases
HAMAPi | MF_01033, LeuB_type1, 1 hit |
InterProi | View protein in InterPro IPR019818, IsoCit/isopropylmalate_DH_CS IPR024084, IsoPropMal-DH-like_dom IPR004429, Isopropylmalate_DH |
PANTHERi | PTHR42979, PTHR42979, 1 hit |
Pfami | View protein in Pfam PF00180, Iso_dh, 1 hit |
SMARTi | View protein in SMART SM01329, Iso_dh, 1 hit |
TIGRFAMsi | TIGR00169, leuB, 1 hit |
PROSITEi | View protein in PROSITE PS00470, IDH_IMDH, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | LEU3_BACC1 | |
Accessioni | Q73B99Primary (citable) accession number: Q73B99 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | January 10, 2006 |
Last sequence update: | July 5, 2004 | |
Last modified: | April 7, 2021 | |
This is version 104 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
Documents
- PATHWAY comments
Index of metabolic and biosynthesis pathways - SIMILARITY comments
Index of protein domains and families