dihydroxy-acid dehydratase (2,3-dihydroxy-3-methylbutanoate, 2,3-dihydroxy-3-methylpentanoate)
function
biosynthesis of branched-chain amino acids
product
dihydroxy-acid dehydratase (2,3-dihydroxy-3-methylbutanoate, 2,3-dihydroxy-3-methylpentanoate)
Genomic Context
categories
[category|SW 2|Metabolism] → [category|SW 2.3|Amino acid/ nitrogen metabolism] → [category|SW 2.3.1|Biosynthesis/ acquisition of amino acids] → [category|SW 2.3.1.12|Biosynthesis/ acquisition of branched-chain amino acids]Gene
Coordinates
2,300,762 → 2,302,438
The protein
Catalyzed reaction/ biological activity
2,3-dihydroxy-3-methylbutanoate = 3-methyl-2-oxobutanoate + H2O (according to Swiss-Prot)Structure
[PDB|2GP4] (apo form of 6-phosphogluconate dehydratase from ''Shewanella oneidensis'', 33% identity)additional information
belongs to the 100 [SW|most abundant proteins] [PubMed|15378759]Expression and Regulation
Operons
genes
[gene|8D08E5F1EC57A9B3EFFCD7D12D8F16B3B28AEFF0|ilvD]
description
[Pubmed|15060025]
regulatory mechanism
[protein|90ACE0DECA58D3C1A55E135120F7A0C1C920571C|CodY]: repression, [pubmed|12618455] [pubmed|18083814], in [regulon|90ACE0DECA58D3C1A55E135120F7A0C1C920571C|CodY regulon]regulation
repressed by casamino acids [Pubmed|12107147]view in new tabBiological materials
Mutant
BKE21870 (Δ[gene|8D08E5F1EC57A9B3EFFCD7D12D8F16B3B28AEFF0|ilvD]::erm trpC2) available at [http://www.bgsc.org/getdetail.php?bgscid=BKE21870 BGSC], [Pubmed|28189581], upstream reverse: _UP1_CATGGTGATCCTCCTAAATT, downstream forward: _UP4_TAGATAGCTGGGGACACTTTBKK21870 (Δ[gene|8D08E5F1EC57A9B3EFFCD7D12D8F16B3B28AEFF0|ilvD]::kan trpC2) available at [http://www.bgsc.org/getdetail.php?bgscid=BKK21870 BGSC], [Pubmed|28189581], upstream reverse: _UP1_CATGGTGATCCTCCTAAATT, downstream forward: _UP4_TAGATAGCTGGGGACACTTTlacZ fusion
pGP522 (in [protein|search|pAC5]), pGP235 (in [protein|search|pAC5]), both available in [SW|Jörg Stülke]'s lab; a series of promoter deletions in [protein|search|pAC6] is available in [SW|Jörg Stülke]'s labReferences
18083814,12618455,15060025,12107147,24163341,15378759,26220295