P57656 · ILVD_BUCAI

Function

function

Functions in the biosynthesis of branched-chain amino acids. Catalyzes the dehydration of (2R,3R)-2,3-dihydroxy-3-methylpentanoate (2,3-dihydroxy-3-methylvalerate) into 2-oxo-3-methylpentanoate (2-oxo-3-methylvalerate) and of (2R)-2,3-dihydroxy-3-methylbutanoate (2,3-dihydroxyisovalerate) into 2-oxo-3-methylbutanoate (2-oxoisovalerate), the penultimate precursor to L-isoleucine and L-valine, respectively.

Catalytic activity

Cofactor

Protein has several cofactor binding sites:
[2Fe-2S] cluster (UniProtKB | Rhea| CHEBI:190135 )

Note: Binds 1 [2Fe-2S] cluster per subunit. This cluster acts as a Lewis acid cofactor.
Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Pathway

Amino-acid biosynthesis; L-isoleucine biosynthesis; L-isoleucine from 2-oxobutanoate: step 3/4.
Amino-acid biosynthesis; L-valine biosynthesis; L-valine from pyruvate: step 3/4.

Features

Showing features for binding site, active site.

TypeIDPosition(s)Description
Binding site81Mg2+ (UniProtKB | ChEBI)
Binding site122[2Fe-2S] cluster (UniProtKB | ChEBI)
Binding site123Mg2+ (UniProtKB | ChEBI)
Binding site124Mg2+ (UniProtKB | ChEBI); via carbamate group
Binding site195[2Fe-2S] cluster (UniProtKB | ChEBI)
Binding site491Mg2+ (UniProtKB | ChEBI)
Active site517Proton acceptor

GO annotations

AspectTerm
Cellular Componentcytosol
Molecular Function2 iron, 2 sulfur cluster binding
Molecular Functiondihydroxy-acid dehydratase activity
Molecular Functionmagnesium ion binding
Biological Processisoleucine biosynthetic process
Biological Processvaline biosynthetic process

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Dihydroxy-acid dehydratase
  • EC number
  • Short names
    DAD

Gene names

    • Name
      ilvD
    • Ordered locus names
      BU600

Organism names

Accessions

  • Primary accession
    P57656

Proteomes

Subcellular Location

PTM/Processing

Features

Showing features for chain, modified residue.

TypeIDPosition(s)Description
ChainPRO_00001034461-617Dihydroxy-acid dehydratase
Modified residue124N6-carboxylysine

Interaction

Subunit

Homodimer.

Protein-protein interaction databases

Structure

Family & Domains

Sequence similarities

Belongs to the IlvD/Edd family.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    617
  • Mass (Da)
    67,356
  • Last updated
    2000-12-01 v1
  • Checksum
    CF73637CC71365FB
MPKYRSFTTTQGRNMSGARSLWRATGMTEKDFTKPIIAVVNSFSQFVPGHIHLQEVGKLICGEIQKSGGVAKEFNTIAIDDGIAMGHSGMLYSLPSRELIADSIEYVVNAHCADAMICISNCDKITPGMLMASLRLNIPSVFISGGPMEAGKIQKNNKTIKIDLVDAIINGGKSHISDDFIKDIEASACPTCGSCSGMFTANSMNCLTEAIGLALPGNGTLLATHIDRKNLFIKSAQIIVKITEDYYKKNNTNVLPRNIANKESFENAMMLDIAMGGSTNTILHLLAAAQEAKVDFKMSNINKLSKKIPHICKVAPSTSLYHVEDVHRAGGVMGILGELNRFNLLHKNTRNILQLNLEETLDEYDIFSTNNPDVINMFQAGPGGIRTTKAYSQNFRWTRLDYDRKNGCIRSCKHAYSQDGGLAILYGNLAKNGCIIKTAGIDAKNYIFSGVAKVYESQEEAASSILNGEIISGDIIVIRYEGPKGGPGMQEMLYPTTYLKSMNLDKTCALITDGRFSGGTSGISIGHISPEAANKGIIALVKNGDIININIPERTIHLNITEKELSHRILQEESKGPLSYKPHSRKRYISSALKAYAFFSTSADQGAVRDYKKISNI

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
BA000003
EMBL· GenBank· DDBJ
BAB13285.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

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