Q8G7X1 · THIEC_BIFLO

Function

function

Condenses 4-methyl-5-(beta-hydroxyethyl)thiazole monophosphate (THZ-P) and 2-methyl-4-amino-5-hydroxymethyl pyrimidine pyrophosphate (HMP-PP) to form thiamine monophosphate (TMP).
Catalyzes the synthesis of the hydroxymethylpyrimidine phosphate (HMP-P) moiety of thiamine from aminoimidazole ribotide (AIR) in a radical S-adenosyl-L-methionine (SAM)-dependent reaction.

Catalytic activity

Cofactor

[4Fe-4S] cluster (UniProtKB | Rhea| CHEBI:49883 )

Note: Binds 1 [4Fe-4S] cluster per subunit. The cluster is coordinated with 3 cysteines and an exchangeable S-adenosyl-L-methionine.

Pathway

Cofactor biosynthesis; thiamine diphosphate biosynthesis; thiamine phosphate from 4-amino-2-methyl-5-diphosphomethylpyrimidine and 4-methyl-5-(2-phosphoethyl)-thiazole: step 1/1.

Features

Showing features for binding site.

TypeIDPosition(s)Description
Binding site48-524-amino-2-methyl-5-(diphosphooxymethyl)pyrimidine (UniProtKB | ChEBI)
Binding site844-amino-2-methyl-5-(diphosphooxymethyl)pyrimidine (UniProtKB | ChEBI)
Binding site85Mg2+ (UniProtKB | ChEBI)
Binding site109Mg2+ (UniProtKB | ChEBI)
Binding site1284-amino-2-methyl-5-(diphosphooxymethyl)pyrimidine (UniProtKB | ChEBI)
Binding site157-1592-[(2R,5Z)-2-carboxy-4-methylthiazol-5(2H)-ylidene]ethyl phosphate (UniProtKB | ChEBI)
Binding site1604-amino-2-methyl-5-(diphosphooxymethyl)pyrimidine (UniProtKB | ChEBI)
Binding site1962-[(2R,5Z)-2-carboxy-4-methylthiazol-5(2H)-ylidene]ethyl phosphate (UniProtKB | ChEBI)
Binding site216-2172-[(2R,5Z)-2-carboxy-4-methylthiazol-5(2H)-ylidene]ethyl phosphate (UniProtKB | ChEBI)
Binding site4875-amino-1-(5-phospho-beta-D-ribosyl)imidazole (UniProtKB | ChEBI)
Binding site5165-amino-1-(5-phospho-beta-D-ribosyl)imidazole (UniProtKB | ChEBI)
Binding site5455-amino-1-(5-phospho-beta-D-ribosyl)imidazole (UniProtKB | ChEBI)
Binding site5815-amino-1-(5-phospho-beta-D-ribosyl)imidazole (UniProtKB | ChEBI)
Binding site601-6035-amino-1-(5-phospho-beta-D-ribosyl)imidazole (UniProtKB | ChEBI)
Binding site642-6455-amino-1-(5-phospho-beta-D-ribosyl)imidazole (UniProtKB | ChEBI)
Binding site6815-amino-1-(5-phospho-beta-D-ribosyl)imidazole (UniProtKB | ChEBI)
Binding site685Zn2+ (UniProtKB | ChEBI)
Binding site7085-amino-1-(5-phospho-beta-D-ribosyl)imidazole (UniProtKB | ChEBI)
Binding site749Zn2+ (UniProtKB | ChEBI)
Binding site829[4Fe-4S] cluster (UniProtKB | ChEBI); 4Fe-4S-S-AdoMet
Binding site832[4Fe-4S] cluster (UniProtKB | ChEBI); 4Fe-4S-S-AdoMet
Binding site837[4Fe-4S] cluster (UniProtKB | ChEBI); 4Fe-4S-S-AdoMet

GO annotations

AspectTerm
Cellular Componentcytosol
Molecular Function4 iron, 4 sulfur cluster binding
Molecular Functioncarbon-carbon lyase activity
Molecular Functionmagnesium ion binding
Molecular Functionthiamine-phosphate diphosphorylase activity
Molecular Functionzinc ion binding
Biological Processthiamine biosynthetic process
Biological Processthiamine diphosphate biosynthetic process

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Thiamine biosynthesis bifunctional protein ThiEC

Including 2 domains:

  • Recommended name
    Thiamine-phosphate synthase
  • EC number
  • Short names
    TMP-PPase; TP synthase; TPS
  • Alternative names
    • Thiamine-phosphate pyrophosphorylase (TMP pyrophosphorylase)
  • Recommended name
    Phosphomethylpyrimidine synthase
  • EC number
  • Alternative names
    • Hydroxymethylpyrimidine phosphate synthase (HMP-P synthase; HMP-phosphate synthase; HMPP synthase)
    • Thiamine biosynthesis protein ThiC

Gene names

    • Name
      thiE/thiC
    • Ordered locus names
      BL0114

Organism names

Accessions

  • Primary accession
    Q8G7X1

Proteomes

Subcellular Location

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_00001528561-917Thiamine biosynthesis bifunctional protein ThiEC

Interaction

Protein-protein interaction databases

Structure

Family & Domains

Features

Showing features for region, compositional bias.

TypeIDPosition(s)Description
Region1-243Thiamine-phosphate synthase
Region256-311Disordered
Region271-917Phosphomethylpyrimidine synthase
Compositional bias276-293Basic and acidic residues

Sequence similarities

In the N-terminal section; belongs to the thiamine-phosphate synthase family.
In the C-terminal section; belongs to the ThiC family.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    917
  • Mass (Da)
    100,355
  • Last updated
    2003-03-01 v1
  • Checksum
    00000DA28A98E1F6
MSNEYPYASMRDSFDLSAYFVVGPEDCKGRPLTDVVDQALHGGATFIQLRAKEADASELTDMARDIAQIIEDNEKSDSVAFVIDDRADVVWQARRKGIKVDGVHIGQTDMEPREARALLGDEAIVGLSAETESLVRLINELPDGCIDYIGAGPLHVSTTKPEASVGGNDGSGKTLDAAQINTICVASEFPVVVGGGVTAADMAMLADTKAAGWFVVSAIAGAENPEEAARTMVEGWKAVRGDKKHGYAPRVVTHTPATDTQAAQEGAAKPGSEATEKKFTNAKDAKDAQKLAKQQRVDIAARGSKQRDKAHIRKTKSVPFTYQYGSYDLEVPYTEIKLSDTPGVGPNPPFHDYNTEGPKCDPKEGLKPLRLDWIRDRGDIEDYEGRRRNLEDDGKRAIKRGRATKEWRGRKHEPMRAKDHPITQMWYARHGIITPEMQYVATRENCDVELVRSELAAGRAVMPCNINHPEAEPMIIGSAFLTKLNANMGNSAVTSSIDEEVEKLTWATKWGADTVMDLSTGNDIHTTREWILRNSPVPIGTVPMYQALEKVEDDASKLSWELFRDTVIEQCEQGVDYMTIHAGVLLRYVPLTANRVTGIVSRGGSIMADWCLRHHQESFLYTHFDELCDIFAKYDVAFSLGDGLRPGSLADANDAAQLSELMTLGELTERAWAKDVQVMIEGPGHVPFDTVRMNIELEKAVCHNAPFYTLGPLTTDTAPGYDHITSAIGATEIGRYGTAMLCYVTPKEHLGLPNKDDVKQGVIAYKIACHAADIAKHHPHAMDRDNAISKARFEFRWLDQFNLSYDPDTAIAFHDDTLPAEPAKMAHFCSMCGPKFCSMAISQNIRKAFGGEAAQQQIVKEAAAGIDSEALATAKANVDNGVVSANVLSPEEILAGMDAMSEKYTAQGGKLYSTAQE

Features

Showing features for compositional bias.

TypeIDPosition(s)Description
Compositional bias276-293Basic and acidic residues

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AE014295
EMBL· GenBank· DDBJ
AAN23979.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

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