A2FTQ2 · A2FTQ2_TRIV3

Function

function

Catalyzes the phosphorylation of ribose at O-5 in a reaction requiring ATP and magnesium. The resulting D-ribose-5-phosphate can then be used either for sythesis of nucleotides, histidine, and tryptophan, or as a component of the pentose phosphate pathway.

Caution

Lacks conserved residue(s) required for the propagation of feature annotation.

Catalytic activity

Cofactor

Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Note: Requires a divalent cation, most likely magnesium in vivo, as an electrophilic catalyst to aid phosphoryl group transfer. It is the chelate of the metal and the nucleotide that is the actual substrate.

Activity regulation

Activated by a monovalent cation that binds near, but not in, the active site. The most likely occupant of the site in vivo is potassium. Ion binding induces a conformational change that may alter substrate affinity.

Pathway

Carbohydrate metabolism; D-ribose degradation; D-ribose 5-phosphate from beta-D-ribopyranose: step 2/2.

Features

Showing features for binding site, active site.

TypeIDPosition(s)Description
Binding site10-12substrate
Binding site38-42substrate
Binding site139substrate
Binding site184ATP (UniProtKB | ChEBI)
Binding site208-213ATP (UniProtKB | ChEBI)
Binding site235K+ (UniProtKB | ChEBI)
Binding site237K+ (UniProtKB | ChEBI)
Binding site240-241ATP (UniProtKB | ChEBI)
Active site241Proton acceptor
Binding site241substrate
Binding site271K+ (UniProtKB | ChEBI)
Binding site274K+ (UniProtKB | ChEBI)
Binding site276K+ (UniProtKB | ChEBI)
Binding site280K+ (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentcytoplasm
Cellular Componentnucleus
Molecular FunctionATP binding
Molecular Functionmetal ion binding
Molecular Functionribokinase activity
Biological ProcessD-ribose catabolic process

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Ribokinase
  • EC number
  • Short names
    RK

Gene names

    • ORF names
      TVAG_384480

Organism names

Accessions

  • Primary accession
    A2FTQ2

Proteomes

Organism-specific databases

Subcellular Location

Keywords

Interaction

Subunit

Homodimer.

Protein-protein interaction databases

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain5-280Carbohydrate kinase PfkB

Sequence similarities

Belongs to the carbohydrate kinase PfkB family. Ribokinase subfamily.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    295
  • Mass (Da)
    31,523
  • Last updated
    2007-02-20 v1
  • Checksum
    61710F534523E267
METTFVGICNMDLISQCHRLPNLGETIHGISLGHGFGGKAPNACAQFAFLSDENHKPNLLTSVGDDSDGKVCINHFKEIGISTDFVQVVKEIPTGCAICFVLDGGESAIIIHPNPVTIDMVHKMSEKLSHSKYVVTNFEIPVETALEVLKISRQGGAKTILNVSPLPEKKDINLFKDASIVILNEHELATFGKVEDFFEVGVEAVVCTKGPEGASVYEKGKPTVSVPSPKVKAVDTTGAGDSFLGAFSYCLSKGCSYEDAARIACVCASISVTALGAQGSYAHRDHKQLKDILPK

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
DS114015
EMBL· GenBank· DDBJ
EAX91724.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
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