Q5WBT4 · Q5WBT4_SHOC1

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 site9-11substrate
Binding site37-41substrate
Binding site137substrate
Binding site181ATP (UniProtKB | ChEBI)
Binding site207-212ATP (UniProtKB | ChEBI)
Binding site233K+ (UniProtKB | ChEBI)
Binding site235K+ (UniProtKB | ChEBI)
Binding site238-239ATP (UniProtKB | ChEBI)
Active site239Proton acceptor
Binding site239substrate
Binding site263ATP (UniProtKB | ChEBI)
Binding site269K+ (UniProtKB | ChEBI)
Binding site272K+ (UniProtKB | ChEBI)
Binding site274K+ (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentcytoplasm
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

    • Name
      rbsK
    • Ordered locus names
      ABC3643

Organism names

Accessions

  • Primary accession
    Q5WBT4

Proteomes

Subcellular Location

Keywords

Interaction

Subunit

Homodimer.

Protein-protein interaction databases

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain2-281Carbohydrate kinase PfkB

Sequence similarities

Belongs to the carbohydrate kinase PfkB family. Ribokinase subfamily.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    292
  • Mass (Da)
    30,712
  • Last updated
    2004-11-23 v1
  • Checksum
    2C5EB312D7C06375
MITVVGSINIDLVVHTGTMPVLGETVLGGEFQTNPGGKGANQAVAAARLGADVTMIGKVGNDPYGKLVTDNLQNEQINTDYIEVEKDGHTGVAMITVTNNDNAIVVAPGANFSWKPEEAAQYRDVFKQTNVLVLQLEVPLPFIEEIAKIGKEERCIVILNPAPAQPLPSSLLDLVDYITPNETECQTIFKQSVEQAVQRYPNKLLVTEGKKGAAYHDGQQLVQVNGFPANVVDTTGAGDTFNGALAAALASGQQLAEAVTFANAAASLSVEQAGAQAGMPSKQQVLARLGSS

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AP006627
EMBL· GenBank· DDBJ
BAD66176.1
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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