B5FJW9 · XGPT_SALDC

Function

function

Purine salvage pathway enzyme that catalyzes the transfer of the ribosyl-5-phosphate group from 5-phospho-alpha-D-ribose 1-diphosphate (PRPP) to the N9 position of the 6-oxopurines guanine and xanthine to form the corresponding ribonucleotides GMP (guanosine 5'-monophosphate) and XMP (xanthosine 5'-monophosphate), with the release of PPi. To a lesser extent, also acts on hypoxanthine.

Catalytic activity

Cofactor

Mg2+ (UniProtKB | Rhea| CHEBI:18420 )

Pathway

Purine metabolism; GMP biosynthesis via salvage pathway; GMP from guanine: step 1/1.
Purine metabolism; XMP biosynthesis via salvage pathway; XMP from xanthine: step 1/1.

Features

Showing features for binding site.

TypeIDPosition(s)Description
Binding site37-385-phospho-alpha-D-ribose 1-diphosphate (UniProtKB | ChEBI)
Binding site695-phospho-alpha-D-ribose 1-diphosphate (UniProtKB | ChEBI)
Binding site69GMP (UniProtKB | ChEBI)
Binding site88-965-phospho-alpha-D-ribose 1-diphosphate (UniProtKB | ChEBI)
Binding site89Mg2+ (UniProtKB | ChEBI)
Binding site92guanine (UniProtKB | ChEBI)
Binding site92xanthine (UniProtKB | ChEBI)
Binding site92-96GMP (UniProtKB | ChEBI)
Binding site134-135GMP (UniProtKB | ChEBI)
Binding site135guanine (UniProtKB | ChEBI)
Binding site135xanthine (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentcytosol
Cellular Componentplasma membrane
Molecular Functionguanine phosphoribosyltransferase activity
Molecular Functionhypoxanthine phosphoribosyltransferase activity
Molecular Functionmagnesium ion binding
Molecular Functionxanthine phosphoribosyltransferase activity
Biological ProcessGMP salvage
Biological ProcessIMP salvage
Biological Processpurine ribonucleoside salvage
Biological ProcessXMP salvage

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Xanthine-guanine phosphoribosyltransferase
  • EC number
  • Short names
    XGPRT
  • Alternative names
    • Xanthine phosphoribosyltransferase

Gene names

    • Name
      gpt
    • Ordered locus names
      SeD_A0347

Organism names

Accessions

  • Primary accession
    B5FJW9

Proteomes

Subcellular Location

Cell inner membrane
; Peripheral membrane protein

Keywords

PTM/Processing

Features

Showing features for chain.

TypeIDPosition(s)Description
ChainPRO_10001887531-152Xanthine-guanine phosphoribosyltransferase

Interaction

Subunit

Homotetramer.

Structure

Family & Domains

Sequence similarities

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    152
  • Mass (Da)
    16,970
  • Last updated
    2008-10-14 v1
  • Checksum
    EE42974303E6900D
MSEKYVVTWDMLQIHARKLASRLMPSEQWKGIIAVSRGGLVPGALLARELGIRHVDTVCISSYDHDNQRELKVLKRAEGDGEGFIVIDDLVDTGGTAVAIREMYPKAHFVTIFAKPAGRPLVDDYVIDIPQNTWIEQPWDMGVVFVPPISGR

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
CP001144
EMBL· GenBank· DDBJ
ACH77185.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

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