Function and Biology

Crystal structure of human PRS1 E43T mutant

Source organism: Homo sapiens
Biochemical function: metal ion binding
Biological process: organophosphate biosynthetic process
Cellular component: cytosol

EC 2.7.6.1: Ribose-phosphate diphosphokinase

Reaction catalysed:
ATP + D-ribose 5-phosphate = AMP + 5-phospho-alpha-D-ribose 1-diphosphate
Systematic name:
ATP:D-ribose-5-phosphate diphosphotransferase
Alternative Name(s):
  • 5-phosphoribose pyrophosphorylase
  • 5-phosphoribosyl-1-pyrophosphate synthetase
  • 5-phosphoribosyl-alpha-1-pyrophosphate synthetase
  • PP-ribose P synthetase
  • PPRibP synthetase
  • PRPP synthetase
  • Phosphoribosyl diphosphate synthetase
  • Phosphoribosyl pyrophosphate synthetase
  • Phosphoribosyl-diphosphate synthetase
  • Phosphoribosylpyrophosphate synthase
  • Phosphoribosylpyrophosphate synthetase
  • Pyrophosphoribosylphosphate synthetase
  • Ribophosphate pyrophosphokinase
  • Ribose-5-phosphate pyrophosphokinase
  • Ribose-phosphate pyrophosphokinase

Sequence families

Pfam Protein families (Pfam)
PF14572
Domain description: Phosphoribosyl synthetase-associated domain
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1
The deposited structure of PDB entry 4lyg contains 2 copies of Pfam domain PF14572 (Phosphoribosyl synthetase-associated domain) in Ribose-phosphate pyrophosphokinase 1. Showing 1 copy in chain B.

PF13793
Domain description: N-terminal domain of ribose phosphate pyrophosphokinase
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1
The deposited structure of PDB entry 4lyg contains 2 copies of Pfam domain PF13793 (N-terminal domain of ribose phosphate pyrophosphokinase) in Ribose-phosphate pyrophosphokinase 1. Showing 1 copy in chain B.

InterPro InterPro annotations
IPR029057
Domain description: Phosphoribosyltransferase-like
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1
IPR005946
Domain description: Ribose-phosphate pyrophosphokinase
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1
IPR000836
Domain description: Phosphoribosyltransferase domain
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1
IPR000842
Domain description: Phosphoribosyl pyrophosphate synthetase, conserved site
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1
IPR037515
Domain description: Ribose-phosphate pyrophosphokinase, bacterial-type
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1
IPR029099
Domain description: Ribose-phosphate pyrophosphokinase, N-terminal domain
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1

Structure domain

CATH CATH domain
3.40.50.2020
Class: Alpha Beta
Architecture: 3-Layer(aba) Sandwich
Topology: Rossmann fold
Homology: Rossmann fold
Occurring in:
  1. Ribose-phosphate pyrophosphokinase 1
The deposited structure of PDB entry 4lyg contains 4 copies of CATH domain 3.40.50.2020 (Rossmann fold) in Ribose-phosphate pyrophosphokinase 1. Showing 2 copies in chain B.