Related Experiment Video
Updated: Mar 9, 2026
10:34
Preparation of Quality Inositol Pyrophosphates
Published on: September 3, 2011
13.7K
Phosphoribosyl Diphosphate (PRPP): Biosynthesis, Enzymology, Utilization, and Metabolic Significance
Bjarne Hove-Jensen1,2, Kasper R Andersen2, Mogens Kilstrup3
1DTU Systems Biology, Technical University of Denmark, Kongens Lyngby, Denmark hove@mbg.au.dk.
Microbiology and Molecular Biology Reviews : MMBR
|December 30, 2016
Summary
Phosphoribosyl diphosphate (PRPP) is a vital metabolic intermediate synthesized by PRPP synthase. Its diverse roles in biosynthesis and regulation highlight its central importance in cellular physiology across all life forms.
Area of Science:
- Biochemistry
- Molecular Biology
- Enzymology
Background:
- Phosphoribosyl diphosphate (PRPP) is a crucial intermediate in cellular metabolism.
- It is synthesized by PRPP synthase and involved in numerous biosynthetic pathways.
Purpose of the Study:
- To review the metabolic pathways involving PRPP.
- To unify classical mechanistic studies with recent molecular enzymology and structural data of PRPP synthases.
- To explore the evolutionary origins and regulatory roles of PRPP.
Main Methods:
- Classical mechanistic procedures for studying PRPP synthase.
- Molecular enzymology and determination of 3D structures of PRPP synthases.
- Phylogenetic analysis and genetic studies of PRPP synthase genes.
Main Results:
- PRPP participates in the biosynthesis of nucleotides, amino acids, cofactors, and antibiotics.
- PRPP synthases from eubacteria, archaea, and humans share conserved structures and catalytic mechanisms.
- PRPP acts as a metabolic effector, regulating nucleotide biosynthesis through regulatory proteins and allosteric activation.
Conclusions:
- PRPP is a versatile intermediate with essential roles in cellular physiology.
- PRPP synthases evolved from phosphoribosyltransferases.
- Understanding PRPP metabolism and its synthases is crucial for comprehending cellular function and potential therapeutic targets.
Related Concept Videos
01:28Biosynthesis of Nucleic Acids
1.4K
Nucleic acid biosynthesis is a fundamental biochemical process that produces the purine and pyrimidine nucleotides essential for DNA and RNA synthesis. This pathway maintains a balanced nucleotide pool, preventing imbalances that could jeopardize genetic integrity and cellular function. Given the crucial role of nucleotides, their synthesis is tightly regulated to ensure proper cellular homeostasis.Purine BiosynthesisThe biosynthesis of purine nucleotides begins with ribose-5-phosphate, a...
1.4K
01:24Other Glycolytic Pathways
1.1K
The pentose phosphate pathway (PPP) operates in parallel with glycolysis, facilitating the metabolism of both pentoses and glucose. This pathway consists of two distinct phases: the oxidative and non-oxidative phases. While it does not directly generate ATP, the intermediates formed during the process can integrate into glycolysis, contributing to cellular energy metabolism when required.Oxidative Phase: NADPH ProductionThe oxidative phase of the pentose phosphate pathway is primarily...
1.1K
01:26Biosynthesis of Polysaccharides
822
Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
822
01:29Amino Acid Biosynthetic Pathways
1.5K
Amino acid biosynthesis is essential for cell growth, protein synthesis, and metabolic regulation. Cells generate essential and non-essential amino acids from metabolic intermediates to sustain vital biological functions. These intermediates originate from key metabolic pathways: glycolysis, the tricarboxylic acid (TCA) cycle, and the pentose phosphate pathway. Important precursors include α-ketoglutarate, pyruvate, oxaloacetate, phosphoenolpyruvate, and erythrose-4-phosphate, which...
1.5K
01:02Phosphorylation
55.1K
The addition or removal of phosphate groups from proteins is the most common chemical modification that regulates cellular processes. These modifications can affect the structure, activity, stability, and localization of proteins within cells as well as their interactions with other proteins.
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
During phosphorylation, protein kinases transfer the terminal phosphate group of ATP to specific amino acid side chains of substrate proteins. Serine, threonine, and tyrosine are the most commonly...
55.1K
01:24Biosynthesis in Bacteria
892
Biosynthesis in bacteria is a fundamental anabolic process that generates essential macromolecules, including proteins, nucleic acids, lipids, and polysaccharides. These macromolecules are critical for cellular growth, replication, and function. The process is tightly regulated and energetically linked to catabolic pathways to ensure optimal resource utilization.Biosynthetic pathways begin with precursor metabolites such as pyruvate, acetyl-CoA, and glucose-6-phosphate derived from glycolysis,...
892