Ribose 5-phosphate
Chemical compound / From Wikipedia, the free encyclopedia
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Ribose 5-phosphate (R5P) is both a product and an intermediate of the pentose phosphate pathway. The last step of the oxidative reactions in the pentose phosphate pathway is the production of ribulose 5-phosphate. Depending on the body's state, ribulose 5-phosphate can reversibly isomerize to ribose 5-phosphate. Ribulose 5-phosphate can alternatively undergo a series of isomerizations as well as transaldolations and transketolations that result in the production of other pentose phosphates as well as fructose 6-phosphate and glyceraldehyde 3-phosphate (both intermediates in glycolysis).
Names | |
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IUPAC name
5-O-Phosphono-D-ribose | |
Other names
Ribose 5-phosphate | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider |
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ECHA InfoCard | 100.022.101 |
MeSH | ribose-5-phosphate |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C5H11O8P | |
Molar mass | 230.110 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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The enzyme ribose-phosphate diphosphokinase converts ribose-5-phosphate into phosphoribosyl pyrophosphate.