Dihydropyrimidine dehydrogenase (NADP+)

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dihydropyrimidine dehydrogenase (NADP+)
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Dihydroprymidine dehydrogenase dimer, Sus scrofa
Identifiers
EC no.1.3.1.2
CAS no.Template:CAS
Alt. namesDihydrothymine dehydrogenase
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
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Search
PMCarticles
PubMedarticles
NCBIproteins

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In enzymology, dihydropyrimidine dehydrogenase (NADP+) (EC 1.3.1.2) is an enzyme that catalyzes the chemical reaction

Template:Chemrxn

In the catabolism of uracil, the enzyme converts uracil to dihydrouracil using nicotinamide adenine dinucleotide phosphate (NADPH) as its cofactor. It can also act on thymine to give dihydrothymine.[1][2]

In humans the enzyme is encoded by the DPYD gene.[3][4] It is the initial and rate-limiting step in pyrimidine catabolism.[citation needed] It is also involved in the degradation of the chemotherapeutic drugs 5-fluorouracil and tegafur.[5] It participates in beta-alanine metabolism and pantothenate and coa biosynthesis.

Terminology

The systematic name of this enzyme class is 5,6-dihydrouracil:NADP+ 5-oxidoreductase.
Other names in common use include:

  • dihydrothymine dehydrogenase
  • dihydrouracil dehydrogenase (NADP+)
  • 4,5-dihydrothymine: oxidoreductase
  • DPD
  • DHPDH
  • dehydrogenase, dihydrouracil (nicotinamide adenine dinucleotide, phosphate)
  • DHU dehydrogenase
  • hydropyrimidine dehydrogenase
  • dihydropyrimidine dehydrogenase (NADP+)

Structural studies

As of late 2007, 5 structures have been solved for this class of enzymes, with PDB accession codes 1GT8, 1GTE, 1GTH, 1H7W, and 1H7X.

Function

The protein is a pyrimidine catabolic enzyme and the initial and rate-limiting factor in the pathway of uracil and thymidine catabolism. Genetic deficiency of this enzyme results in an error in pyrimidine metabolism associated with thymine-uraciluria and an increased risk of toxicity in cancer patients receiving 5-fluorouracil chemotherapy.[4]

Interactive pathway map

Click on genes, proteins and metabolites below to link to respective articles.[§ 1]

[[File:
FluoropyrimidineActivity_WP1601go to articlego to articlego to articlego to pathway articlego to pathway articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to PubChem Compoundgo to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to pathway articlego to pathway articlego to articlego to articlego to articlego to articlego to articlego to WikiPathwaysgo to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to article
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FluoropyrimidineActivity_WP1601go to articlego to articlego to articlego to pathway articlego to pathway articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to PubChem Compoundgo to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to pathway articlego to pathway articlego to articlego to articlego to articlego to articlego to articlego to WikiPathwaysgo to articlego to articlego to articlego to articlego to articlego to articlego to articlego to articlego to article
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Fluorouracil (5-FU) Activity edit
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  1. ^ The interactive pathway map can be edited at WikiPathways: Page Module:Citation/CS1/styles.css has no content."FluoropyrimidineActivity_WP1601".

See also

References

  1. ^ Enzyme 1.3.1.2 at KEGG Pathway Database.
  2. ^ Page Module:Citation/CS1/styles.css has no content.Chung T, Na J, Kim YI, Chang DY, Kim YI, Kim H, Moon HE, Kang KW, Lee DS, Chung JK, Kim SS, Suh-Kim H, Paek SH, Youn H (2016). "Dihydropyrimidine Dehydrogenase Is a Prognostic Marker for Mesenchymal Stem Cell-Mediated Cytosine Deaminase Gene and 5-Fluorocytosine Prodrug Therapy for the Treatment of Recurrent Gliomas". Theranostics. 6 (10): 1477–90. doi:10.7150/thno.14158. PMC 4955049. PMID 27446484.
  3. ^ Page Module:Citation/CS1/styles.css has no content.Takai S, Fernandez-Salguero P, Kimura S, Gonzalez FJ, Yamada K (December 1994). "Assignment of the human dihydropyrimidine dehydrogenase gene (DPYD) to chromosome region 1p22 by fluorescence in situ hybridization". Genomics. 24 (3): 613–4. doi:10.1006/geno.1994.1680. PMID 7713523.
  4. ^ a b Page Module:Citation/CS1/styles.css has no content."Entrez Gene: DPYD dihydropyrimidine dehydrogenase".
  5. ^ Page Module:Citation/CS1/styles.css has no content.Caudle KE, Thorn CF, Klein TE, Swen JJ, McLeod HL, Diasio RB, Schwab M (December 2013). "Clinical Pharmacogenetics Implementation Consortium guidelines for dihydropyrimidine dehydrogenase genotype and fluoropyrimidine dosing". Clinical Pharmacology and Therapeutics. 94 (6): 640–5. doi:10.1038/clpt.2013.172. PMC 3831181. PMID 23988873.

Further reading

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