Loading Pathway...
Error: Pathway image not found.
Hide
Pathway Description
Pyrimidine Deoxyribonucleosides Degradation
Escherichia coli (strain B / REL606)
Category:
Metabolite Pathway
Sub-Category:
Metabolic
Created: 2025-02-21
Last Updated: 2025-08-23
The degradation of deoxycytidine starts with deoxycytidine being introduced into the cytosol through either a nupG or nupC symporter.
Once inside, it can can be degrade through water,a hydrogen ion and a deoxycytidien deaminsa resultin in the release of a ammonium and a a deoxyuridine. The deoxyuridine is then degraded through a uracil phosphorylase resulting in the release of a deoxyribose 1-phosphate and a uracil.
The degradation of thymidine starts with thymidine being introduced into the cytosol through either a nupG or nupC symporter.
Thymidine is then degrades through a phosphorylase resulting in the release of a thymine and a deoxyribose 1-phosphate.
References
Pyrimidine Deoxyribonucleosides Degradation References
Burland V, Plunkett G 3rd, Sofia HJ, Daniels DL, Blattner FR: Analysis of the Escherichia coli genome VI: DNA sequence of the region from 92.8 through 100 minutes. Nucleic Acids Res. 1995 Jun 25;23(12):2105-19. doi: 10.1093/nar/23.12.2105.
Pubmed: 7610040
Blattner FR, Plunkett G 3rd, Bloch CA, Perna NT, Burland V, Riley M, Collado-Vides J, Glasner JD, Rode CK, Mayhew GF, Gregor J, Davis NW, Kirkpatrick HA, Goeden MA, Rose DJ, Mau B, Shao Y: The complete genome sequence of Escherichia coli K-12. Science. 1997 Sep 5;277(5331):1453-62. doi: 10.1126/science.277.5331.1453.
Pubmed: 9278503
Hayashi K, Morooka N, Yamamoto Y, Fujita K, Isono K, Choi S, Ohtsubo E, Baba T, Wanner BL, Mori H, Horiuchi T: Highly accurate genome sequences of Escherichia coli K-12 strains MG1655 and W3110. Mol Syst Biol. 2006;2:2006.0007. doi: 10.1038/msb4100049. Epub 2006 Feb 21.
Pubmed: 16738553
Valentin-Hansen P, Holst B, Josephsen J, Hammer K, Albrechtsen B: CRP/cAMP- and CytR-regulated promoters in Escherichia coli K12: the cdd promoter. Mol Microbiol. 1989 Oct;3(10):1385-90. doi: 10.1111/j.1365-2958.1989.tb00120.x.
Pubmed: 2575702
Yang C, Carlow D, Wolfenden R, Short SA: Cloning and nucleotide sequence of the Escherichia coli cytidine deaminase (ccd) gene. Biochemistry. 1992 May 5;31(17):4168-74. doi: 10.1021/bi00132a003.
Pubmed: 1567863
Craig JE, Zhang Y, Gallagher MP: Cloning of the nupC gene of Escherichia coli encoding a nucleoside transport system, and identification of an adjacent insertion element, IS 186. Mol Microbiol. 1994 Mar;11(6):1159-68. doi: 10.1111/j.1365-2958.1994.tb00392.x.
Pubmed: 8022285
Yamamoto Y, Aiba H, Baba T, Hayashi K, Inada T, Isono K, Itoh T, Kimura S, Kitagawa M, Makino K, Miki T, Mitsuhashi N, Mizobuchi K, Mori H, Nakade S, Nakamura Y, Nashimoto H, Oshima T, Oyama S, Saito N, Sampei G, Satoh Y, Sivasundaram S, Tagami H, Horiuchi T, et al.: Construction of a contiguous 874-kb sequence of the Escherichia coli -K12 genome corresponding to 50.0-68.8 min on the linkage map and analysis of its sequence features. DNA Res. 1997 Apr 28;4(2):91-113. doi: 10.1093/dnares/4.2.91.
Pubmed: 9205837
Westh Hansen SE, Jensen N, Munch-Petersen A: Studies on the sequence and structure of the Escherichia coli K-12 nupG gene, encoding a nucleoside-transport system. Eur J Biochem. 1987 Oct 15;168(2):385-91. doi: 10.1111/j.1432-1033.1987.tb13431.x.
Pubmed: 3311747
This pathway was propagated using PathWhiz -
Pon, A. et al. Pathways with PathWhiz (2015) Nucleic Acids Res. 43(Web Server issue): W552–W559.
Propagated from SMP0002075
Highlighted elements will appear in red.
Highlight Compounds
Highlight Proteins
Enter relative concentration values (without units). Elements will be highlighted in a color gradient where red = lowest concentration and green = highest concentration. For the best results, view the pathway in Black and White.
Visualize Compound Data
Visualize Protein Data
Downloads
Settings