5-Bromouracil ribonucleoside; 1-β-Ribofuranosyl-5-bromo-uracil; 5-Bromouridin
3D model (JSmol)
|Molar mass||g·mol−1 323.099|
|Appearance||Crystalline, white solid|
|Melting point||180 to 182 °C (356 to 360 °F; 453 to 455 K) (decomposes)|
Chiral rotation ([α]D)
|[α]22/D −11°, c = 2 in H2O|
|Hazardous decomposition products formed under fire conditions. - Carbon oxides, nitrogen oxides (NOx), Hydrogen
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
5-Bromouridine (abbreviated BrUrd, 5BrU, br5Urd or rarely the one letter code B) is a uridine derivative with a bromo substituent at the fifth carbon. BrUrd is incorporated into RNA and can be detected immunocytochemically and analysed by cytometry. It causes DNA damage through base substitution and increases the number of mutations.
Detecting half-Life activity
5-Bromouridine has also been used to detect the half-life of RNA molecules. In a method called 5'-bromo-uridine immunoprecipitation chase-deep sequencing analysis (BRIC-seq), 5'-bromouridine is used to label RNA and enable the measurement of RNA levels over time. This method was used in Tani et al.'s study determining RNA half-lives to investigate the function of non-coding RNAs.
Splicing of pre-mRNA
5-Bromouridine was also used to study in vitro slicing of pre-mRNA in a study by Wansink. 5-Bromoruridine 5'-triphosphate (BruUTP) was used to label pre-mRNA and investigate the efficiency of splicing. They found that splicing is inhibited if uridines in RNA transcript were replaced by BrU, which suggested that Us were critical for the splicing reaction.
Detection of RNA synthesis in individual cells
Incorporation of 5-bromouridine by individual cells was detected immunocytochemically using antibodies against BrdU followed by flow cytometry.
- 5-bromouridine in Linstrom, Peter J.; Mallard, William G. (eds.); NIST Chemistry WebBook, NIST Standard Reference Database Number 69, National Institute of Standards and Technology, Gaithersburg (MD), http://webbook.nist.gov (retrieved 2012)
- IUPAC-IUB Commission on Biochemical Nomenclature (1970). "Abbreviations and symbols for nucleic acids, polynucleotides, and their constituents". Biochemistry. 9 (20): 4022–4027. doi:10.1021/bi00822a023. PMC 1179624. PMID 5499957.
- CSID:82616, http://www.chemspider.com/Chemical-Structure.82616.html (accessed 22:51, Oct 19, 2012)
- "5-bromouridine (CHEBI:20553)." EBI.ac.uk. European Bioinformatics Institute, 30 Nov. 2010. Web. 26 Oct. 2012.<http://www.ebi.ac.uk/chebi/advancedSearchFT.do;jsessionid=29B3462C81CE2E1F80223B50A927F832?chebiId=20553&structureSearchMethod=substructure>
- Tani, H; Mizutani, R; Salam, KA; Tano, K; Ijiri, K; Wakamatsu, A; Isogai, T; Suzuki, Y; Akimitsu, N (2012). "Genome-wide determination of RNA stability reveals hundreds of short-lived noncoding transcripts in mammals". Genome Research. 22 (5): 947–56. doi:10.1101/gr.130559.111. PMC 3337439. PMID 22369889.
- Wansink, DG; Nelissen, RL; De Jong, L (1994). "In vitro splicing of pre-mRNA containing bromouridine". Molecular Biology Reports. 19 (2): 109–13. doi:10.1007/BF00997156. hdl:11245/1.105890. PMID 8072491.
- Larsen, J. K.; Jensen, P. Ø.; Larsen, J (2001). Flow cytometric analysis of RNA synthesis by detection of bromouridine incorporation. Current Protocols in Cytometry. 12. pp. 7.12.1–7.12.11. doi:10.1002/0471142956.cy0712s12. ISBN 978-0471142959. PMID 18770724.