Modification Summary


[show modification pathway]


Full name4-thiouridine
Short names4U
New Nomenclature74U
RNAMods abbreviation4
HTML abbreviation4
Enzymes ThiI (Escherichia coli)
Found in phylogenyEubacteria
Found in RNAtRNA
PubChem ID3954028
SMILES codeC3(OC(CO)C(O)C(O)3)N1C=CC(=S)NC1(=O)

LC-MS Informations

Sum formulaC9O5N2H12S1
Monoisotopic mass260.046692
Average mass260.269401
HRMS mass260.046143
Normalized LC elution time *1,15 (Kellner 2014); 1,18 (Kellner 2014)
LC elution order/characteristicsbetween G and A (Kellner 2014, Kellner 2014)
Mass transition-132 (Kellner 2014, Kellner 2014)

* normalized to guanosine (G), measured with a RP C-18 column with acetonitrile/ammonium acetate as mobile phase.

LC-MS Publications

Title Authors Journal Details PubMed Id DOI
Profiling of RNA modifications by multiplexed stable isotope labelling. Kellner S, Neumann J, Rosenkranz D, Lebedeva S, Ketting RF, Zischler H, Schneider D, Helm M. Chem Commun (Camb). [details] 24567952 -
Absolute and relative quantification of RNA modifications via biosynthetic isotopomers. Kellner S, Ochel A, Thuring K, Spenkuch F, Neumann J, Sharma S, Entian KD, Schneider D, Helm M... Nucleic Acids Res [details] 25129236 -

Download [.mol file for s4U]

Chemical groups contained

heavy atomsulfur

Reactions producing 4-thiouridine


Occurrence in PDB structures

PDB-ID chain residue
1b23 R 4SU /8
1c0a B 4SU /608
1efw C 4SU /8
1efw D 4SU /8
1gix D 4SU /8
1jgo D 4SU /8
1jgp D 4SU /8
1jgq D 4SU /8
2fmt C S4U /8
2fmt D S4U /8
2i1c z 4SU /8

Last modification of this entry: 2017-07-05 15:47:29.876058
Edited by a user: pboccaletto
Edited content: Changed lc_elution_time, lc_elution_comment, lc_reference and mass_trans.