Welcome to the Jemielity Group

Welcome at the website of Jacek Jemielity Group at Centre of New Technologies and the Division of Biophysics, Faculty of Physics, University of Warsaw. Our group is interested in the chemical synthesis, properties and applications of modified nucleotides and nucleic acids. Our research encompasses improving methods for the chemical synthesis of nucleotide analogs, designing new modified nucleotides as tools for molecular biology and conjugating nucleotides to labels, tags and new materials. One of our particular interests, is development of eukaryotic mRNA cap analogs with potential medicinal applications.

Recent News

mRNA labeling published in Angewandte

A new approach to fluorescent labeling of translationally active mRNA has been published today in Angewandte Chemie International...

Welcome to Marcelina and Mikołaj

We warmly welcome two new team members, Marcelina Bednarczyk and Dr Mikołaj Chromiński. Marcelina is starting a Ph. D....

Post-Doc wanted

We are looking for candidates to fill postdoctoral research position in a bioorganic chemistry-oriented research project, available from December...

News archive


Synthesis and applications of phosphate-modified nucleotides
mRNA cap analogs for the preparation of chemically engineered mRNAs
Cap analog-based inhibitors of protein biosynthesis
Nucleotide labeling, conjugation and immobilization

Molecular Collection

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Mononucleotide mRNA cap analogs with unmodified (oligo)phosphate moiety
Mononucleotide mRNA cap analogs with modified (oligo)phosphate moiety
enzymatically resistant inhibitors or translation
Reagent for the preparation of mRNAs with enhanced stability and translation efficiency β-S-ARCA

Recent Publications

Analysis of mononucleotides by tandem mass spectrometry: investigation of fragmentation pathways for phosphate- and ribose-modified nucleotide analogues

By Dominika Strzelecka, Sebastian Chmieleinski, Sylwia Bednarek, Jacek Jemielity, Joanna Kowalska,

Published in Scientific Reports 7 (2017) 8931

mRNA cap analogues substituted in the tetraphosphate chain with CX2: identification of O-to-CCl2 as the first bridging modification that confers resistance to decapping without impairing translation

By Anna M. Rydzik, Marcin Warminski, Pawel J. Sikorski, Marek R. Baranowski, Sylwia Walczak, Joanna Kowalska, Joanna Zuberek, Maciej Lukaszewicz, Elzbieta Nowak, Timothy D. W. Claridge, Edward Darzynkiewicz, Marcin Nowotny, Jacek Jemielity,

Published in Nucleic Acids Research 45 (2017) DOI: https://doi.org/10.1093/nar/gkx569

Synthesis of RNA 5′-Azides from 2′-O-Pivaloyloxymethyl-Protected RNAs and Their Reactivity in Azide–Alkyne Cycloaddition Reactions

By Marcin Warminski, Joanna Kowalska, Jacek Jemielity,

Published in Organic Letters 19 (2017) 3624–3627

Publications archive