Abstract
A study has been made of the kinetics of condensation reactions in phosphotriester synthesis of oligonucleotides on polystyrene copolymer resin support, using monomers, dimers, and trimers as the coupling units. The condensations follow pseudo first order kinetics, with a rate constant that decreases from monomers to dimers to trimers. Arrhenius plots indicate a nearly constant activation energy of around 10.4 kcal mol-1. Extrapolation to find the Arrhenius preexponential factor, A, is inaccurate because of the limited temperature range studied. But if the assumption is made that Ea is the same for monomer, dimer, and trimer reactions, then the A values are inversely proportional to the surface areas of the coupling units, reinforcing the interpretation of A as a collision efficiency factor.
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Selected References
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- Broka C., Hozumi T., Arentzen R., Itakura K. Simplications in the synthesis of short oligonucleotide blocks. Nucleic Acids Res. 1980 Nov 25;8(22):5461–5471. doi: 10.1093/nar/8.22.5461. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ito H., Ike Y., Ikuta S., Itakura K. Solid phase synthesis of polynucleotides. VI. Further studies on polystyrene copolymers for the solid support. Nucleic Acids Res. 1982 Mar 11;10(5):1755–1769. doi: 10.1093/nar/10.5.1755. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Seth A. K., Jay E. A study of the efficiency and the problem of sulfonation of several condensing reagents and their mechanisms for the chemical synthesis of deoxyoligoribonucleotides. Nucleic Acids Res. 1980 Nov 25;8(22):5445–5459. doi: 10.1093/nar/8.22.5445. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tan Z. K., Ikuta S., Huang T., Dugaiczyk A., Itakura K. Solid-phase synthesis of polynucleotides. VIII: A simplified synthesis of oligodeoxyribonucleotides. Cold Spring Harb Symp Quant Biol. 1983;47(Pt 1):383–391. doi: 10.1101/sqb.1983.047.01.045. [DOI] [PubMed] [Google Scholar]