Abstract
Synthetically-prepared 5'-NH2-dT(pdT)n oligomers (66,n=4 or 7) were immobilized on cyanogen bromide activated cellulose. The influence of temperature, pH, and ionic strength on the rate of the coupling process was studied. The oligomer 5'-NH2-DT(pdT)8 could be elongated enzymatically to the polymers 5'-NH2-dT(pdT)n (n=20, 51 and 84), which could be immobilized on cellulose. The cellulose-NH-dT(pdT)84 polymer thus obtained could be assembled to a new solid-state polymer e.g. poly(dA)290 . poly(/3H/dT)200, poly(dT)85-cellulose which, in turn, was a very convenient substrate for assaying DNA-ligase.
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Selected References
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