Abstract: The present disclosure relates, according to some embodiments, to systems, apparatus, compositions, methods, and workflows that include DNase I variants with desirable properties including, for example, salt tolerance. A DNase I variant, in some embodiments, may have an amino acid sequence that is at least 85% identical, at least 90% identical, at least 95% identical, and/or at least 98% identical to SEQ ID NO:1 and may be identical to SEQ ID NO:1 at one or more positions selected from the group of positions corresponding to L29, A35, D87, Q88, S94, P103, T108, P121, P132, A135, D145, E161, G172, P190, H208, and A224 of SEQ ID NO:1.

Abstract: The present disclosure relates, according to some embodiments, to systems, apparatus, compositions, methods, and workflows that include DNase I variants with desirable properties including, for example, salt tolerance. A DNase I variant, in some embodiments, may have an amino acid sequence that is at least 85% identical, at least 90% identical, at least 95% identical, and/or at least 98% identical to SEQ ID NO:1 and may be identical to SEQ ID NO:1 at one or more positions selected from the group of positions corresponding to L29, A35, D87, Q88, S94, P103, T108, P121, P132, A135, D145, E161, G172, P190, H208, and A224 of SEQ ID NO:1.

Abstract: Among other things, a method for performing multiple enzyme reactions in a single tube is provided. In some embodiments, the method may comprise producing a reaction mix comprising a thermolabile UDG, an AP lyase and DNA fragments that comprise one or more uracil residues, incubating the reaction mix at a relatively low temperature to cleave fragments at the one or more uracil residues, raising the temperature of the reaction mix to a relatively high temperature to inactivate the thermolabile UDG; and deaminating the fragments, thereby converting any cytosine in the fragments of DNA to uracil.

Abstract: Among other things, a method for performing multiple enzyme reactions in a single tube is provided. In some embodiments, the method may comprise producing a reaction mix comprising a thermolabile UDG, an AP lyase and DNA fragments that comprise one or more uracil residues, incubating the reaction mix at a relatively low temperature to cleave fragments at the one or more uracil residues, raising the temperature of the reaction mix to a relatively high temperature to inactivate the thermolabile UDG; and deaminating the fragments, thereby converting any cytosine in the fragments of DNA to uracil.