The invention provides improved methods for synthesizing polynucleotides, such as DNA and RNA, using renewable initiators coupled to a solid support. Using the methods of the invention, specific sequences of polynucleotides can be synthesized de novo, base by base, in an aqueous environment, without the use of a nucleic acid template.

The invention provides improved methods for synthesizing polynucleotides, such as DNA and RNA, using renewable initiators coupled to a solid support. Using the methods of the invention, specific sequences of polynucleotides can be synthesized de novo, base by base, in an aqueous environment, without the use of a nucleic acid template.

The present invention is directed to methods and kits for template-free enzymatic synthesis of polynucleotides employing photocleavable linkages. In some embodiments, such methods include using 3′-O—NH2-dNTP monomers which may react with photocleavage products having free ketone to allow synthesis and purification on the same or an added support.

The present invention is directed to methods and kits for template-free enzymatic synthesis of polynucleotides employing photocleavable linkages. In some embodiments, such methods include using 3′-O—NH2-dNTP monomers which may react with photocleavage products having free ketone to allow synthesis and purification on the same or an added support.

The invention provides compositions, methods, kits, and devices for detecting the number and locations of polymorphic LINE-1 (pL1s) elements present in the genome of an individual and for detecting previously unknown pL1s. The inventive compositions, methods, kits, and devices permit the identification of numbers and patterns of pL1 insertions that render a person with such numbers and patterns at higher risk of developing cancer or cognitive disorders compared to persons without such numbers and patterns.

The invention provides compositions, methods, kits, and devices for detecting the number and locations of polymorphic LINE-1 (pL1s) elements present in the genome of an individual and for detecting previously unknown pL1s. The inventive compositions, methods, kits, and devices permit the identification of numbers and patterns of pL1 insertions that render a person with such numbers and patterns at higher risk of developing cancer or cognitive disorders compared to persons without such numbers and patterns.

The present invention relates to improvements in methods of high throughput nucleic acid sequencing, and in particular to improvements to methods of carrying out extension reactions during pairwise sequencing. The present invention relates to a method for carrying out a strand resynthesis extension reaction during pairwise sequencing, wherein said strand resynthesis extension reaction is carried out between a first sequencing read and a second sequencing read, and wherein said strand resynthesis extension reaction extends one or more immobilised primers to copy a first template strand to generate a second immobilised template strand; characterised in that the strand resynthesis extension reaction is carried out using a non-thermostable strand displacement polymerase at a temperature of less than 55° C., preferably at 38° C.

The present invention relates to improvements in methods of high throughput nucleic acid sequencing, and in particular to improvements to methods of carrying out extension reactions during pairwise sequencing. The present invention relates to a method for carrying out a strand resynthesis extension reaction during pairwise sequencing, wherein said strand resynthesis extension reaction is carried out between a first sequencing read and a second sequencing read, and wherein said strand resynthesis extension reaction extends one or more immobilised primers to copy a first template strand to generate a second immobilised template strand; characterised in that the strand resynthesis extension reaction is carried out using a non-thermostable strand displacement polymerase at a temperature of less than 55° C., preferably at 38° C.

A method for the isothermal amplification of nucleic acid molecules, optionally on a solid support. The method uses single stranded nucleic acids having hairpin regions at both the 3′ and 5′ ends, or the extension products thereof.

A method for the isothermal amplification of nucleic acid molecules, optionally on a solid support. The method uses single stranded nucleic acids having hairpin regions at both the 3′ and 5′ ends, or the extension products thereof.