Promega Corporation

Illumina Corporation

Mark A Maffitt

James Robert Hartnett

Igor Yu Goryshin

Ramesh Vaidyanathan

John E Monahan

James W Schumm

Leopoldo G Mendoza

Richard A Martinelli

Steven J Ekenberg

Bradley Baas

Randall L Dimond

Edward E Pahuski

Katharine M Miller

Geoffrey R Hudson

Christopher L Jones

Mary Haak-Frendscho

Andrew L Niles

Kevin L Gunderson

Frank J Steemers

Jerome J Jendrisak

Sasan Amini

Fiona Kaper

Nicholas Caruccio

Natasha Pignatelli

Thomas Royce

Igor Goryshin

Casey Turk

Reza Kahlor

Reza Kalhor

Transposomes and oligonucleotide replacement methods to make DNA libraries that have distinct 5' and 3&#x2032; tags, and to make directional libraries that are enriched for a desired strand.

Oligonucleotide replacement for di-tagged and directional libraries

Disclosed is a method of expressing enzymatically-active, recombinant proteolytic tryptase in a eukaryotic host cell, expression constructs which drive the production of enzymatically-active tryptase in transformed hosts, and genetically-engineered eukaryotic host cells containing the expression constructs and which express enzymatically-active proteolytic tryptases. Uses for the proteolytic tryptases so produced are also disclosed. Also disclosed is a method of making active site mutants of proteolytic tryptases in a eukaryotic host cell, expression constructs which drive the production of the mutants in transformed eukaryotic host cells, and genetically-engineered eukaryotic host cells containing the expression constructs and which express the active-site mutated form of proteolytic tryptases.

Recombinant proteolytic tryptases, active site mutants thereof, and methods of making same

The present invention entails methods and kits for carrying them out based on the discovery that an RNA replicase, such as Q&bgr; replicase, has DNA-dependent RNA polymerase (&ldquo;DDRP&rdquo;) activity with nucleic acid segments, including DNA segments and DNA:RNA chimeric segments, which comprise a 2&prime;-deoxyribonucleotide or an analog thereof and which have sequences of RNAs that are autocatalytically replicatable by the replicase.

Nucleic acid amplification with DNA-dependent RNA polymerase activity of RNA replicases

The present invention entails methods, and kits for carrying them out, based on the discovery that an RNA replicase, such as Q&bgr; replicase, has DNA-dependent RNA polymerase (&ldquo;DDRP&rdquo;) activity with nucleic acid segments, including DNA segments and DNA:RNA chimeric segments, which comprise a 2&prime;-deoxyribonucleotide or an analog thereof and which have sequences of RNAs that are autocatalytically replicatable by the replicase. The discovery of this DDRP activity provides methods of the invention for nucleic acid amplification wherein a nucleic acid, with a DNA segment with the sequence of an RNA that is autocatalytically replicatable by an RNA replicase, is provided as a substrate for the replicase. The replicase catalyzes synthesis, from the DNA segment, of the RNA, which the replicase then autocatalytically replicates. The invention entails use of the amplification methods in detecting nucleic acid analytes, as in nucleic acid probe hybridization assays. Such assays of the invention include those wherein a nucleic acid analyte is hybridized with one or more nucleic acid probes, which include or are processed to generate a DNA segment which is amplifiable through production from the segment, catalyzed by the DDRP activity of an RNA replicase, of an autocatalytically replicatable RNA, which is autocatalytically replicated to provide an abundance of readily detectable reporter molecules. The invention permits replacement of an RNA, that is autocatalytically replicatable with an RNA replicase and employed as a reporter or label in prior art assays, such as nucleic acid probe hybridization assays or immunoassays, with a nucleic acid comprising a DNA segment with the same base sequence as the RNA. The invention also includes the methods of the invention with Mn , Co , or Zn in the solutions in which the DDRP activity occurs.

Disclosed is a method of expressing enzymatically-active, recombinant human &bgr;-tryptase in a yeast host cell, expression constructs which drive the production of enzymatically-active tryptase in transformed yeast, and genetically-engineered yeast containing the expression constructs and which express enzymatically-active human &bgr;-tryptase. Uses for the tryptase so produced are also disclosed.

Enzymatically-active recombinant human &bgr;-tryptase and method of making same

The present invention entails methods, and kits for carrying them out, based on the discovery that an RNA replicase, such as Q.beta. replicase, has DNA-dependent RNA polymerase ('DDRP') activity with nucleic acid segments, including DNA segments and DNA:RNA chimeric segments, which comprise a 2'-deoxyribonucleotide or an analog thereof and which have sequences of RNAs that are autocatalytically replicatable by the replicase. The discovery of this DDRP activity provides methods of the invention for nucleic acid amplification wherein a nucleic acid, with a DNA segment with the sequence of an RNA that is autocatalytically replicatable by an RNA replicase, is provided as a substrate for the replicase. Assays of the invention include those wherein a nucleic acid analyte is hybridized with one or more nucleic acid probes, which include or are processed to generate a DNA segment which is amplifiable through production from the segment, catalyzed by the DDRP activity of an RNA replicase, of an autocatalytically replicatable RNA, which is autocatalytically replicated to provide an abundance of readily detectable reporter molecules.

Nucleic acid amplification with DNA-dependent RNA polymerase activity of

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Madison, WI, United States of America

Mark A Maffitt