Abstract: The invention relates to an isolated nuclion having (i) a core nucleic acid, and (ii) one or more ribocapsids each including a polymer of two or more ribocapsid subunits, wherein said ribocapsid subunits include nucleic acid. The invention also relates to a method for manufacturing an isolated nuclion.

Abstract: The invention relates to an isolated nuclion having (i) a core nucleic acid, and (ii) one or more ribocapsids each including a polymer of two or more ribocapsid subunits, wherein said ribocapsid subunits include nucleic acid. The invention also relates to a method for manufacturing an isolated nuclion.

Abstract: Presented are methods and compositions for targeted chromosomal genomic alterations using modified single-stranded oligonucleotides. The oligonucleotides of the invention have at least one modified nuclease-resistant terminal region comprising phosphorothioate linkages, LNA analogs or 2?-O-Me base analogs.

Abstract: Methods for the production and use of stable complexes of duplex nucleic acid molecules and oligonucleotides are presented. These complexes can be used for the detection and purification of a known nucleic acid target as well as the manipulation of a defined nucleic acid target sequence.

Abstract: Presented are methods and compositions for targeted chromosomal genomic alterations using modified single-stranded oligonucleotides of the invention have at least one modified nuclease-resistant terminal region comprising phosphorothioate linkages, LNA analogs or 2?-O-Me base analogs.

Abstract: Presented are methods and compositions for targeted chromosomal genomic alterations using modified single-stranded oligonucleotides. The oligonucleotides of the invention have at least one modified nuclease-resistant terminal region comprising phosphorothioate linkages, LNA analogs or 2?-O-Me base analogs.

Abstract: The invention concerns novel compounds used to make specific genetic alterations in the genome of target eukaryotic and prokaryotic cells, methods of their production and use, and kits containing the compounds. The compounds are two-strand duplex oligonucleobase compounds termed binary Hybrid Mutational Vectors (bHMV). A bHMV preferably contains a deoxyribo-type oligonucleobase mutator strand and a ribo-type oligonucleobase targeting strand. A bHMV is constructed to effect changes in a target gene via a combination of gene targeting and mismatch repair between the bHMV and the target gene.

Abstract: Presented are methods and compositions for targeted chromosomal genomic alterations using modified single-stranded oligonucleotides of the invention have at least one modified nuclease-resistant terminal region comprising phosphorothioate linkages, LNA analogs or 2′-O-Me base analogs.

Abstract: Presented are methods and compositions for targeted chromosomal genomic alterations with modified single-stranded oligonucleotides. The oligonucleotides of the invention have modified nuclease-resistant termini comprising LNA, phosphorothioate linkages or 2′-O-Me base analogues or combinations of such modifications.

Abstract: Presented are methods and compositions for targeted chromosomal genomic alterations using modified single-stranded oligonucleotides. The oligonucleotides of the invention have at least one modified nuclease-resistant terminal region comprising phosphorothioate linkages, LNA analogs or 2′-0-Me base analogs.

Abstract: Methods are presented for enhancing the efficiency of oligonucleotide-medidated repair or alteration of genetic information. The methods comprise using cells or cell-free extracts having altered levels or activity of at least one protein from the RAD52 epistasis group, the mismatch repair group or the nucleotide excision repair group. Kits and compositions are also presented.

Abstract: The invention is based on the reaction of recombinagenic oligonucleotides in a cell-free system containing a cytoplasmic cell extract and a test duplex DNA on a plasmid. The reaction specifically converts a mutant kanr gene to recover the resistant phenotype in transformed MutS, RecA deficient bacteria and allows for the rapid and quantitative comparison of recombinagenic oligonucleobases. Using this system a type of Duplex Mutational Vector termed a Heteroduplex Mutational Vector, was shown to be more active in than the types of mutational vectors heretofore tested. Further improvements in activity were obtained by replacement of a tetrathymidine linker by a nuclease resistant oligonucleotide, such as tetra-2′-O-methyl-uridine, to link the two strands of the Duplex Mutational Vector and removal of the DNA-containing intervening segment. The claims concern Duplex Mutational Vectors that contain the above improvements.

Abstract: Presented are methods and compositions for targeted chromosomal genomic alterations using modified single-stranded oligonucleotides. The oligonucleotides of the invention have at least one modified nuclease-resistant terminal region comprising phosphorothioate linkages, LNA analogs or 2′-O-Me base analogs.

Abstract: The invention concerns novel compounds used to make specific genetic alterations in the genome of target eukaryotic and prokaryotic cells, methods of their production and use, and kits containing the compounds. The compounds are two-strand duplex oligonucleobase compounds termed binary Hybrid Mutational Vectors (bHMV). A bHMV preferably contains a deoxyribo-type oligonucleobase mutator strand and a ribo-type oligonucleobase targeting strand. A bHMV is constructed to effect changes in a target gene via a combination of gene targeting and mismatch repair between the bHMV and the target gene.

Abstract: Minor groove binding molecules are covalently bound to oligonucleotides which in their base sequence are complementary to a target sequence of single stranded or double stranded DNA, RNA or hybrids thereof. The covalently bound oligonucleotide minor groove binder conjugates strogly bind to the target sequence of the complementary strand.

Abstract: Minor groove binding molecules are covalently bound to oligonucleotides which in their base sequence are complementary to a target sequence of single stranded or double stranded DNA, RNA or hybrids thereof. The covalently bound oligonucleotide minor groove binder conjugates strogly bind to the target sequence of the complementary strand.

Abstract: Minor groove binding molecules are covalently bound to oligonucleotides which in their base sequence are complementary to a target sequence of single stranded or double stranded DNA, RNA or hybrids thereof. The covalently bound oligonucleotide minor groove binder conjugates strogly bind to the target sequence of the complementary strand.

Abstract: Methods and compositions for efficient targeting and modification of target sequences in duplex DNA are provided, utilizing oligonucleotides or oligonucleotide compositions containing two domains. The first domain comprises an entity capable of recognizing a double-stranded DNA sequence. This can be a protein, peptide, antibiotic, minor groove binding agent or a nucleotide sequence capable of triplex formation The second domain, which is covalently joined to the first, is capable of recognizing a single-stranded DNA sequence. This second domain will most often be complementary, in the Watson-Crick sense, to a target sequence in the double-stranded nucleic acid. The second domain can optionally carry one or more modifying groups, capable of causing a mutation, a pre-mutagenic lesion, or some other type of heritable change in the target sequence.

Abstract: Chemically modified oligonucleotides (ODNS) are complementary, either in the sense of the classic “four letter code” recognition motif, or in the sense required for triple strand formation based on the more limited “two letter code recognition motif”, to a target sequence of double stranded DNA of an invading cell, organism or pathogen, such as a virus, fungus, parasite, bacterium, malignant cell, or any duplex DNA which is desired to be broken into segments for the purpose of “mapping”. The ODNs have cross-linking agents covalently attached at least to two different sites of the ODN. Alternatively, the cross-linking agent which is attached to one site on the ODN has two cross-linking functionalities, and therefore in effect comprises two cross-linking agents.

Abstract: A method for introducing a site-specific mutation into a target polynucleotide sequence is presented. The method involves the use of an oligonucleotide capable of binding to the target sequence, either by triplex formation (mediated by Hoogsteen, reverse Hoogsteen or equivalent base pairing) or by Watson/Crick base pairing (in the presence of a recombinase enzyme). The oligonucleotide of the invention is modified by the covalent attachment of one or more electrophilic groups. When a modified oligonucleotide is bound to its target sequence, the electrophilic group is able to interact with a nearby nucleotide in the target sequence, causing a modification to the nucleotide that results in a change in nucleotide sequence. Compositions used in the practice of the method are also disclosed.