Abstract: The invention provides a unique set of nucleic acid sequences which is appropriate for use for a wide variety of applications requiring nucleic acid tags. As such, the sequence tags of the presently claimed invention may be used, for example, to label biological and nonbiological materials, in genotyping applications and in a variety of other analyses.

Abstract: Methods are presented, in accordance for the present invention, for determining the length of a target probe. The methods have the steps of designing a first hybridization probe having a nucleic acid sequence, a portion of which overlaps with the nucleic acid sequence of a second hybridization probe, designing a second hybridization probe having a nucleic acid sequence, a portion of which overlaps with the nucleic acid sequence of the first hybridization probe, designing a target probe having the nucleic acid sequences of both the first and second hybridization probe and affixing the target probe to a solid support, labeling one of the first and second hybridization probes, but not both, and contacting simultaneously the first and second probes to the target probe, and detecting and quantifying the signal intensity ration between the labeled and non-labeled probes, whereby said ration indicating whether the target probe synthesis has reached full length.

Abstract: The invention provides a unique set of nucleic acid sequences which is appropriate for use for a wide variety of applications requiring nucleic acid tags. As such, the sequence tags of the presently claimed invention may be used, for example, to label biological and nonbiological materials, in genotyping applications and in a variety of other analyses.

Abstract: Systems and method for organizing information relating to the design of polymer probe array chips including oligonucleotide array chips. A database model is provided which organizes information interrelating probes on a chip, genomic items investigated by the chip, and sequence information relating to the design of the chip. The model is readily translatable into database languages such as SQL. The database model scales to permit storage of information about large numbers of chips having complex designs.

Abstract: Systems and methods of synthesizing probes on a substrate are provided. One or more shift reticles are utilized to uniformly add monomers to the substrate at specified locations. The shift reticles are shifted relative to the substrate between monomer addition steps. Additionally, characteristics of the desired probes may be specified at synthesis time.

Abstract: Systems, methods, and products are described for synthesizing probe arrays of polymers. A mask is used that includes reticle areas, each of which includes a number of reticles associated with a same synthesis area on a substrate. A method includes (a) aligning the mask with respect to the substrate so that a first reticle of a first reticle area is aligned with a first synthesis area and so that a second reticle of the first reticle area is aligned with a first discard area on the substrate; (b) coupling monomers on the first synthesis area at locations determined by the first reticle; (c) re-aligning the mask with respect to the substrate so that the second reticle is aligned with the first synthesis area; and (d) coupling monomers on the first synthesis area at locations determined by the second reticle. The monomers may be, for example, nucleotides, amino acids or saccharides.

Abstract: Methods, systems and computer software products are provided for nucleic acid probe array design. In one preferred embodiment, target sequences are selected from various sources and processed for probe selection.

Abstract: The invention provides arrays and probes for resequencing a SARS virus using an array of probes that are complementary to a SARS reference sequence and to each possible single nucleotide substitution of the reference sequence. Methods of identifying mutations in viral sequences and methods of characterizing viral isolates are also provided. The invention also provides high throughput methods to monitor epidemics and pandemics caused by pathogens such as viruses.

Abstract: Methods and arrays for monitoring and detecting allele specific expression of multiallelic loci are provided. The methods and arrays may be used for detecting allele specific expression patterns using hybridization to allele specific probes and sets of probes.

Abstract: A method is described that receives user-selected sequence and provides a custom array designed for resequencing the user-selected sequence. The system determines probes corresponding to the sequence and to possible variants of the sequence and generates a custom probe array design. The system then displays the custom probe array design to the user via a graphical user interface and receives a user acceptance of the design. The system provides the user with the accepted custom probe array. The system may also enable a number of users to share space on a custom probe array. Another optional feature is to enable a number of users to share in ordering portions of a lot of catalog probe arrays to take advantage of economies of scale from lot-size purchases.

Abstract: Systems and method for organizing information relating to the design of polymer probe array chips including oligonucleotide array chips. A database model is provided which organizes information interrelating probes on a chip, genomic items investigated by the chip, and sequence information relating to the design of the chip. The model is readily translatable into database languages such as SQL. The database model scales to permit storage of information about large numbers of chips having complex designs.

Abstract: Nucleic acid sequences that are complementary, in one embodiment, to a wide variety of sequences, such as bioB, bioC, bioD, cre, dap, lys, phe, thr, trp, human actin, human GAPDH, human transferrin receptor, human transcription factor ISGF-3, human 18S rRNA, human 28S rRNA, human alu, murine actin, murine GAPDH, murine tranferrin receptor, murine pyruvate carboxylase, murine B1/B2 repetitive elements, murine 18S rRNA, rat actin, rat GAPDH, rat hexokinase, rat 5S rRNA, rat B1/B2 repetitive elements, yeast actin, yeast TATA binding factor, yeast RNA polymerase II, yeast 18S rRNA and yeast 25S RNA sequences are provided. The sequences are provided in such a way as to make them available for a variety of analyses. As such, they are related to diverse fields impacted by the nature of molecular interaction, including chemistry, biology, medicine, and medical diagnostics.