Abstract: Methods and compositions for generating mixtures of product molecules from an initial chemical array are provided. In the subject methods, a chemical array of surface immobilized first moieties is subjected to cleavage conditions such that a composition of solution phase first moieties is produced. The resultant composition of solution phase first moieties is then contacted with one or more reactants to produce a mixture of product molecules that are different from the first moieties. Also provided are the arrays employed in the subject methods and kits for practicing the subject methods.

Abstract: Provided are improved processes and apparatuses for solid phase oligonucleotide synthesis, the improvements comprising carrying out detritylation of the nascent oligonucleotide using a composition of an organic solvent, a protic solvent and a selected concentration, or selected concentration range, of water. In some embodiments, an oligonucleotide synthesis apparatus includes means for adding water to a detritylation reagent. In some embodiments, an apparatus can include a water detector for analyzing the water concentration of a detritylation reagent to be reacted with a nascent oligonucleotide. An apparatus can comprise a feedback loop to control the concentration of water at the point of the detritylation reaction and/or to control the detritylation reaction time. The apparatuses and methods reduce batch-to-batch variations in the manufacture of oligonucleotides immobilized on the surface of various substrates.

Abstract: Methods and compositions for generating mixtures of product molecules from an initial chemical array are provided. In the subject methods, a chemical array of surface immobilized first moieties is subjected to cleavage conditions such that a composition of solution phase first moieties is produced. The resultant composition of solution phase first moieties is then contacted with one or more reactants to produce a mixture of product molecules that are different from the first moieties. Also provided are the arrays employed in the subject methods and kits for practicing the subject methods.

Abstract: Methods and compositions for generating mixtures of product molecules from an initial chemical array are provided. In the subject methods, a chemical array of surface immobilized first moieties is subjected to cleavage conditions such that a composition of solution phase first moieties is produced. The resultant composition of solution phase first moieties is then contacted with one or more reactants to produce a mixture of product molecules that are different from the first moieties. Also provided are the arrays employed in the subject methods and kits for practicing the subject methods.

Abstract: A method for controlling the use of oligonucleotide sequences released from arrays, comprises synthesizing a chemical array of oligonucleotides on a substrate under conditions for producing an array of cleavable oligonucleotides that are blocked from enzymatic reactions after cleavage. Methods may also include receiving a chemical array of cleavable oligonucleotides on a substrate, and cleaving the oligonucleotides from the array, wherein the oligonucleotides are blocked from enzymatic reactions after cleavage. Arrays, populations of oligonucleotides and kits are also provided to facilitate the methods.

Abstract: Methods and compositions for generating mixtures of product molecules from an initial chemical array are provided. In the subject methods, a chemical array of surface immobilized first moieties is subjected to cleavage conditions such that a composition of solution phase first moieties is produced. The resultant composition of solution phase first moieties is then contacted with one or more reactants to produce a mixture of product molecules that are different from the first moieties. Also provided are the arrays employed in the subject methods and kits for practicing the subject methods.

Abstract: Methods and devices for producing a nucleic acid arrays using in situ nucleic acid array synthesis protocols are provided. A feature of certain embodiments of the invention is that control probes are produced in collections of features, e.g., columns, of the arrays that have been selected according to a particular efficient control probe feature/column selection protocol. A feature of certain other embodiments of the invention is that an “all-bases-all-layers” probe set is produced in at least one of column of the arrays. Also provided are devices configured for use in the subject methods, as well as arrays produced using the subject methods and devices as well as methods for using such arrays.

Abstract: Methods and apparatus are disclosed for synthesizing a plurality of biopolymers at predetermined feature locations on a surface of a substrate. One or more of the feature locations comprises degenerate biopolymers. One or more biopolymer subunit precursors are added, in multiple rounds of subunit additions, at each of multiple feature locations on the surface to form the plurality of biopolymers on the surface. For each feature location comprising degenerate biopolymers, the biopolymer subunit precursors comprise a mixture of biopolymer subunit precursors for forming the degenerate biopolymers at the feature location.

Abstract: Methods for producing labeled probe nucleic acids from genomic nucleic acid template are provided. In some embodiments of the subject methods, a plurality of sequence-specific primers are employed to enzymatically generate a set of labeled target nucleic acids corresponding to coding regions of genes from a genomic template via a primer extension protocol. The subject methods find use in a variety of different applications, and can be used, for example, in the preparation of labeled probe nucleic acids for use in array based comparative genomic hybridization applications. Also provided are kits for use in practicing the subject methods.

Abstract: In some embodiments, the present disclosure relates to systems, compositions, and methods for treating a microarray. The compositions include a superwetting agent. The methods include contacting the microarray with an aqueous mixture including the superwetting agent after a hybridization step. Kits for carrying out the methods are also provided.

Abstract: Methods and apparatus are disclosed for preparing an array of biopolymer features on a substrate by initiating multiple cycles of drop deposition of biopolymer forming reagents to feature locations on the surface of the substrate. Each cycle comprises at least one step of deposition of biopolymer monomers or biopolymer subunits. For at least one of the biopolymer forming reagents and for at least a portion of the method, a dispensing protocol is employed wherein the biopolymer forming reagent is dispensed from a separate drop dispenser of a drop dispensing device and each drop dispenser comprises multiple nozzles. Multiple passes of the drop dispensing devices are employed for each cycle. In each cycle of the dispensing protocol drops of reagents are dispensed to feature locations from at least two different nozzles for each reagent in at least two different passes of a drop dispensing device. The cycles are repeated a sufficient number of times to prepare the array of biopolymer features.

Abstract: Aspects of the invention include methods for producing a backing element for use in an array assay device. An embodiment of the invention includes providing a precursor backing element, e.g., a solid support having a fluid retaining structure on a planar surface thereof, subjecting the precursor backing element to a solvent/plasma treatment step and then contacting the solvent/plasma treated backing element with a surface energy modification agent. Also provided are backing elements produced in accordance with embodiments of the invention, as well as array assay devices that include the backing elements. In addition, methods of using the array assay devices in analyte detection applications, as well as kits for use therein are provided.

Abstract: Provided are improved processes and apparatuses for solid phase oligonucleotide synthesis, the improvements comprising carrying out detritylation of the nascent oligonucleotide using a composition of an organic solvent, a protic solvent and a selected concentration, or selected concentration range, of water. In some embodiments, an oligonucleotide synthesis apparatus includes means for adding water to a detritylation reagent. In some embodiments, an apparatus can include a water detector for analyzing the water concentration of a detritylation reagent to be reacted with a nascent oligonucleotide. An apparatus can comprise a feedback loop to control the concentration of water at the point of the detritylation reaction and/or to control the detritylation reaction time.

Abstract: Provided are improved processes for solid phase oligonucleotide synthesis, the improvements comprising carrying out detritylation of the nascent oligonucleotide using a composition of an organic solvent, a protic solvent and a protic acid. In some embodiments, a protic solvent is present at a concentration sufficient to destroy one or more impurities that can act as capping agents during a detritylation step and which reduce the oligonucleotide yield. Exemplary protic solvents include water, alcohols, or amines. Exemplary protic acids include monochloroacetic acid, dichloroacetic acid, and trichloroacetic acid.

Abstract: A method and system for quantifying and correcting spatial-intensity trends for each channel of a microarray data set having one or more channels. The method and system of one embodiment of the present invention selects a set of features from each channel of the microarray data set. Based on the selected set of features, a surface is used to determine the intensities for all features in each channel of the microarray data set. Spatial-intensity trends within the microarray data set are quantified, based on the surface to the intensities for each channel of the microarray data set. After the surface has been determined, the spatial-intensity trend can be removed from the microarray data set.

Abstract: Methods and articles for analyzing nucleotide sequences of nucleic acid molecules, e.g., using multiple probes per spot of an array, are described. In some embodiments, the methods and articles can reduce the numbers of arrays necessary to probe regions of interest in a biological sample, and/or increase the resolution at which biological events are probed. In some cases, these methods exploit the vertical aspect of an array in order to decrease the number of arrays or spots required for an assay. These probes may be in the form of compound probes, which comprise at least first and second probes, including first and second nucleotide sequences capable of hybridizing to first and second target nucleotide sequences, respectively, in a nucleic acid molecule of interest.

Abstract: Methods and devices for producing a polymer at a location of a substrate are provided. In the subject methods, a fluid droplet containing a first monomer labeled with a first detectable label is deposited from a fluid deposition device onto a location of a substrate surface having a second monomer labeled with a second detectable label. The first and second detectable labels are then detected to determine any misalignment between the fluid deposition device and the location of the substrate surface during deposition. Also provided are algorithms that perform the subject methods, as well as fluid deposition devices that include the subject algorithms. The subject invention also includes arrays produced according to the subject methods and kits that include the subject arrays.

Abstract: The invention provides a method and apparatus for micro array fabrication exclusive from the impact of a gas. A housing with a gas free chamber provides for improved micro array fabrication with a lower defect rate. The invention provides a housing that excludes a gas such as ozone to prevent interaction with probe construction or attachment. A method of fabricating a micro array in an ozone free environment is also disclosed.

Abstract: Methods and compositions for high-throughput identification of protein/nucleic acid binding pairs are provided. In the subject methods, a nucleic acid probe array, e.g., a molecular beacon probe array, is contacted with a target nucleic acid population to produce a hybridized array. The resultant hybridized array is then contacted with a population of proteins to produce a protein bound array. Any resultant array surface bound target nucleic acid/protein complexes are then detected to identify protein/nucleic acid binding pairs. In certain embodiments, the protein and/or nucleic acid members of the identified protein/nucleic acid binding pairs are further characterized. Also provided are systems and kits for use in practicing the subject methods. The subject invention finds use in a variety of different applications.

Abstract: A system is described which comprises an input manager for receiving probe request information from a probe requester and a processing module configured to identify a probe sequence associated with the probe request information, wherein the processing module associates a flag with one or more nucleic acid sequences corresponding to the probe request associated with a predefined sequence characteristic. Methods of using the system and computer program products for implementing the methods are also described.