Abstract: A separation module and method are disclosed for processing a liquid sample and providing high conversion by operating a single-pass tangential-flow process without a recirculation loop. In one embodiment, the separation module includes three reservoirs and has at least one long, thin channel with a large ratio of channel membrane area to: channel void volume; volume of a sample feed reservoir; and volume of the feed sample. In another embodiment, the separation module includes an external feed reservoir, an external retentate reservoir fluidly and a first vacuum source adapted to apply a first vacuum to the separation element disposed within the housing. The single-pass TFF separation element and single-pass process provides high conversion while operating with relatively low pressure sources. Certain embodiments disclosed herein can be used for the separation of blood.

Abstract: The present invention features a coating consisting of a functionalized polymeric surface coating comprising reactive entities. These entities could consist of amino-, hydroxyl; epoxy- or other covalently linked in a polymer network of polyurea and polyurethane to provide a surface coating. This functionalized coating is applied to surfaces of a non-woven material composed of fibers. One embodiment of present invention is application to fibers at a level of 0.01 to 1 micromole/cm2 amine without poragens to be utilized for peptide and combinational chemistry synthesis. Furthermore, the coating can be applied to fiber at a high level with a crinkly fiber coating abased on the use of a poragen, thus creating a matrix having a higher loading on higher surface area for synthesis and other applications. These embodiments may be applied to various fields and technologies, e.g., proteomics, genomics, combinatorial chemistry, and chromatography.

Abstract: The present invention relates to improved alternatives for hot-start PCR hybridization and amplification methods by using, in an embodiment, a heat-reversible, covalent modification of nucleic acids to disrupt hybridization of primer to template, or to interfere with the ability for the polymerase enzyme to recognize nucleoside triphosphates. In an illustrative embodiment, the amino groups of guanosine have been reversibly modified by reaction with glyoxal under mild conditions.

Abstract: A new method, solid phase precipitation and extraction (SPPE), is disclosed and is particularly advantageous for purifying mixtures of synthetic peptides directly from a cleavage/deprotection mixture.

Abstract: Methods for preparing organic compounds, such as oligonucleotides, on solid supports are described. Libraries of the compounds and methods of using the compounds are also disclosed.

Abstract: A membrane suitable for immobilizing peptides and proteins is disclosed. The membrane is a flexible, polymeric, porous membrane which contains functional groups capable of covalently linking the peptides and proteins. The functional groups can be provided by reacting the membrane itself or a coating thereon with nucleophiles which provide --NH.sub.2, --SH, --OH or --COOH functionality to the membrane surface. Additionally, surfaces containing --NH.sub.2 groups can be further reacted with diisothiocyantes to provide an isothiocyanate functionality having enhanced covalent binding characteristics.

Abstract: A process and apparatus for the conversion of anilinothiazolino amino acid derivatives of peptides and proteins for use with conventional sequencers in the overall Edman degradation process. The apparatus comprises a modular unit separate from the sequencer having an independently programmable control and flow actuating and directing means including a source of pressurized nitrogen, a conversion reagent container, a wash solvent container, a reaction vessel, and a plurality of interconnecting tubes and valves controlled so as to regulate the amounts and durations of all fluids entering and leaving said reaction vessel under gas pressure.The process comprises performing the steps of conversion, sample recovery, drying and washing at temperatures below but near to the respective boiling points of both the reagent and the solvent, and under reflux tower conditions.

Abstract: A process and apparatus for pulse labelling protein material for high sensitivitiy sequence analysis of protein material by Edman degradation technique comprising an isolated, auxiliary unit for storing a radioactive coupling reagent together with tubes, valves and controls for interrupting the Edman process, for pumping a measure of radioactive coupling reagent into the reaction vessel, a timer for controlling duration of contact between the radioactive reagent, and the protein material to maximize the coupling reaction therebetween, and thereafter reactivating the Edman process to admit nonradioactive coupling reagent to the vessel and to drive the coupling reaction to completion.