49793results about "Peptide preparation methods" patented technology

This invention provides a sustained-release preparation comprising a biodegradable polymer metal salt and broactive polypeptide, with enhanced entrapment of the bioactive polypeptides, a suppression of initial burst, and a constant long-term release of the bioactive polypeptides.

A bispecific antibody format providing ease of isolation is provided, comprising immunoglobulin heavy chain variable domains that are differentially modified in the CH3 domain, wherein the differential modifications are non-immunogenic or substantially non-immunogenic with respect to the CH3 modifications, and at least one of the modifications results in a differential affinity for the bispecific antibody for an affinity reagent such as Protein A, and the bispecific antibody is isolable from a disrupted cell, from medium, or from a mixture of antibodies based on its affinity for Protein A.

Disclosed are methods of producing eukaryotic disulfide bond-containing polypeptides in bacterial hosts, and compositions resulting therefrom. Co-expression of a eukaryotic foldase and a disulfide bond-containing polypeptide in a bacterial host cell is demonstrated. In particular embodiments, the methods have been used to produce mammalian pancreatic trypsin inhibitor and tissue plasminogen activator (tPA) in soluble, biologically-active forms, which are isolatable from the bacterial periplasm. Also disclosed are expression systems, recombinant vectors, and transformed host cells.

Full-length cDNAs of plants and their uses are provided. Source plants are preferably monocot plants, more preferably poaceous plants, and most preferably rice. Vectors carrying said cDNAs and transformants containing said cDNAs or said vectors, transgenic plants containing said transformants, polypeptides encoded by said cDNAs are also provided. The full-length cDNA clones play important roles in the annotation of correct gene coding region, determination of exons and introns, comprehensive expression analysis on the transcription level and proteome analysis. Furthermore, full-length cDNA clones are industrially useful in producing plants having different properties from those of the wild type due to the inhibition of expression and functional suppression in plant bodies.

The invention relates to the fields of screening assays, compounds, and methods for altering gene expression and protein levels. In particular, the invention includes assays to screen for agents capable of modulating gene expression in a UTR-dependent manner and agents capable of modulating gene expression.

In the course of the present invention, it was discovered that one could regulate association between polypeptides by modifying amino acid residues that form the interface during the association to amino acids carrying the same type of charge. In this context, the present invention enables efficient formation of heterologous molecules. For example, the present invention can be suitably applied to the preparation of bispecific antibodies.

The present invention concerns an apparatus for conducting a microfluidic process. The apparatus comprises integral first and second plates. The first plate comprises an array of sample receiving elements for receiving a plurality of samples from an array of sample containers and dispensing the samples. The second plate comprises a planar array of microfluidic networks of cavity structures and channels for conducting a microfluidic process. Also disclosed is a method for processing an array of samples. At least a portion of each sample in an array of sample wells is simultaneously transferred to a corresponding array of microfluidic networks of cavity structures and channels by means of a corresponding array of sample receiving elements that is in integral fluid communication with the array of microfluidic networks. The samples are then processed. Also disclosed is a device for conducting a microfluidic process wherein the device comprising a planar substrate having a planar array of microfluidic networks of cavity structures and channels for conducting a microfluidic process. A plurality of such devices may be present on a continuous sheet. The invention further includes kits for carrying out microfluidic processes comprising an apparatus as described above.

The present invention provides novel microfluidic devices and methods that are useful for performing high-throughput screening assays and combinatorial chemistry. Such methods can include labeling a library of compounds by emulsifying aqueous solutions of the compounds and aqueous solutions of unique liquid labels on a microfluidic device, which includes a plurality of electrically addressable, channel bearing fluidic modules integrally arranged on a microfabricated substrate such that a continuous channel is provided for flow of immiscible fluids, whereby each compound is labeled with a unique liquid label, pooling the labeled emulsions, coalescing the labeled emulsions with emulsions containing a specific cell or enzyme, thereby forming a nanoreactor, screening the nanoreactors for a desirable reaction between the contents of the nanoreactor, and decoding the liquid label, thereby identifying a single compound from a library of compounds.