摘要:
Disclosed is a method for determining whether a first protein is capable of physically interacting with a second protein. The method involves: (a) providing a host cell which contains (i) a reporter gene operably linked to a protein binding site; (ii) a first fusion gene which expresses a first fusion protein, the first fusion protein including the first protein covalently bonded to a binding moiety which is capable of specifically binding to the protein binding site; and (iii) a second fusion gene which expresses a second fusion protein, the second fusion protein including the second protein covalently bonded to a weak gene activating moiety; and (b) measuring expression of the reporter gene as a measure of an interaction between the first and the second proteins. Such a determination facilitates the isolation of the gene encoding the interacting protein. Also disclosed herein is recombinant Cdi1 polypeptide, nucleic acid encoding the Cdi1 polypeptide, and uses thereof.
摘要:
Disclosed are substatially pure preparations of Max-Interacting (Mxi) polypeptides, DNA encoding such polypeptides, antibodies recognizing such polypeptides, and diagnostic and therapeutic methods utilizing such polypeptides.
摘要:
A method for the identification of compounds as inhibitors of oncoprotein action is described. A compound is identified as an inhibitor of oncoprotein action based on its ability to modulate the transcription of a reporter gene. Transcription of the reporter gene is dependent upon the binding of a fusion oncoprotein to a specific DNA binding element positioned upstream of the reporter gene promoter. The fusion oncoprotein contains a transcriptional regulatory domain from an oncoprotein and a DNA binding domain from a different protein.
摘要:
Regulation of eucaryotic gene expression is controlled by procaryotic peptides. The peptides recognize specific DNA sequences present in the gene, which may be derived from procaryotic genes, and either activate or repress gene transcription. Hybrid procaryotic peptides may be used containing both repressor and activator peptides.
摘要:
A method of identifying substances in a material handling work environment that analyzes sensor input from the environment with an image processor to extract features of the substance using optical flow and object recognition, and operates a vector modeler and a particle modeler to generate multiple predictions about particle movement within the substance based on existing data models for physical properties to generate multiple predictions of physical properties of the substance.
摘要:
Disclosed herein are methods for detecting complex protein interactions and protein functional relationships, and reagents for carrying out those methods.
摘要:
Disclosed herein is a method of determining whether a first protein is capable of physically interacting with a second protein, involving: (a) providing a host cell which contains (i) a reporter gene operably linked to a protein binding site; (ii) a first fusion gene which expresses a first fusion protein, the first fusion protein including the first protein covalently bonded to a binding moiety which is capable of specifically binding to the protein binding site; and (iii) a second fusion gene which expresses a second fusion protein, the second fusion protein including the second protein covalently bonded to a gene activating moiety and being conformationally-constrained; and (b) measuring expression of the reporter gene as a measure of an interaction between the first and the second proteins. Also disclosed are methods for assaying protein interactions, and identifying antagonists and agonists of protein interactions. Proteins isolated by these methods are also discussed. Finally, populations of eukaryotic cells are disclosed, each cell having a recombinant DNA molecule encoding a conformationally-constrained intracellular peptide.
摘要:
A system and method for characterizing protein molecules. A protein molecule of interest is isolated from other types of protein molecules. The protein molecule of interest is modified to a one-dimensional structure from the natural three-dimensional structure of the protein molecule. Each of a first type of amino acid residue of the protein molecule is labeled with a first tag. Each of a second type of amino acid residue of the protein molecule is labeled with a second tag. The first and second tags impart to the protein molecule a detectable set of characteristic ancillary properties that facilitates distinction of the protein molecule of interest from other types of protein molecules. When these ancillary properties are detected, a fingerprint of the protein molecule is revealed. A listing of known protein molecules and of the fingerprints corresponding to each of the known protein molecules serves as a library to facilitate identification of unknown proteins. A fingerprint of a protein molecule of interest determined in the same manner as the fingerprints of known proteins listed in the library is compared with fingerprints of the known protein molecules to identify the protein molecule of interest.
摘要:
Disclosed herein is a method of determining whether a first protein is capable of physically interacting with a second protein, involving: (a) providing a host cell which contains (i) a reporter gene operably linked to a protein binding site; (ii) a first fusion gene which expresses a first fusion protein, the first fusion protein including the first protein covalently bonded to a binding moiety which is capable of specifically binding to the protein binding site; and (iii) a second fusion gene which expresses a second fusion protein, the second fusion protein including the second protein covalently bonded to a gene activating moiety and being conformationally-constrained; and (b) measuring expression of the reporter gene as a measure of an interaction between the first and the second proteins. Also disclosed are methods for assaying protein interactions, and identifying antagonists and agonists of protein interactions.
摘要:
Disclosed are substatially pure preparations of Max-Interacting (Mxi) polypeptides, DNA encoding such polypeptides, antibodies recognizing such polypeptides, and diagnostic and therapeutic methods utilizing such polypeptides.