摘要:
The present invention provides mass spectrometry-based methods for high throughput identification of molecules with functional activities such as nuclease, protease, reductase, kinase, phosphatase, or transferase activities towards biomolecular targets. These methods are useful for screening biological samples such as extracts, broths, lysates and natural product mixtures and provide valuable insights into biomolecular interactions of various biological ligands with biomolecular targets.
摘要:
The present invention provides mass spectrometry-based methods for high throughput identification of molecules with functional activities such as nuclease, protease, reductase, kinase, phosphatase, or transferase activities towards biomolecular targets. These methods are useful for screening biological samples such as extracts, broths, lysates and natural product mixtures and provide valuable insights into biomolecular interactions of various biological ligands with biomolecular targets.
摘要:
The present disclosure is related to improved systems and methods for delivering samples for high-throughput mass spectrometric analysis to an atmospheric-pressure ionization source. In an exemplary embodiment, the system includes a solvent reservoir for storing a solvent solution, a first valve which is coupled to the solvent reservoir, first and second pumps for delivering solvent solution and which are coupled to the first valve and which the delivery flow rate of the first pump is greater than the delivery flow rate of the second pump, an injection system having a sample injector and an second valve which is coupled to the first valve and which is capable of being coupled to can be couple to an electrospray ionization source. In another embodiment, the system can also include an atmospheric-pressure ionization chamber, an atmospheric-pressure ionization sprayer and a nebulizer gas source and a voltage supply source. In yet another embodiment, the system may further include a puffer valve that is coupled to the nebulizer gas source and the atmospheric-pressure ionization sprayer and a gas puffer that is coupled to the puffer valve. A distal end of the gas puffer may be located within the atmospheric-pressure ionization chamber and aligned with the distal end of the atmospheric-pressure ionization sprayer and the puffer valve may control the delivery of the nebulizer gas to the atmospheric-pressure ionization sprayer and the gas puffer.
摘要:
The present invention provides a method for rapid solution capture purification of nucleic acids for subsequent analysis by electrospray mass spectrometry which is efficient and cost-effective relative to existing methods. The present invention also provides for kits useful for practicing rapid solution capture of nucleic acids so that purified samples are in condition for analysis by electrospray mass spectrometry.
摘要:
The present invention provides a method for rapid solution capture purification of nucleic acids for subsequent analysis by electrospray mass spectrometry which is efficient and cost-effective relative to existing methods. The present invention also provides for kits useful for practicing rapid solution capture of nucleic acids so that purified samples are in condition for analysis by electrospray mass spectrometry.
摘要:
The present invention provides methods for rapid forensic investigations by identification of bioagents associated with biowarfare and acts of terrorism or crime. The methods are also useful for epidemiological investigations by genotyping of bioagents.
摘要:
The methods described herein generally relate to characterization of large analytes, such as biomolecules, by molecular mass analysis. Specifically, the methods are directed to molecular mass analysis of singly- or multiply-charged ions by selective ion filtering carried out by a digital thresholding process.
摘要:
Polynucleotides comprising molecular interaction sites of 16S rRNA that have particular secondary structure are provided. Methods of using such polynucleotides to screen, virtually or actually, combinatorial libraries of compounds that bind thereto are also provided. Method of modulating the activity of 16S rRNA by contacting 16S rRNA or prokaryotic cells containing the same with a compound identified by such virtual or actual screening are also provided.
摘要:
The present invention provides methods for the determination of the structure of biomolecular targets, as well as the site and nature of the interaction between ligands and biomolecular targets. The present invention also provides methods for the determination of the relative affinity of a ligand for the biomolecular target it interacts with. Also provided are methods for screening ligand or combinatorial libraries of compounds against one or more than one biological target molecules. The methods of the invention also allow determination of the relative binding affinity of combinatorial and other compounds for a biomolecular target. The present invention further provides methods for the use of mass modifying tags for screening multiple biomolecular targets. In a preferred embodiment, ligands which have great specificity and affinity for molecular interaction sites on biomolecules, especially RNA can be identified. In preferred embodiments, such identification can be made simultaneously with libraries of ligands.
摘要:
The present invention relates generally to the field of investigational bioinformatics and more particularly to secondary structure defining databases. The present invention further relates to methods for interrogating a database as a source of molecular masses of known bioagents for comparing against the molecular mass of an unknown or selected bioagent to determine either the identity of the selected bioagent, and/or to determine the origin of the selected bioagent. The identification of the bioagent is important for determining a proper course of treatment and/or irradication of the bioagent in such cases as biological warfare. Furthermore, the determination of the geographic origin of a selected bioagent will facilitate the identification of potential criminal identity.