Abstract: Glycan-binding proteins, and compositions thereof, are generally described, including methods of making and using such proteins. The proteins may include scaffolds based on easily evolvable DNA-binding proteins, with binding sites able to specifically bind to mono- or disaccharides, such as monosaccharide-binding determinants, disaccharide-binding determinants, more complex carbohydrates, etc. In certain aspects, a protein may be generated starting from a small DNA-binding protein, such as Sso7d. Such glycan-binding proteins may have numerous applications, including in enzyme-linked immunosorbent assays (ELISAs), glycan characterization, cell selection, flow cytometry, histology, imaging, arrays, affinity purification, enzyme-linked visualization, binding to a target for pharmaceutical purposes, etc.

Abstract: Glycan-binding proteins, and compositions thereof, are generally described, including methods of making and using such proteins. The proteins may include scaffolds based on easily evolvable DNA-binding proteins, with binding sites able to specifically bind to mono- or disaccharides, such as monosaccharide-binding determinants, disaccharide-binding determinants, more complex carbohydrates, etc. In certain aspects, a protein may be generated starting from a small DNA-binding protein, such as Sso7d. Such glycan-binding proteins may have numerous applications, including in enzyme-linked immunosorbent assays (ELISAs), glycan characterization, cell selection, flow cytometry, histology, imaging, arrays, affinity purification, enzyme-linked visualization, binding to a target for pharmaceutical purposes, etc.

Abstract: Glycan-binding proteins, and compositions thereof, are generally described, including methods of making and using such proteins. The proteins may include scaffolds based on easily evolvable DNA-binding proteins, with binding sites able to specifically bind to mono- or disaccharides, such as monosaccharide-binding determinants, disaccharide-binding determinants, more complex carbohydrates, etc. In certain aspects, a protein may be generated starting from a small DNA-binding protein, such as Sso7d. Such glycan-binding proteins may have numerous applications, including in enzyme-linked immunosorbent assays (ELISAs), glycan characterization, cell selection, flow cytometry, histology, imaging, arrays, affinity purification, enzyme-linked visualization, binding to a target for pharmaceutical purposes, etc.

Abstract: The present invention generally relates to assays of enzymes responsible for phosphoregulation including kinases (such as protein kinases, which mediate protein and peptide phosphorylation) and phosphatases (such as protein phosphatases, which mediate protein and peptide dephosphorylation). Certain aspects of the invention use lanthanide ions such as europium ions that exhibit chelation-enhanced luminescence. Phosphorylation of a peptide by a kinase may cause a complex to form between the lanthanide ion, the phosphate group, and a reporter group such as a hydroxyquinoline, which results in luminescence when in the complexed state. Thus, in certain embodiments, determination of luminescence may be indicative of kinase activity. Certain embodiments also include the use of substrates for detection of phosphatase activity, where dephosphorylation results in a loss of signal assay.

Abstract: Disclosed are metal-binding analytical reagents that exhibit chelation-enhanced fluorescence (CHEF) upon binding to Mg2+. Also disclosed are methods of using the reagents for detecting the presence of or quantifying the activity of individual kinases or groups of kinases in a sample.

Abstract: The present invention generally relates to assays of enzymes responsible for phosphoregulation including kinases (such as protein kinases, which mediate protein and peptide phosphorylation) and phosphatases (such as protein phosphatases, which mediate protein and peptide dephosphorylation). Certain aspects of the invention use lanthanide ions such as europium ions that exhibit chelation-enhanced luminescence. Phosphorylation of a peptide by a kinase may cause a complex to form between the lanthanide ion, the phosphate group, and a reporter group such as a hydroxyquinoline, which results in luminescence when in the complexed state. Thus, in certain embodiments, determination of luminescence may be indicative of kinase activity. Certain embodiments also include the use of substrates for detection of phosphatase activity, where dephosphorylation results in a loss of signal assay.

Abstract: Methods of forming, dissolving, and functionalizing an extracellular matrix gel on demand based on cross-linking, modification, and dissolution of hydrogels using transpeptidase (e.g. sortase) are disclosed. Also provided are hydrogels comprising one or more macromers crosslinked to a mixture of peptides, wherein all or a portion of the peptides in the mixture comprise a recognition motif cleavable by a transpeptidase (e.g., sortase).

Abstract: Peptidyl sensors comprise a metal-binding peptide and one or two kinase recognition sequences with a hydroxyamino acid that can be phosphorylated in the presence of a kinase.

Abstract: The present invention generally relates to environment-sensitive fluorophores, including environment-sensitive fluorophores for reporting protein/protein and peptide/protein interactions. In one aspect, the present invention is directed to compounds and salts thereof, compositions and methods useful in determining biological interactions. In some cases, the compounds of the present invention are environment-sensitive fluorophores that have spectroscopic behavior that may depend on factors such as the physicochemical properties of the surrounding environment. The compounds of the present invention can be used, in certain embodiments, to monitor ions, small molecules, and biological processes such as protein folding, protein-protein interactions and phosphorylation events.

Abstract: The present invention generally relates to compositions and methods for determining kinase activity. In some cases, the compositions comprise a triazole heterocycle. In some embodiments, the compositions comprise a quinoline moiety. In one aspect, the present invention is directed to compositions that undergo chelation-enhanced fluorescence (CHEF). In some cases, the compositions may have fluorescence emission spectra with peak maxima greater than 490 nm. The compositions of the present invention can be used, in certain embodiments, to detect phosphorylated substrates and biological processes such as phosphorylation events.

Abstract: Peptidyl sensors comprise a metal-binding peptide and one or two kinase recognition sequences with a hydroxyamino acid that can be phosphorylated in the presence of a kinase.

Abstract: Peptidyl sensors comprise a metal-binding peptide and one or two kinase recognition sequences with a hydroxyamino acid that can be phosphorylated in the presence of a kinase.

Abstract: The present invention generally relates to compositions and methods for determining kinase activity. In some cases, the compositions comprise a triazole heterocycle. In some embodiments, the compositions comprise a quinoline moiety. In one aspect, the present invention is directed to compositions that undergo chelation-enhanced fluorescence (CHEF). In some cases, the compositions may have fluorescence emission spectra with peak maxima greater than 490 nm. The compositions of the present invention can be used, in certain embodiments, to detect phosphorylated substrates and biological processes such as phosphorylation events.

Abstract: The present invention provides a sensor and methods for determining kinase activity.

Abstract: The present invention generally relates to environment-sensitive fluorophores, including environment-sensitive fluorophores for reporting protein/protein and peptide/protein interactions. In one aspect, the present invention is directed to compounds and salts thereof, compositions and methods useful in determining biological interactions. In some cases, the compounds of the present invention are environment-sensitive fluorophores that have spectroscopic behavior that may depend on factors such as the physicochemical properties of the surrounding environment. The compounds of the present invention can be used, in certain embodiments, to monitor ions, small molecules, and biological processes such as protein folding, protein-protein interactions and phosphorylation events.

Abstract: The present invention provides fluorescent compounds of formula (I) and methods monitoring protein-protein interactions.

Abstract: The present invention provides fluorescent compounds of formula (I) and methods monitoring protein-protein interactions.

Abstract: The present invention provides novel fluorophore compounds.

Abstract: The present invention provides a sensor and methods for determining kinase activity.

Abstract: Peptidyl sensors comprise a metal-binding peptide and one or two kinase recognition sequences with a hydroxyamino acid that can be phosphorylated in the presence of a kinase.