Abstract: The present disclosure is directed to compositions and methods related to an alpha sKlotho variant or fragment, in which 1 to up to about 20 amino acids have been deleted from the C-terminus, optionally also having mutations at V563 and/or K795. The present disclosure also pertains to an alpha sKlotho polypeptide variant or fragment, having mutations at V563 and/or K795, wherein the polypeptide variant or fragment is full-length, or optionally 1 to up to about 20 amino acids have been deleted from the C-terminus. The present disclosure also pertains to fusion polypeptides comprising: (a) an alpha sKlotho, in which 1 to up to about 20 amino acids have been deleted from the C-terminus, optionally also having mutations at V563 and/or K795; (b) a linker; and (c) FGF23, optionally having a mutation at R179, C206 and/or C244, or (c) serum albumin.

Abstract: The present disclosure is directed to compositions and methods related to an alpha sKlotho variant or fragment, in which 1 to up to about 20 amino acids have been deleted from the C-terminus, optionally also having mutations at V563 and/or K795. The present disclosure also pertains to an alpha sKlotho polypeptide variant or fragment, having mutations at V563 and/or K795, wherein the polypeptide variant or fragment is full-length, or optionally 1 to up to about 20 amino acids have been deleted from the C-terminus. The present disclosure also pertains to fusion polypeptides comprising: (a) an alpha sKlotho, in which 1 to up to about 20 amino acids have been deleted from the C-terminus, optionally also having mutations at V563 and/or K795; (b) a linker; and (c) FGF23, optionally having a mutation at R179, C206 and/or C244, or (c) serum albumin.

Abstract: The present disclosure is directed to compositions and methods related to an alpha sKlotho variant or fragment, in which 1 to up to about 20 amino acids have been deleted from the C-terminus, optionally also having mutations at V563 and/or K795. The present disclosure also pertains to an alpha sKlotho polypeptide variant or fragment, having mutations at V563 and/or K795, wherein the polypeptide variant or fragment is full-length, or optionally 1 to up to about 20 amino acids have been deleted from the C-terminus. The present disclosure also pertains to fusion polypeptides comprising: (a) an alpha sKlotho, in which 1 to up to about 20 amino acids have been deleted from the C-terminus, optionally also having mutations at V563 and/or K795; (b) a linker; and (c) FGF23, optionally having a mutation at R179, C206 and/or C244, or (c) serum albumin.

Abstract: The present invention provides assays for detecting ADP, GDP and inorganic phosphate. These assays can be used directly to detect the presence of ADP, GDP and inorganic phosphate or can be used as part of a number of methods for identifying candidate agents that bind to a target protein or serve as modulators of the biological activity of a target protein.

Abstract: The present invention provides assays for detecting ADP, GDP and inorganic phosphate. These assays can be used directly to detect the presence of ADP, GDP and inorganic phosphate or can be used as part of a number of methods for identifying candidate agents that bind to a target protein or serve as modulators of the biological activity of a target protein.

Abstract: The present invention provides assays for detecting ADP, GDP and inorganic phosphate. These assays can be used directly to detect the presence of ADP, GDP and inorganic phosphate or can be used as part of a number of methods for identifying candidate agents that bind to a target protein or serve as modulators of the biological activity of a target protein.

Abstract: The present invention provides assays for detecting ADP, GDP and inorganic phosphate. These assays can be used directly to detect the presence of ADP, GDP and inorganic phosphate or can be used as part of a number of methods for identifying candidate agents that bind to a target protein or serve as modulators of the biological activity of a target protein.