The present invention concerns the preparation of solutions, particularly for implementing analytical methods, in particular by spectrometry, particularly for producing standard solutions which are useful, for example, for calibrating spectrometers or for implementing diagnostic methods. It allows the implementation of an easy process for preparing such standard solutions.

Isolated polypeptides are disclosed comprising an amino acid sequence encoding a monomer of a fibrous polypeptide attached to a heterologous polysaccharide binding domain. Composites comprising same, methods of generating same and uses thereof are all disclosed.

Isolated polypeptides are disclosed comprising an amino acid sequence encoding a monomer of a fibrous polypeptide attached to a heterologous polysaccharide binding domain. Composites comprising same, methods of generating same and uses thereof are all disclosed.

The present invention relates to eukaryotic cells for producing molecules having an atypical fucose analog on their glycomoieties and/or amino acids. It also relates to methods for producing molecules having an atypical fucose analog on their glycomoieties and/or amino acids and to molecules obtainable by said methods. It further relates to methods for producing conjugates comprising molecules having an atypical fucose analog on their glycomoieties and/or amino acids and pharmaceutical active compounds and to conjugates obtainable by said methods. In addition, the present invention relates to specific conjugates.

The present invention relates to eukaryotic cells for producing molecules having an atypical fucose analog on their glycomoieties and/or amino acids. It also relates to methods for producing molecules having an atypical fucose analog on their glycomoieties and/or amino acids and to molecules obtainable by said methods. It further relates to methods for producing conjugates comprising molecules having an atypical fucose analog on their glycomoieties and/or amino acids and pharmaceutical active compounds and to conjugates obtainable by said methods. In addition, the present invention relates to specific conjugates.

An object of the present invention is to provide a polypeptide having a high binding capacity for an immunoglobulin kappa chain, and having excellent alkali stability, by modifying an amino acid sequence of an immunoglobulin-binding domain of Protein L derived from Peptostreptococcus magnus. A polypeptide having a high binding capacity for an immunoglobulin kappa chain, and having excellent alkali stability can be obtained by substituting specific lysine residues in an immunoglobulin-binding domain of Protein L derived from Peptostreptococcus magnus 3316 strain, with a basic amino acid or a hydroxyl group-containing amino acid.

An object of the present invention is to provide a polypeptide having a high binding capacity for an immunoglobulin kappa chain, and having excellent alkali stability, by modifying an amino acid sequence of an immunoglobulin-binding domain of Protein L derived from Peptostreptococcus magnus. A polypeptide having a high binding capacity for an immunoglobulin kappa chain, and having excellent alkali stability can be obtained by substituting specific lysine residues in an immunoglobulin-binding domain of Protein L derived from Peptostreptococcus magnus 3316 strain, with a basic amino acid or a hydroxyl group-containing amino acid.

The present invention relates to reagents comprising a substituted acyl borate or a substituted hydroxylamine, to a method of synthesizing a carrier-linked prodrug using said reagents and to carrier-linked prodrugs obtainable by said method.

The present invention provides a virus collection matrix, including: a porous gel or fibrous structure formed by a positively charged polymer material; and a plurality of ACE 2 receptors. The plurality of ACE 2 receptors are negatively charged, and distributed and covered on the surface of the porous gel or fibrous structure. The whole virus collection matrix is positively charged.

The present invention provides a virus collection matrix, including: a porous gel or fibrous structure formed by a positively charged polymer material; and a plurality of ACE 2 receptors. The plurality of ACE 2 receptors are negatively charged, and distributed and covered on the surface of the porous gel or fibrous structure. The whole virus collection matrix is positively charged.