Abstract: The invention relates to new Streptococcal proteases designated IgdE which display IgG degrading cysteine protease activity. The invention further relates to in vitro methods of cleaving IgG using the described Streptococcal proteases, using the methods to generate Fc and Fab fragments, and using the methods to detect IgG.

Abstract: The present invention relates to a novel endoprotease, mutants thereof having binding but lacking or having reduced hydrolyzing activity, and use in methods of studying and isolating O-linked glycoproteins.

Abstract: The invention provides an endoglycosidase, referred to as EndoS49 and having the amino acid sequence of SEQ ID NO: 1. EndoS49 was isolated from Streptococcus pyogenes strain NZ131 and is a homolog of EndoS. EndoS49 has specific endoglycosidase activity on native IgG and cleaves a larger variety of Fc glycans than EndoS. A mutant thereof where the glutamic acid at position 186 of SEQ ID NO: 1 was substituted was produced: said mutant lacks endoglycosidase activity but is capable of binding to IgG. Methods using EndoS49, deletions thereof and said mutant, especially for assessing glycosylation of IgG or for isolating IgG are disclosed.

Abstract: The present invention relates to methods for analysing molecules comprising immunoglobulin Fc regions for the presence or absence of high-mannose glycans, and to for carrying out such methods.

Abstract: The invention provides an endoglycosidase, referred to as EndoS49 and having the amino acid sequence of SEQ ID NO: 1. EndoS49 was isolated from Streptococcus pyogenes strain NZ131 and is a homolog of EndoS. EndoS49 has specific endoglycosidase activity on native IgG and cleaves a larger variety of Fc glycans than EndoS. A mutant thereof where the glutamic acid at position 186 of SEQ ID NO: 1 was substituted was produced: said mutant lacks endoalvcosidase activity but is capable of binding to IgG. Methods using EndoS49, deletions thereof and said mutant, especially for assessing glycosylation of IgG or for isolating IgG are disclosed.

Abstract: A nano sized particle for in vitro or ex vivo biomolecule delivery to cell cultures through heat induced endosomal release comprising a superparamagnetic core coated in a heat sensitive coating, comprising membrane disruptive components and binding sites for attachment of biomolecules and markers to be delivered is provided. A method is provided for introducing the release effect of a plurality of said biomolecule and endosomal disrupture molecules by applying an alternating field to a cell culture harboring the particle described by the invention.

Abstract: The inventions provides methods and kits for the dissociation of Fc?-receptor-IgG complexes, and methods and kits for the isolation of IgG and Fc and Fab fragments of IgG.

Abstract: A protein from Streptococcus pyogenes, serotype Ml has been characterized. This protein, called protein SIC, plays a role in S. pyogenes pathogenicity and virulence. It inhibits hemolysis by interacting with the plasma proteins clusterin, and members of the cystatin protein super family such as histidine rich glycoprotein (HRG). The protein, comprises at least one of the following partial amino acid sequences: (a) glu thr tyr thr ser arg asn phe; (b) asp trp ser gly asp asp trp pro glu asp asp trp; Cc) arg ser gly val gly leu ser gln tyr gly trp ser; (d) trp ser ser asp lys lys asp glu thr glu asp lys thr; (e) gly thr gly tyr glu lys arg asp asp trp gly gly pro gly; (f) lys arg asp asp trp arg gly pro gly his ile pro lys pro. The protein and antibodies specific for the protein can be used in analytical procedures for determining the presence of virulent Streptococcus pyo genes in a sample. The protein can also be used in vaccine compositions.

Abstract: A protein from Streptococcus pyogenes, serotype M1 has been characterized. This protein, called protein SIC, plays a role in S. pyogenes pathogenicity and virulence. It inhibits hemolysis by interacting with the plasma proteins clusterin, and members of the cystatin protein super family such as histidine rich glycoprotein (HRG). The protein comprises at least one of the following partial amino acid sequences: (a) glu thr tyr thr ser arg asn phe; (b) asp trp ser gly asp asp trp pro glu asp asp trp; (c) arg ser gly val gly leu ser gln tyr gly trp ser; (d) trp ser ser asp lys lys asp glu thr glu asp lyr thr; (e) gly thr gly tyr glu lys arg asp asp trp gly gly pro gly; and (f) lys arg asp asp trp arg gly pro gly his ile pro lys pro. The protein and antibodies specific for the protein can be used in analytical procedures for determining the presence of virulent Streptococcus pyogenes in a sample. The protein can also be used in vaccine compositions.