Abstract: Described is the use of a mutation of at least one amino acid in the immunosuppressive domain of a HIV or SIV accessory protein, for modulating the immunosuppressive property of the protein.

Abstract: Mutated viral ENV proteins having mutations in the immunosuppressive domain (ISU) of the transmembrane subunit (TM) have decreased immunosuppressive activity with respect to the wild-type ENV protein. Pharmaceutical compositions that include the protein and nucleic acids coding for the protein are also disclosed.

Abstract: Mutated viral ENV proteins having mutations in the immunosuppressive domain (ISU) of the transmembrane subunit (TM) have decreased immunosuppressive activity with respect to the wild-type ENV protein. Pharmaceutical compositions that include the protein and nucleic acids coding for the protein are also disclosed.

Abstract: The present invention relates to a polypeptide having a sequence of 7 to 20 amino acid residues, which is capable of modulating the immunosuppressive properties of a viral protein or a fragment thereof, against the host in which it is expressed (immunosuppression-modulatory sequence) when it substitutes the homologous sequence of the viral protein or fragment, the polypeptide including the minimum following consensus amino acid sequence: X1Y9Y10Y11CY12X2 wherein, X1 and X2 are selected to impact on the immunosuppressive properties, and Y9 to Y12 represent variable amino acid residues.

Abstract: The invention relates to biosensors, methods for obtaining them and their use for detecting, assaying or locating, in direct immunofluorescence, a ligand such as an antigen or hapten, in a heterogeneous population. The biosensor includes (i) at least one fragment of a receptor which is protein in nature, capable of binding to a ligand via an active site, where at least one amino acid residues of the fragment located in the proximity of the active site is naturally present in the form of a cystein (Cys) residue, or is substituted with a Cys residue, and (ii) a fluorophore coupled to the Cys residue.

Abstract: The invention relates to biosensors, methods for obtaining them and their use for detecting, assaying or locating, in direct immunofluorescence, a ligand such as an antigen or hapten, in a heterogeneous population. The biosensor includes (i) at least one fragment of a receptor which is protein in nature, capable of binding to a ligand via an active site, where at least one amino acid residues of the fragment located in the proximity of the active site is naturally present in the form of a cystein (Cys) residue, or is substituted with a Cys residue, and (ii) a fluorophore coupled to the Cys residue.

Abstract: The invention relates to biosensors, methods for obtaining them and their use for detecting, assaying or locating, in direct immunofluorescence, a ligand such as an antigen or hapten, in a heterogeneous population. The biosensor includes (i) at least one fragment of a receptor which is protein in nature, capable of binding to a ligand via an active site, where at least one amino acid residues of the fragment located in the proximity of the active site is naturally present in the form of a cystein (Cys) residue, or is substituted with a Cys residue, and (ii) a fluorophore coupled to the Cys residue.

Abstract: Described is the use of a mutation of at least one amino acid in the immunosuppressive domain of a HIV or SIV accessory protein, for modulating the immunosuppressive property of the protein.

Abstract: The present invention relates to a polypeptide having a sequence of 7 to 20 amino acid residues, which is capable of modulating the immunosuppressive properties of a viral protein or a fragment thereof, against the host in which it is expressed (immunosuppression-modulatory sequence) when it substitutes the homologous sequence of the viral protein or fragment, the polypeptide including the minimum following consensus amino acid sequence: X1Y9Y10Y11CY12X2 wherein, X1 and X2 are selected to impact on the immunosuppressive properties, and Y9 to Y12 represent variable amino acid residues.

Abstract: The invention relates to biosensors, methods for obtaining them and their use fro detecting, assaying or locating, in direct immunofluorescence, a ligand such as an antigen or hapten, in a heterogeneous population. The biosensor includes (i) at least one fragment of a receptor which is protein in nature, capable of binding to a ligand via an active site, where at least one amino acid residues of the fragment located in the proximity of said active site is naturally present in the form of a cystein Cys residue, or is substituted with a Cys residue, and (ii) a fluorophore coupled to the Cys residue.

Abstract: The invention concerns biosensors, the method for obtaining them and their uses in particular for detecting, assaying or locating, in direct immunofluorescence, a ligand such as an antigen or a hapten, in a heterogeneous population. Said biosensors consist of (i) at least a protein-type receptor fragment, capable of binding with a suitable ligand via an active site and in which fragment, at least one of its amino acid residues, located in the proximity of said active site is naturally present in the form of a Cys residue or is substituted in Cys residue, and (ii) a fluorophore coupled with said Cys residue(s).