Abstract: The present invention pertains to a mutated T7 RNA polymerase and its use, the T7 RNA polymerase being mutated at position 744, the glutamine (Q) being replaced by an amino acid selected from arginine (Q744R), leucine (Q744L) or proline (Q744P).

Abstract: A method of amplifying a nucleic acid of interest comprises (i) treating a biological sample chemically or enzymatically to permit conversion of one type of nucleic acid base to another type of base, (ii) purifying the treated biological sample before adding amplification primers and amplification reagents to the biological sample, (iii) adding the amplification primers and amplification reagents to the biological sample, each primer being constituted of three different types of bases and being specific to a converted nucleic acid of interest or to a nucleic acid that is complementary to the converted nucleic acid of interest, and (iv) amplifying the converted nucleic acid of interest provided that the nucleic acid of interest was present in the biological sample. In the method, amplification of contaminating nucleic acids is avoided by converting the one type of nucleic acid base to another type of base prior to adding the amplification reagents to the biological sample.

Abstract: The present invention pertains to a mutated T7 RNA polymerase and its use, the T7 RNA polymerase being mutated at position 744, the glutamine (Q) being replaced by an amino acid selected from arginine (Q744R), leucine (Q744L) or proline (Q744P).

Abstract: A method of amplification and/or of detection for removing contaminants in a liquid biological sample containing nucleic acids of interest to amplify, which includes treating the biological sample chemically or enzymatically to convert one type of base of the nucleic acids of interest to another type of base; adding amplification primers, intended for specifically amplifying said converted nucleic acids of interest, each primer being constituted of three different types of bases; adding to the biological sample, after these treatments, amplification reagents the primers previously synthesized; and placing the solution and the reagents in conditions permitting amplification and/or detection of the converted nucleic acids.

Abstract: The present invention relates to a method for detecting and/or identifying bacteria of the genus Staphylococcus, comprising the following steps: A. the nucleic acid material of the bacteria of the genus Staphylococcus is extracted, B. at least one target sequence of the nucleic acid material of the bacteria of the genus Staphylococcus is amplified using at least one amplification primer comprising at least 10 nucleotide motifs of SEQ ID No. 1 and/or at least one amplification primer comprising at least 10 nucleotide motifs of SEQ ID No. 2, in order to obtain amplicons of the target sequence, C. the presence of bacteria of the genus Staphylococcus is determined by detecting said amplicons.

Abstract: The present invention relates to a method for detecting and/or identifying bacteria of the genus Staphylococcus, comprising the following steps: A. the nucleic acid material of the bacteria of the genus Staphylococcus is extracted, B. at least one target sequence of the nucleic acid material of the bacteria of the genus Staphylococcus is amplified using at least one amplification primer comprising at least 10 nucleotide motifs of SEQ ID No. 1 and/or at least one amplification primer comprising at least 10 nucleotide motifs of SEQ ID No. 2, in order to obtain amplicons of the target sequence, C. the presence of bacteria of the genus Staphylococcus is determined by detecting said amplicons.