摘要:
The invention concerns rhodamine derivatives of the general formulae in which Ca-Cd each denote a C atom, and Ca and Cb as well as Cc and Cd are either linked together by a single bond or by a double bond; X1 to X16 denote independently of one another halogen, sulfonic acid, hydrogen or an alkyl residue with 1-20 C atoms in which the alkyl residue can be substituted with one or several halogen or sulfonic acid residues; R1 and R2 are either identical or different and denote either hydrogen, alkyl with 1-20 C atoms, polyoxyhydrocarbyl units, phenyl or phenylalkyl with 1-3 carbon atoms in the alkyl chain in which the alkyl and/or phenyl residues can be substituted by one or several hydroxy, halogen, sulfonic acid, amino, carboxy or alkoxycarbonyl groups where alkoxy can have 1-4 carbon atoms, R1 contains at least one activatable group, R2 and X4 can be optionally linked together via a bridge composed of 0-2 C atoms. In contrast to the prior art, these compounds are characterized in that A1, A2 and A3 can independently of one another denote hydrogen, cyano, halogen and sulfonic acid; B1 denotes either halogen, cyano or hydrogen; B2 denotes hydrogen, amide, halogen and an alkyl residue with 1-20 C atoms. In addition the invention concerns activated rhodamine derivatives, correspondingly conjugated biomolecules and their use in diagnostic systems.
摘要:
The invention is directed to a system for performing multi-color real time PCR, comprising a flexible real time PCR instrument and a specific composition or reaction mixture for performing multiplex PCR: In particular, the present invention is directed to a composition or reaction mixture which comprises at least 3, preferably 4-5 and most preferably exactly 4 pairs of FRET hybridization probes. Each pair of said hybridization probes consists of a FRET donor probe carrying a FRET donor moiety and a FRET acceptor probe carrying a FRET acceptor moiety having an emission maximum between 550 and 710 nm.
摘要:
Compositions, reaction mixtures, and kits, as well as methods for their use, comprising a pair of FRET hybridization probes hybridizing adjacently to a target nucleic acid sequence, each hybridization probe comprising (i) a nucleotide sequence entity which is substantially complementary to the sequence of the target nucleic acid, (ii) a fluorescent entity, being either a FRET donor entity or a FRET acceptor entity, and (iii) a spacer entity connecting the nucleotide sequence entity and the fluorescent entity. The intensity of fluorescence emission from the FRET donor entity and from the FRET acceptor entity is not substantially affected by quenching activity of nucleotide residues present in the sequence of the target nucleic acid or in the nucleotide sequence entities of the hybridization probes.
摘要:
The invention is directed to a pair of FRET hybridization probes consisting of a first oligonucleotide carrying a FRET donor entity and a second oligonucleotide carrying a FRET acceptor entity, wherein said first oligonucleotide carrying the donor fluorescent entity is carrying at least one second entity, said second entity being a compound which is capable of quenching fluorescence emission of said donor fluorescent entity. In addition, the invention is directed to methods of using the same.
摘要:
The invention is directed to a system for performing multi-color real time PCT, comprising a flexible real time PCT instrument and a specific composition or reaction mixture for performing multiplex PCR: In particular, the present invention is directed to a composition or reaction mixture which comprises at least 3, preferably 4-5 and most preferably exactly 4 pairs of FRET hybridization probes. Each pair of said hybridization probes consists of a FRET donor probe carrying a FRET donor moiety and a FRET acceptor probe carrying a FRET acceptor moiety having an emission maximum between 550 and 710 nm.
摘要:
The invention is directed to a system for performing multi-color real time PCT, comprising a flexible real time PCT instrument and a specific composition or reaction mixture for performing multiplex PCR: In particular, the present invention is directed to a composition or reaction mixtuer which comprises at least 3, preferably 4-5 and most preferably exactly 4 pairs of FRET hybridization probes. Each pair of said hybridization probes consists of a FRET donor probe carrying a FRET donor moiety and a FRET acceptor probe carrying a FRET acceptor moiety having an emission maximum between 550 and 710 nm.
摘要:
Disclosed are pyridinyl-isoquinoline-dione derivatives, methods of producing these derivatives, conjugates comprising the pyridinyl-isoquinoline dione derivatives and (i) a solid support, or (ii) a biomolecule, methods of producing these conjugates as well as the use of these conjugates as quenchers in fluorescence resonance energy transfer (FRET).
摘要:
A method and reagent for detecting an analyte by a redox reaction and a fluorimetric determination, is disclosed. The method comprises contacting a sample containing the analyte with a detection reagent which contains a compound of the general formula Q-F as a fluorimetric redox indicator, wherein Q is a quencher group and F is a fluorophore group.
摘要:
The present invention relates to novel chemiluminescent compounds, to a method for synthesizing these compounds, to derivatives and conjugates comprising these compounds, to the use of these compounds or conjugates thereof in chemiluminescence based assays, especially in immunoassays.
摘要:
Compounds of the general formula III, ##STR1## in which R represents ##STR2## and in which R.sub.1 and R.sub.2 are the same or different and represent hydrogen or straight-chained or branched lower alkyl C.sub.1 -C.sub.6, and X represents a cleavable group, at least one of the groups R.sub.4 or R.sub.5 represents a group that stabilizes the dioxetan structure and at most one of the groups R.sub.4 or R.sub.5 represents hydrogen. These compounds can be used as substrates in immunological assays and in DNA diagnostics using activating agents for the formation of colour.