3'-TAMRA CPG

3'-TAMRA CPG is a TAMRA-labeled controlled pore glass (CPG) solid support designed for preparing fluorescently labeled oligonucleotides. In nucleic acid workflows, the immobilized dye enables straightforward incorporation of a TAMRA reporter at the 3′ end during automated DNA synthesis, supporting fluorescence readouts for probe and primer construction. Researchers use it to generate sequence-defined oligos for imaging, hybridization assays, and fluorescence-based nucleic acid analysis where a stable covalent dye handle is required.

1. 3′-End Oligonucleotide Labeling

3'-TAMRA CPG is used by molecular biology and chemical biology groups to introduce a TAMRA fluorophore at the 3′ terminus of DNA oligonucleotides during solid-phase synthesis. This positioning is commonly leveraged for fluorescence hybridization probes, labeled primers, and assay reagents where end-labeling preserves accessibility of the internal sequence for binding to complementary targets. The CPG support format fits standard automated oligonucleotide synthesis workflows, enabling consistent construction of fluorescent nucleic acid reagents for downstream characterization and assay development.

2. Fluorescent Hybridization Probes

3'-TAMRA CPG supports the development of fluorescence-based nucleic acid hybridization probes in which TAMRA serves as a donor-like reporter for monitoring target binding through changes in fluorescence upon hybridization or proximity effects. Molecular imaging and nucleic acid analysis labs use 3′-TAMRA-labeled oligos to track hybrid formation in solution-based assays and to visualize nucleic acid interactions in microscopy-compatible formats where TAMRA's visible emission is practical. The dye's covalent attachment to the oligo end helps maintain signal localization to the probe strand during wash steps and assay handling.

3. Fluorescence Nucleic Acid Assays

3'-TAMRA CPG is frequently selected for building fluorescent oligonucleotide reagents used in assay development, including fluorescence readout components for nucleic acid quantification and workflow optimization in research settings. By enabling sequence-defined TAMRA labeling at the 3′ end, the reagent supports reproducible probe performance across batches of synthesized oligos, which is valuable for method development in genomics research and molecular diagnostics reagent prototyping. Teams using plate-based fluorescence instrumentation or gel-based nucleic acid workflows can incorporate the TAMRA-labeled oligos as trackable standards, primers, or probe elements to support assay design and validation experiments.