Aminoallyl-dUTP-XX-ATTO-488

Aminoallyl-dUTP-XX-ATTO-488 is an aminoallyl-functionalized thymidine analog bearing an ATTO 488 fluorophore, designed for fluorescent nucleic acid labeling workflows where post-incorporation conjugation flexibility is required. In typical use, the aminoallyl handle enables downstream coupling chemistry to introduce additional reporters, affinity tags, or bioconjugation handles while ATTO 488 provides bright green fluorescence for imaging and detection. This reagent is commonly employed in nucleic acid staining, labeling, and probe-construction strategies for fluorescence-based assays.

1. Nucleic Acid Fluorescent Labeling

Aminoallyl-dUTP-XX-ATTO-488 is used to incorporate ATTO 488 into DNA or RNA during enzymatic synthesis, enabling fluorescent tracking of nucleic acids in molecular biology workflows. Researchers use it for labeling templates, probes, and assay reagents where the ATTO 488 signal provides straightforward readout for fluorescence microscopy, gel-based visualization, and fluorescence imaging of labeled nucleic acid samples. The aminoallyl functionality further supports workflows that require an additional conjugation step after incorporation, such as attaching capture moieties or secondary reporters to the labeled nucleic acid.

2. Fluorescence In Situ Hybridization

Aminoallyl-dUTP-XX-ATTO-488 is frequently selected for fluorescence in situ hybridization (FISH) probe development, where nucleic acid recognition is combined with robust fluorescent readout. In cytogenetics, microbial detection research, and cell biology studies, labeled probes prepared with this reagent allow visualization of specific nucleic acid sequences within fixed samples using standard fluorescence microscopy. The ATTO 488 emission supports green-channel imaging, while the aminoallyl handle is useful when probe workflows benefit from additional conjugation to improve probe architecture or to enable multistep probe preparation strategies.

3. DNA Microarray and Hybridization Probes

Aminoallyl-dUTP-XX-ATTO-488 supports the construction of fluorescent hybridization probes used for nucleic acid binding assays and array-based workflows. In research settings where probe immobilization or multicomponent labeling is required, the aminoallyl functionality can be leveraged to create additional conjugation points after probe synthesis, while the ATTO 488 fluorophore enables direct fluorescence readout of hybridization events. This makes the reagent relevant for developing labeled oligonucleotide probes and assay reagents used in fluorescence-based nucleic acid analysis platforms.

4. Click-Style Nucleic Acid Conjugation

Aminoallyl-dUTP-XX-ATTO-488 is also used in nucleic acid conjugation workflows that benefit from an orthogonal functional handle beyond the incorporated fluorophore. Researchers often incorporate the ATTO 488-labeled nucleotide into nucleic acid constructs and then use the aminoallyl group as a reactive site for subsequent derivatization, enabling attachment of additional chemical tags, linkers, or affinity groups. This approach is particularly useful when building multifunctional nucleic acid reagents for fluorescence imaging, pull-down experiments, or assay formats that require both a fluorescent label and a secondary conjugation handle.