6-TAMRA CPG *1000 Å*
The light-absorbing properties of TAMRA, and spectral overlap with several commonly used fluorophores - including FAM, HEX, TET and JOE, make it useful as a FRET acceptor for the dual labeled FRET probes such as Molecular Beacons. TAMRA has been used extensively for real-time PCR and other molecular diagnostic applications. Oligonucleotides can be labeled with TAMRA using two distinct methodologies. Under standard deprotection conditions, TAMRA is not sufficiently stable; the molecule degrades in the presence of ammonium hydroxide. If standard deprotection is required, the oligonucleotide is normally synthesized with an amino group at either the 3'-, or 5'-end and post-labeled with TAMRA succinimidyl ester. Oligonucleotides synthesized using UltraMILD monomers can also be labeled directly with TAMRA, either internally by substituting any suitable dT residue with TAMRA-dT-CE phosphoramidite, or at the 3'-end using 3'-TAMRA CPG support. Subsequent deprotection of the oligo using potassium carbonate in methanol adequately removes the base protecting groups, leaving the TAMRA intact. Alternatively the deprotection of 1:1:2 t-butylamine/methanol/water allows the use of regular monomers.
Spectrum
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Product family
Name | Excitation (nm) | Emission (nm) | Extinction coefficient (cm -1 M -1) | Correction Factor (260 nm) | Correction Factor (280 nm) |
6-TAMRA cadaverine | 552 | 578 | 90000 | 0.32 | 0.178 |
6-TAMRA ethylenediamine | 552 | 578 | 90000 | 0.32 | 0.178 |
5(6)-TAMRA [5(6)-Carboxytetramethylrhodamine] *CAS 98181-63-6* | 552 | 578 | 90000 | 0.32 | 0.178 |
6-TAMRA, SE [6-Carboxytetramethylrhodamine, succinimidyl ester] *CAS#: 150810-69-8* | 552 | 578 | 90000 | 0.32 | 0.178 |
6-TAMRA Maleimide [Tetramethylrhodamine-6-maleimide] *CAS 174568-68-4* | 552 | 578 | 90000 | 0.32 | 0.178 |
6-TAMRA azide | 552 | 578 | 90000 | 0.32 | 0.178 |
6-TAMRA alkyne | 552 | 578 | 90000 | 0.32 | 0.178 |
References
View all 1 references: Citation Explorer
Fluorescent DNA: the development of 7-deazapurine nucleoside triphosphates applicable for sequencing at the single molecule level
Authors: Seela F, Feiling E, Gross J, Hillenkamp F, Ramzaeva N, Rosemeyer H, Zulauf M.
Journal: J Biotechnol (2001): 269
Authors: Seela F, Feiling E, Gross J, Hillenkamp F, Ramzaeva N, Rosemeyer H, Zulauf M.
Journal: J Biotechnol (2001): 269
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