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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

Product family

NameExcitation (nm)Emission (nm)Extinction coefficient (cm -1 M -1)Correction Factor (260 nm)Correction Factor (280 nm)
6-TAMRA cadaverine552578900000.320.178
6-TAMRA ethylenediamine552578900000.320.178
5(6)-TAMRA [5(6)-Carboxytetramethylrhodamine] *CAS 98181-63-6*552578900000.320.178
6-TAMRA, SE [6-Carboxytetramethylrhodamine, succinimidyl ester] *CAS#: 150810-69-8*552578900000.320.178
6-TAMRA Maleimide [Tetramethylrhodamine-6-maleimide] *CAS 174568-68-4*552578900000.320.178
6-TAMRA azide552578900000.320.178
6-TAMRA alkyne552578900000.320.178

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
Page updated on December 6, 2024

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Catalog Number6051
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Physical properties

Molecular weight

N/A

Solvent

MeCN

Spectral properties

Correction Factor (260 nm)

0.32

Correction Factor (280 nm)

0.178

Extinction coefficient (cm -1 M -1)

90000

Excitation (nm)

552

Emission (nm)

578

Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22

Storage

Freeze (< -15 °C); Minimize light exposure
UNSPSC12171501