Tryptic Peptides
The need for absolute quantitation of protein expression levels in biological samples is of major importance in proteomics. The simplest and most cost-effective method of protein quantification involves the use of peptides containing amino acids incorporating heavy stable isotopes.
By using stable-labelled versions of tryptic peptides as internal standards, it is possible to directly quantify protein levels in a digested sample via mass spectrometry.
We supply heavy and light versions of common tryptic peptides ready to use in 1x 25 nmol tubes as detailed below:
If your desired tryptic peptide is not listed please refer to our custom synthesis page and request a custom peptide synthesis quotation.
Showing 193–208 of 233 results
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Tau (260–267) HeavyIGSTENL-[U-13C6,15N2-Lys]-acid
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Tau (260–267) LightIGSTENLK-acid
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Tb-alpha HeavyVDTGAPNI-[V]-SR-acid
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Tb-epsilon HeavyDHGISY-[L]-K-acid
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Thymosin β-4 HeavyNPL-[U-13C5,15N-Pro]-SKET-I-EQE-[U-13C6,15N2-Lys]-acid
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TIT Ubiquitin (12-27) Heavy
TITTITLEVEPSDTIENV-[U-13C5,15N2-Lys]-acid
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TIT Ubiquitin (12-27) Light
TITTITLEVEPSDTIENVK-acid
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Ubiquitin (12-27) LightTITLEVEPSDTIENVK-acid
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Ubiquitin (12-27) HeavyTITLEVEPSDTIENV-[U-13C6,15N2-Lys]-acid
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Ubiquitin (64-72) HeavyESTLHLVL-[U-13C6,15N4-Arg]-acid
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Ubiquitin (64-72) LightESTLHLVLR-acid
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Ubiquitin K11 Heavy
TLTG-[K(GG)]-TITLEVEPSDTIENV-[U-13C6 15N2-Lys]-acid
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Ubiquitin K11 Light
TLTG-[K(GG)]-TITLEVEPSDTIENVK-acid
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Ubiquitin K27 Heavy
TITLEVEPSDTIENV-[K(GG)]-A-[U-13C6 15N2-Lys]-acid
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Ubiquitin K27 Light
TITLEVEPSDTIENV-[K(GG)]-AK-acid
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Ubiquitin K29 Heavy
A-[K(GG)]-IQD-[U-13C6 15N2-Lys]-acid
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