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 49–64 of 233 results
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Carbamoyl-phosphate synthase CPS1 LightAVNTLNEALEFAK-acid
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Carboxypeptidase E HeavySNAQGID -[U-13C6,15N-Leu]-NR-acid
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Cathepsin D (332-341) Heavy[U-13C5,15N-Val]-STLPAITLK-acid
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Cathepsin D (349-357) HeavyLSPEDYT-[U-13C6,15N-Leu]-K-acid
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cathepsin D (55-72) HeavyYSQA-[U-13C5,15N-Val]-PAVTEGPIPEVLK-acid
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CBL (167-180) HeavyGIFPSGLFQGDTF-[U-13C6,15N4-Arg]-acid
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CBL (598-612) Heavy
VPVSAPSSSDPWTG-[U-13C6,15N4-Arg]-acid
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CBL-B (22-37) HeavyILGIIDAIQDAVGPP-[U-13C6,15N2-Lys]-acid
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CBL-B (239-247) HeavyLFQPWGSIL-[U-13C6,15N4-Arg]-acid
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CBL-B (98-109) HeavyLAQLSENEYF-[U-13C6,15N2-Lys]-acid
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Cellulose synthase (857-870) Light [Populus tomentosa]AADDTEFGELYMVK-acid
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Cellulose synthase [Populus tomentosa] HeavyAPEFYFT-[L]-K -acid
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Cellulose synthase 4 (923-936) Light [Populus tomentosa]SADDAEFGELYLFK-acid
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Cellulose synthase 4 Light [Populus tomentosa]APEFYFTQK-acid
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Cellulose synthase LightFDGIDTHDR-acid
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Cellulose synthase Light [Populus tomentosa]ESGNQSTMASHLNDSQDVGIHAR-acid
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