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MSST0017 Sigma-Aldrich

SILuProt IL6 Interleukin 6 human

recombinant, expressed in HEK 293 cells, SIL MS Protein Standard, 13C- and 15N-labeled

Synonym: B-cell stimulatory factor 2 (BSF-2), CTL differentiation factor (CDF), Hybridoma growth factor, IL-6, Interferon beta-2 (IFN-beta-2)



Related Categories Biochemicals and Reagents, Proteins and Derivatives, SILuProt Protein Standards for Quantitative Mass Spectrometry More...
Quality Level   200
biological source   human
recombinant   expressed in HEK 293 cells
assay   98% (SDS-PAGE)
form   lyophilized powder
potency   ≥98% Heavy amino acids incorporation efficiency by MS
application(s)   mass spectroscopy (MS): suitable
suitability   suitable for mass spectrometry (standard)
UniProt accession no.   P05231
storage temp.   −20°C
Gene Information   human ... IL6(3569)


General description

SILu Prot IL-6 is a recombinant, stable isotope-labeled human IL-6 which incorporates [13C6, 15N4]-Arginine and [13C6, 15N2]-Lysine. Expressed in human 293 cells, it is designed to be used as an internal standard for bioanalysis of IL-6 in mass-spectrometry. SILu Prot IL-6 is a monomer of 183 amino acids, with a molecular weight of ~21 kDa.

Suggested Quantitative Analysis Parameters
(MRM settings provided for three suggested peptides)

Biochem/physiol Actions

IL-6 is an abundant cytokine, which is crucial for leukocyte and endothelial cell activation. IL-6 is one of the major cytokines that are implicated clinically as biomarkers in ACS (Acute Coronary Syndrome). Its pathophysiological contribution to ACS is the induction of acute-phase response. Patients with ACS have increased circulating levels of IL-6 compared with those patients who have stable angina. Among patients with unstable angina, an increase in IL-6 levels that occurred 48 hours after admission compared with the admission value was associated with the combined end point of death, myocardial infarction (MI), or refractory angina. High levels of IL-6 are also related to cardiovascular disease, heart attack, and stroke.



Physical form

Supplied as a lyophilized powder containing phosphate buffered saline.

Legal Information

This product is licensed under U.S. Patent No. 7,396,688 and foreign counterparts from E. I. du Pont de Nemours and Company. The purchase of this product conveys to the buyer the nontransferable right to use the purchased amount of the product for research and development only, including services for a third party for consideration. The buyer cannot sell or otherwise transfer this product, its components or materials made using this product or its components to a third party. Information about licenses for excluded uses is available from: E. I. du Pont de Nemours and Company; Attn: Associate Director, Commercial Development; DuPont Experimental Station E268; 200 Powdermill Rd.; Wilmington, DE 19803; 1-877-881-9787 (voice), 1-302-695-1437 (fax), licensing@dupont.com.

SILu is a trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles

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