SILu™Lite CRP C-reactive Protein human
SIGMA/MSST0022 - recombinant, expressed in HEK 293 cells, MS Protein Standard
Synonym: PTX1; pentaxin; pentraxin
Product Type: Chemical
SILuProt products are stable isotope-labeled full length proteins designed to be used as mass spectrometry internal standards for quantitative proteomics. Introduction of an internal SILuProt standard at the beginning of the MS workflow minimizes variations in quantification due to protein extraction, fractionation, enrichment, proteolysis and analysis
| assay | ≥98% (SDS-PAGE) |
| biological source | human |
| form | liquid |
| Quality Level | 200  |
| recombinant | expressed in HEK 293 cells |
| storage temp. | −20°C |
| suitability | suitable for mass spectrometry (internal calibrator) |
| technique(s) | mass spectrometry (MS): suitable |
| UniProt accession no. | P02741  |
| Biochem/physiol Actions: | CRP is a hepatically derived pentraxin. It exists mainly as a pentamer in a cyclic structure with 5 identical 23-kD subunits in the blood. In addition to its role as an "acute phase" protein or first-line defense molecule against pathogenic organisms, baseline levels of CRP correlate positively to adverse cardiovascular events. CRP is therefore being considered a “risk factor” for cardiovascular disease. In humans, treatment with statin therapy reduces levels of both LDL-C and CRP, and concurrently there is a reduction in the number of cardiovascular events. A recent study suggests that patients with elevated basal levels of CRP are at an increased risk of diabetes, in addition to cardiovascular disease. A study of over 700 nurses showed that those in the highest quartile of trans fat consumption had blood levels of CRP that were 73% higher than those in the lowest quartile. |
| General description: | SILu™Lite CRP is a recombinant human protein expressed in human 293 cells. It is a protein consisting of 226 amino acids (including a C-terminal polyhistidine and FLAG® tags), with a calculated molecular weight of ~25 kDa. SILu™Lite CRP is an analytical standard designed to be used as starting material for preparation of calibrators and controls in LC-MS applications. Suggested Quantitative Analysis Parameters (MRM settings provided for three suggested peptides ) |
| Legal Information: | FLAG is a registered trademark of Merck KGaA, Darmstadt, Germany |
| Legal Information: | SILu is a trademark of Sigma-Aldrich Co. LLC |
| Other Notes: | QTDMSRKAFVFPKESDTSYVSLKAP |
| Physical form: | Supplied as a solution of phosphate buffered saline with 25% glycerol. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥98% (SDS-PAGE) |
| Storage Temp. | −20°C |
| UNSPSC | 23201100 |