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MSQC2

Sigma-Aldrich

MS QCAL Peptide Mix

lyophilized powder

Synonym(s):

MS Qual/Quant QC Mix, universal MS platform standard

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.24

form

lyophilized powder

analyte chemical class(es)

amino acids, peptides, proteins

technique(s)

HPLC: suitable

application(s)

food and beverages

format

multi-component solution

shipped in

ambient

storage temp.

2-8°C

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General description

QCAL was designed using the QconCAT technology and recombinantly expressed in E. coli.  The parent protein sequence of QCAL is as follows:

MGALRVFDEFKPLVEEPQNLIRVFDEFKPLVKPEEPQNLIRVFDEFKPLVKPEEKPQNLIRVFDEFKPLVKPEEKPQNKPLIRVFKPDEFKPLVKPEEKPQNKPLIRVFKPDEFKPLVKPEEKPQNKPLIKPRVFDEFQPLVEEPQNLIRGVNDNEEGFFSARGGVNDNEEGFFSARGGVNDNEEGFFSARGGVNDNEEGFFSARGGGVNDNEEGFFSARGGGVNDNEEGFFSARGGGVNDNEEGFFSARGGGVNDNEEGFFSARGGGVNDNEEGFFSARGVNDNEEGFFSAKGGGVNDNEEGFFSARAVMDDFAAFVEKAVMMDDFAAFVEKAVMMMDDFAAFVEKGLVKFVVPRALELFRIGDYAGIKEALDFFARYLGYLEQLLRVLYPNDNFFEGKLFTFHADICTLPDTEKALVALVLVPRGSLEVLFQGPIEGRTENLYFQGDDDDKALVALVHHHHHH

QCAL was subsequently digested with trypsin to give a core mixture of 22 peptides.

Application

This product is optimized to assess platform characteristics, including:
  • Repeatability/Reproducibility between runs
  • System stability (drift, chromatography, signal intensity, sensitivity, etc.)
  • Inter- and intra- platform and lab comparisons
MSQC2 is intended to act as a universal MS platform standard, by providing several elements for calibration and performance assessment, such as instrument resolution and linearity of signal detection.

Features and Benefits

General

Complexity
  • Defined mixture gives confidence in your instruments analysis

Components

Each vial contains 25 μg of lyophilized peptides that are derived from trypsin digestion of the protein concatamer QCAL.

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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Julie M Pratt et al.
Nature protocols, 1(2), 1029-1043 (2007-04-05)
An important area of proteomics involves the need for quantification, whether relative or absolute. Many methods now exist for relative quantification, but to support biomarker proteomics and systems biology, absolute quantification rather than relative quantification is required. Absolute quantification usually
Claire E Eyers et al.
Journal of the American Society for Mass Spectrometry, 19(9), 1275-1280 (2008-07-05)
If proteome datasets are to be collated, shared, and merged for higher level proteome analyses, there is a need for generally accepted strategies and reagents for optimization and standardization of instrument performance. At present, there is no single protein or

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