MAK057 Sigma-Aldrich

Citrate Assay Kit

sufficient for 100 colorimetric or fluorometric tests

  •  NACRES NA.84



General description

Citrate is a key Tricarboxylic Acid (TCA) cycle intermediate formed by the addition of oxaloacetate to the acetyl group of acetyl-CoA. Citrate is transported out of the mitochondria via the citrate-malate shuttle and converted back to acetyl-CoA for fatty acid synthesis. Citrate is an allosteric modulator of both fatty acid synthesis via its actions on acetyl-CoA carboxylase and of glycolysis via its actions on phospho- fructokinase. Citrate metabolism and disposition can vary widely due to sex, age, and a variety of other factors including disease states. Cellular citrate levels are decreased in prostrate cancer cells and citrate levels may be a marker of prostrate cancer growth rate. The Citrate Assay Kit provides a simple, sensitive, and rapid means of quantifying citrate in a variety of samples.


Citrate Assay kit has been used to determine the concentration of citrate in samples.


Suitable for the measurement of citrate in a variety of samples including tissue and cells


Citrate concentration is determined by a coupled enzyme assay, which results in a colorimetric (570 nm)/ fluorometric (λex = 535/λem = 587 nm) product, proportional to the citrate present. Typical sensitivites of the Citrate Assay Kit are between 0.1 to 10 nmoles (2 μM-10 mM) of citrate in a variety of samples.

Safety & Documentation

Safety Information

NA 1993 / PGIII
Flash Point(F) 
188.6 °F
Flash Point(C) 
87 °C
Protocols & Articles


Fatty Acid Synthesis and Metabolism in Cancer Cells

Proliferatively active cells require fatty acids for functions such as membrane generation, protein modification, and bioenergetic requirements. These fatty acids are derived either from dietary sour...
BioFiles v7 n4
Keywords: Apoptosis, Cancer, Carboxylations, Catalysis, Citric Acid Cycle, Gene expression, Glycolysis, Metabolism, Oxidations, Phosphorylations

Peer-Reviewed Papers


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