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PhosphoSitePlus® Resource

  • Additional protein information
  • Analytical tools


Product Includes Quantity (with Count) Solution Color
JC-1 5 x 15 µg Red
CCCP 1 x 100 µl Yellow
Phosphate Buffered Saline (PBS-20X) 9808 1 x 25 ml Colorless

Product Description

Mitochondrial Membrane Potential Assay Kit (I) is a fluorescent assay that detects the mitochondrial membrane potential in living cells. The kit includes the cationic dye JC-1 (5,5′,6,6′-tetrachloro-1,1′,3,3′-tetraethyl-imidacarbocyanine iodide) and a mitochondrial membrane potential disruptor CCCP (carbonyl cyanide 3-chlorophenylhydrazone). JC-1 is a cell membrane permeable, fluorescent dye with green emission (~520 nm). When JC-1 accumulates in intact mitochondria, the dye forms aggregates that lead to orange-red fluorescence (~590 nm). The relative fluorescent units (RFU) of the orange-red emission, and the ratio of red to green emission, can be used as an indicator for mitochondria membrane potential.

Specificity / Sensitivity

Mitochondrial Membrane Potential Assay Kit (I) is expected to detect the mitochondrial membrane potential in living cells across all species. For the best result, a cell number titration is recommended when using a plate-reader and a 96-well plate.

Species Reactivity: All Species Expected

Mitochondria function as the main cellular powerhouse and play important roles in other processes, such as steroid metabolism, calcium homeostasis, apoptosis, and cellular proliferation. Mitochondrial membrane potential is a key indicator of mitochondrial function and cell health (1,2). The dissipation of mitochondrial membrane potential is considered an early indicator of apoptosis (3).

JC-1 (5,5′,6,6′-tetrachloro-1,1′,3,3′-tetraethyl-imidacarbocyanine iodide) is a cell membrane permeable, cationic dye. In normal cells, JC-1 concentrates in mitochondria to form aggregates in response to relatively high membrane potential. Decreased mitochondrial membrane potential results in dispersal of mostly monomeric JC-1 throughout the cell. When excited at 490 nm, JC-1 monomers emit a green fluorescence with a maximum at ~520 nm. Aggregates of JC-1 emit an orange-red fluorescence with a maximum at ~590 nm. Therefore, the fluorescence intensity of the orange-red emission and the ratio of orange-red fluorescence to green fluorescence can be used to measure mitochondrial membrane potential and serve as an indicator of overall cell health (4).

1.  Perry, S.W. et al. (2011) Biotechniques 50, 98-115.

2.  Nesti, C. et al. (2007) Biosci Rep 27, 165-71.

3.  Petit, P.X. et al. (1995) J Cell Biol 130, 157-67.

4.  Perelman, A. et al. (2012) Cell Death Dis 3, e430.

Data Sheets & Documentation

For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

Mitochondrial Membrane Potential Assay Kit (I)