North America
South America
Australia & New Zealand
Europe
Middle East / Africa
Asia / Pacific
×
×
Alexa Fluor® 647 Mouse anti-Cytochrome c 6H2.B4 RUO

Alexa Fluor® 647 Mouse anti-Cytochrome c 

Clone  6H2.B4   (RUO)

  • Brand BD Pharmingen™
  • Vol. Per Test 5 µl
  • Isotype Mouse BALB/c IgG1, κ
  • Reactivity Human (QC Testing)  Mouse, Rat (Reactivity Confirmed in Development) 
  • Application Bioimaging (Routinely Tested) 
  • Immunogen Rat Cytochrome c
  • Storage Buffer Aqueous buffered solution containing BSA, protein stabilizer, and ≤0.09% sodium azide.
  • Regulatory Status RUO
Product Details Recommended Assay References

Description

A cytochrome is an electron-transporting protein that contains a heme prosthetic group. Cytochromes have been known to be essential components of the mitochondrial respiratory chain since 1925. The iron atom of the heme group in cytochromes alternates between a reduced ferrous (+2) state and an oxidized ferric (+3) state during electron transport in oxidative phosphorylation. Cytochromes are classified into four groups (a, b, c and d) according to spectrochemical characteristics, and there are five cytochromes between coenzyme QH2 and O2 in the electron transport chain. Cytochrome c is a water-soluble protein that either promotes cell survival or death, depending upon its intracellular location. In healthy cells, it is a peripheral membrane protein of the mitochondria that transports electrons from the coenzyme QH2 cytochrome c reductase complex to the cytochrome c oxidase complex. When proapoptotic stimuli induce breakdown of the mitochondria, cytochrome c is released to the cytosol where it functions in the activation of caspases that trigger apoptosis.

The 6H2.B4 monoclonal antibody has been reported to recognize the native and not the denatured form of rat, mouse, and human cytochrome c. Furthermore, studies utilizing competitive ELISA indicate that mAb 6H2.B4 binds to a region around residue 62 of rat cytochrome c.

Format
  • Format Alexa Fluor® 647
  • Excitation Source Red 633 nm
  • Excitation Max 650 nm
  • Emission Max 668 nm

Alexa Fluor® 647 conjugates are highly photostable and remain fluorescent over a broad pH range. The excitation and emission maxima are nearly identical to those of APC. However, APC tends to be brighter while Alexa Fluor® 647 is more optimal for intracellular applications. This fluorochrome exhibits uncommon photostability, making it an ideal choice for use in fluorescence microscopy. Due to nearly identical excitation and emission properties but different spillover characteristics, APC and Alexa Fluor® 647 cannot be used simultaneously.

Other Formats →

Suggested Companion Products

Fixation Buffer RUO
100 mL Cat No: 554655

Perm Buffer III RUO
125 mL Cat No: 558050

Stain Buffer (FBS) RUO
500 mL Cat No: 554656

Resources & Tools
 Spectrum Viewer  Panel Designer  Spectrum Viewer  Download TDS  Regulatory Document Website
Preparation and Storage

The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated to Alexa Fluor® 647 under optimum conditions, and unreacted Alexa Fluor® 647 was removed. Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.

Product Notices

  1. Please refer to www.bdbiosciences.com/pharmingen/protocols for technical protocols.
  2. This reagent has been pre-diluted for use at the recommended Volume per Test when following the Recommended Assay Procedure. A Test is typically ~10,000 cells cultured in a well of a 96-well imaging plate.
  3. The Alexa Fluor®, Pacific Blue™, and Cascade Blue® dye antibody conjugates in this product are sold under license from Molecular Probes, Inc. for research use only, excluding use in combination with microarrays, or as analyte specific reagents. The Alexa Fluor® dyes (except for Alexa Fluor® 430), Pacific Blue™ dye, and Cascade Blue® dye are covered by pending and issued patents.
  4. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  5. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
  6. Alexa Fluor® is a registered trademark of Molecular Probes, Inc., Eugene, OR.


1.        Seed the cells in appropriate culture medium at ~10,000 cells per well in a BD Falcon™ 96-well Imaging Plate (Cat. No. 353219), and culture overnight.

2.        Remove the culture medium from the wells, and fix the cells by adding 100 µl of fresh 3.7% Formaldehyde in PBS or BD Cytofix™ fixation buffer (Cat. No. 554655) to each well and incubating for 10 minutes at room temperature (RT).

3.        Remove the fixative from the wells, and permeabilize the cells using either cold methanol or Triton™ X-100:

a.        Add 100 µl of -20°C 90% methanol or -20°C BD™ Phosflow Perm Buffer III (Cat. No. 558050) to each well and incubate for 5 minutes at RT.

OR

b.        Add 100 µl of 0.1% Triton™ X-100 to each well and incubate for 5 minutes at RT.

Triton is a trademark of The Dow Chemical Company.

4.        Remove the permeabilizer, and wash the wells twice with 100 μl of 1× PBS.

5.        Remove the PBS, and block the cells by adding 100 µl of blocking buffer (3% FBS in 1× PBS) or BD Pharmingen™ Stain Buffer (FBS) (Cat. No. 554656) to each well and incubating for 30 minutes at RT.

6.        Remove the blocking buffer, dilute the antibody conjugate 1:10 in blocking buffer or Stain Buffer (FBS), and stain the cells by adding 50 µl of the diluted antibody conjugate to each well and incubating for 1 hour at RT.

7.        Remove the diluted antibody conjugate, and wash the wells three times with 100 μl of 1× PBS.

8.        Remove the PBS, and counter-stain the nuclei by adding 100 μl of a 2 μg/ml solution of Hoechst 33342 (eg, Sigma-Aldrich Cat. No. B2261) in 1× PBS to each well at least 15 minutes before imaging.

9.        View and analyze the cells on an appropriate imaging instrument. Recommended filters for the BD Pathway™ instruments are:

Instrument                        Excitation        Emission        Dichroic

BD Pathway 855                620/60                700/75                660 LP

BD Pathway 435                628/40                690/40                FF660


  1. Arnoult D, Grodet A, Lee Y-J, Estaquier J, Blackstone C. Release of OPA1 during apoptosis participates in the rapid and complete release of cytochrome c and subsequent mitochondrial fragmentation. J Biol Chem. 2005; 280(42):35742-35750.

  2. Garrido C, Galluzzi L, Brunet M, Puig PE, Didelot C, Kroemer G. Mechanisms of cytochrome c release from mitochondria. Cell Death Differ. 2006; 13:1423-1433.

  3. Goshorn SC, Retzel E, Jemmerson R. Common structural features among monoclonal antibodies binding the same antigenic region of cytochrome c. J Biol Chem. 1991; 266(4):2134-2142. View reference

  4. Jemmerson R, Johnson JG. different functional boundaries for the major antigenic region of two cytochromes c. Proc Natl Acad Sci U S A. 1991; 88:4428-4432.

  5. Liu X, Kim CN, Yang J, Jemmerson R, Wang X. Induction of apoptotic program in cell-free extracts: requirement for dATP and cytochrome c. Cell. 1996; 86(1):147-157. View reference

  6. Rossé T, Olivier R, Monney L, et al. Bcl-2 prolongs cell survival after Bax-induced release of cytochrome c. Nature. 1998; 391(6666):496-499. View reference

558709 Rev. 1
Instruments
Reagents
Applications
Sales & Support
BD BioSciences