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bBBr [Dibromobimane] *CAS 68654-25-1*

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Physical properties
Molecular weight350.01
SolventDMSO
Spectral properties
Excitation (nm)394
Emission (nm)490
Storage, safety and handling
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12171501

OverviewpdfSDSpdfProtocol


CAS
68654-25-1
Molecular weight
350.01
Excitation (nm)
394
Emission (nm)
490
dBBr is one of the most popular thiol-reactive fluorescent tags, and is widely used to detect various thiol-containing biomolecules such as glutathione in cells. It is fluorogenic upon reacting with thiol-containing molecules. Dibromobimane is a unique fluorogenic crosslinking reagent for proteins because it is unlikely to fluoresce until both of its alkylating groups have reacted. It has been used to crosslink thiols in myosin, hemoglobin, Escherichia coli lactose permease and mitochondrial ATPase. Dibromobimane is also used to probe for the proximity of dual-cysteine mutagenesis sites in ArsA ATPase and to crosslink thiols in actin, myosin and P-glycoprotein.

Calculators


Common stock solution preparation

Table 1. Volume of DMSO needed to reconstitute specific mass of bBBr [Dibromobimane] *CAS 68654-25-1* to given concentration. Note that volume is only for preparing stock solution. Refer to sample experimental protocol for appropriate experimental/physiological buffers.

0.1 mg0.5 mg1 mg5 mg10 mg
1 mM285.706 µL1.429 mL2.857 mL14.285 mL28.571 mL
5 mM57.141 µL285.706 µL571.412 µL2.857 mL5.714 mL
10 mM28.571 µL142.853 µL285.706 µL1.429 mL2.857 mL

Molarity calculator

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Spectrum


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Spectral properties

Excitation (nm)394
Emission (nm)490

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References


View all 25 references: Citation Explorer
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Journal: AIDS Res Hum Retroviruses (2000): 1929
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Paradoxical effect of reagents for sulfhydryl and disulfide groups on human sperm capacitation and superoxide production
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Journal: Free Radic Biol Med (1998): 803
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Journal: Clin Chem (1998): 825
Evaluation of methods for the quantitation of cysteines in proteins
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Journal: Anal Biochem (1998): 8
Interaction of glucose and metformin with isolated red cell membrane
Authors: Freisleben HJ, Furstenberger HJ, Deisinger S, Freisleben KB, Wiernsperger N, Zimmer G.
Journal: Arzneimittelforschung (1996): 773
Bromobimane probes for thiols
Authors: Kosower EM, Kosower NS.
Journal: Methods Enzymol (1995): 133