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63184

Sigma-Aldrich

5-Maleimido-eosin

for fluorescence, ≥93% (HPLC)

Sinónimos:

EMA, Eosin-5-maleimide

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About This Item

Fórmula empírica (notación de Hill):
C24H9Br4NO7
Número de CAS:
150322-02-4
Peso molecular:
742.95
Número MDL:
MFCD07437936
Código UNSPSC:
12352207
ID de la sustancia en PubChem:
329759808
NACRES:
NA.32

grado

for fluorescence

Nivel de calidad

100

Ensayo

≥93% (HPLC)

fluorescencia

λex 524 nm; λem 545 nm (after derivatization with 2-mercaptoethanol)

idoneidad

suitable for fluorescence

temp. de almacenamiento

2-8°C

cadena SMILES

Oc1c(Br)cc2c(Oc3c(Br)c(O)c(Br)cc3C24OC(=O)c5cc(ccc45)N6C(=O)C=CC6=O)c1Br

InChI

1S/C24H9Br4NO7/c25-13-6-11-21(17(27)19(13)32)35-22-12(7-14(26)20(33)18(22)28)24(11)10-2-1-8(5-9(10)23(34)36-24)29-15(30)3-4-16(29)31/h1-7,32-33H

Clave InChI

YRCLWXRIEYQTAV-UHFFFAOYSA-N

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Descripción general

5-Maleimido-eosin, also known as EMA or Eosin-5-maleimide, is a fluorescent binding agent. The 5-Maleimido-eosin binding test measures the EMA-labeled cells reduced mean channel fluorescence (MCF) reading.

Aplicación

Eosin-5-maleimide has been used as a fluorescent probe for the human erythrocyte band 3 protein. It is widely used as a diagnostic probe for the laboratory detection of hereditary spherocytosis (HS) by flow cytometry. The eosin-5-maleimide binding test was done to analyze the effect of alectinib (first line of treatment) for anaplastic lymphoma kinase (ALK).

Otras notas

Triplet probe. Measurement of rotational diffusion of protein in solution and in membranes, including myosin and pyruvate dehydrogenase

Producto relacionado

Referencia del producto
Descripción
Precios

08168

Timestrip Plus™ 8 °C

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)

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Certificados de análisis (COA)

Lot/Batch Number
BCCG9639
BCCF3538
BCCD3360
BCCB9833
BCBZ9994

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S Ishiwata et al.
The Journal of biological chemistry, 262(17), 8314-8317 (1987-06-15)
We studied the rotational Brownian motions of myosin heads, of which the sulfhydryl group was selectively labeled with the triplet probe 5-eosinylmaleimide, in myofibril by using flash-induced phosphorescence anisotropy decay measurements. The anisotropy decay curve under relaxing conditions consisted of
Renée L Crisp et al.
Pediatric blood & cancer, 59(7), 1299-1301 (2012-04-11)
We studied 31 children with hemolytic anemia, or with positive family history for hereditary spherocytosis (HS), to assess the reliability of capillary blood samples for the diagnosis. HS was diagnosed in 20 patients. Cryohemolysis (CH) was positive in 94% and
Delay in the measurement of eosin-5'-maleimide (EMA) binding does not affect the test result for the diagnosis of hereditary spherocytosis.
Ciepiela O, Kotula I, Gorska E, et al.
Clinical Chemistry and Laboratory Medicine, 0, 1-7 (2012)
Paola Bianchi et al.
Haematologica, 97(4), 516-523 (2011-11-08)
The laboratory diagnosis of hereditary spherocytosis commonly relies on NaCl-based or glycerol-based red cell osmotic fragility tests; more recently, an assay directly targeting the hereditary spherocytosis molecular defect (eosin-5'-maleimide-binding test) has been proposed. None of the available tests identifies all
A J Visser et al.
European journal of biochemistry, 121(1), 233-235 (1981-12-01)
The enzymatically reduced lipoyl residues of the transacetylase component of the pyruvate dehydrogenase complex from Escherichia coli were labeled with eosin maleimide. Using eosin as triplet probe, triplet-triplet absorption dichroism measurements were performed to obtain rotational correlation times of the
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