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Sigma-Aldrich

2-APB

≥97% (titration), crystalline solid, Ins(1,4,5)P3-induced Ca2+ release inhibitor, Calbiochem®

Synonym(s):

2-APB, 2-Aminoethoxydiphenylborate, (2-Aminoethoxy)diphenylborane

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About This Item

Empirical Formula (Hill Notation):
C14H16BNO
CAS Number:
Molecular Weight:
225.09
MDL number:
UNSPSC Code:
12352200
NACRES:
NA.77

product name

2-APB, A cell-permeable modulator of Ins(1,4,5)P3-induced Ca2+ release.

Quality Level

assay

≥97% (titration)

form

crystalline solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
desiccated (hygroscopic)

color

white

solubility

DMSO: 20 mg/mL
95% ethanol: 25 mg/mL

shipped in

ambient

storage temp.

2-8°C

InChI

1S/C14H16BNO/c16-11-12-17-15(13-7-3-1-4-8-13)14-9-5-2-6-10-14/h1-10H,11-12,16H2

InChI key

BLZVCIGGICSWIG-UHFFFAOYSA-N

General description

A cell-permeable modulator of Ins(1,4,5)P3-induced Ca2+ release. Inhibits Ins(1,4,5)P3-induced Ca2+ release from rat cerebellar microsomal preparations (IC50 = 42 µM) without affecting [3H]-Ins(1,4,5)P3 binding to its receptor. Does not affect Ca2+ release from the ryanodine-sensitive Ca2+ store in rat leg skeletal muscle and heart. Inhibits spontaneous as well as the phasic contractions induced by uterotonic agents. Also reported to inhibit angiotensin II-induced contractions in aortic muscles.
A cell-permeable modulator of Ins(1,4,5)P3-induced Ca2+ release. Inhibits Ins(1,4,5)P3-induced Ca2+ release from rat cerebellar microsomal preparations (IC50 = 42 µM) without affecting [3H]-Ins(1,4,5)P3 binding to its receptor. In liver cells, 2-APB inhibits store-operated Ca2+ channels through a mechanism which may involve its binding to either the channel protein or an associated regulatory protein. Has no effect on the Ca2+ release from the ryanodine-sensitive Ca2+ store prepared from rat leg skeletal muscle and heart.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
Ins(1,4,5)P3-induced Ca2+ release
Product does not compete with ATP.
Reversible: no
Target IC50: 42 µM against Ins(1,4,5)P3-induced Ca2+ release from rat cerebellar microsomal preparations

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 2 months at -20°C.

Other Notes

Brooke, R. T., et al. 2004. Lab. Invest.84, 29.
Gregory, R.B., et al. 2001. Biochem. J.354, 285.
Ma, H.T., et al. 2001. J. Biol. Chem.276, 18888.
Ascher-Landsberg, S., et al. 1999. Biochem. Biophys. Res. Commun.264, 979.
Maruyama, T., et al. 1997. J. Biochem.122, 498.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Ca2+ influx into the trans-Golgi Network (TGN) promotes secretory cargo sorting by the Ca2+-ATPase SPCA1 and the luminal Ca2+ binding protein Cab45. Cab45 oligomerizes upon local Ca2+ influx, and Cab45 oligomers sequester and separate soluble secretory cargo from the bulk
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This study investigated the development of Ca²(+) signaling mechanisms and their role in initiating morphogenetic cell movement in the presumptive ectoderm of Japanese newt (Cynops pyrrhogaster) during gastrulation. Histochemical staining using fluorescently labeled ryanodine and dihydropyridine probes revealed that dihydropyridine

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