208725
Calphostin C, Cladosporium cladosporioides
A cell permeable, highly specific inhibitor of protein kinase C (IC₅₀ = 50 nM) that interacts with the protein′s regulatory domain by competing at the binding site of diacylglycerol and phorbol esters.
Synonym(s):
Calphostin C, Cladosporium cladosporioides, UCN-1028c
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About This Item
Empirical Formula (Hill Notation):
C44H38O14
CAS Number:
Molecular Weight:
790.76
MDL number:
UNSPSC Code:
12352200
Recommended Products
Quality Level
Assay
≥95% (HPLC)
form
lyophilized solid
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
protect from light
color
light brown
solubility
DMSO: 1 mg/mL
ethanol: soluble
shipped in
ambient
storage temp.
2-8°C
InChI
1S/C44H38O14/c1-20(56-43(50)22-10-8-7-9-11-22)16-25-31-32-26(17-21(2)57-44(51)58-24-14-12-23(45)13-15-24)42(55-6)40(49)34-28(47)19-30(53-4)36(38(32)34)35-29(52-3)18-27(46)33(37(31)35)39(48)41(25)54-5/h7-15,18-21,45,48-49H,16-17H2,1-6H3
InChI key
LSUTUUOITDQYNO-UHFFFAOYSA-N
General description
A cell permeable, highly specific inhibitor of protein kinase C (IC50 = 50 nM) that interacts with the protein’s regulatory domain by competing at the binding site of diacylglycerol and phorbol esters. Does not compete with Ca2+ or phospholipids. At higher concentrations inhibits myosin light chain kinase (IC50 >5 µM), protein kinase A (IC50 >50 µM), protein kinase G (IC50 >25 µM), and p60v-src (IC50 >50 µM). Induces apoptotic DNA fragmentation and cell death in HL-60 human promyelocytic leukemia cells. Requires brief exposure to light for activation.
Cell-permeable, highly specific inhibitor of protein kinase C (IC50 = 50 nM) that interacts with the protein′s regulatory domain by competing at the binding site of diacylglycerol and phorbol esters. At higher concentrations inhibits myosin light chain kinase (IC50 >5 µM), protein kinase A (IC50 >50 µM), protein kinase G (IC50 >25 µM), and p60v-src protein tyrosine kinase (IC50 >50 µM). Does not compete with Ca2+ or phospholipids. Also induces apoptotic DNA fragmentation and cell death in HL-60 human promyelocytic leukemia cells. Inhibition of PKC is dependent on exposure to light in cell-free systems. Ordinary fluorescent light is sufficient for full activation.
Biochem/physiol Actions
Cell permeable: yes
Primary Target
PKC
PKC
Product does not compete with ATP.
Reversible: no
Target IC50: 50 nM against protein kinase C
Warning
Toxicity: Standard Handling (A)
Reconstitution
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.
Other Notes
Jarvis, W.D., et al. 1994. Cancer Res.54, 1707.
Svetlov, S., and Nigami, S. 1993. Biochim. Biophys. Acta 1177, 75.
Gopalakrishna, R., et al. 1992. FEBS Lett. 314, 149.
Shimamato, H., et al. 1992. Br. J. Pharmacol.107, 282.
Bruns, R.F., et al. 1991. Biochem. Biophys. Res. Commun.176, 288.
Tamaoki, T., et al. 1990. Biotechnology8, 732.
Kobayashi, E., et al. 1989. Biochem. Biophys. Res. Commun.159, 548.
Svetlov, S., and Nigami, S. 1993. Biochim. Biophys. Acta 1177, 75.
Gopalakrishna, R., et al. 1992. FEBS Lett. 314, 149.
Shimamato, H., et al. 1992. Br. J. Pharmacol.107, 282.
Bruns, R.F., et al. 1991. Biochem. Biophys. Res. Commun.176, 288.
Tamaoki, T., et al. 1990. Biotechnology8, 732.
Kobayashi, E., et al. 1989. Biochem. Biophys. Res. Commun.159, 548.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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