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Merck
CN

M5280

Mastoparan, Vespula lewisii

≥97% (HPLC), powder

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About This Item

Empirical Formula (Hill Notation):
C70H131N19O15
CAS Number:
72093-21-1
Molecular Weight:
1478.91
UNSPSC Code:
41106300
NACRES:
NA.32
PubChem Substance ID:
329818006
MDL number:
MFCD00076865
Beilstein/REAXYS Number:
5491949

Key Documents

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Product Name

Mastoparan, Vespula lewisii, ≥97% (HPLC), powder

biological source

synthetic

InChI

1S/C70H131N19O15/c1-17-40(11)55(75)69(103)88-53(35-54(74)90)68(102)87-52(34-39(9)10)67(101)83-46(25-19-22-28-71)62(96)78-45(16)61(95)86-50(32-37(5)6)65(99)79-42(13)58(92)77-43(14)60(94)85-51(33-38(7)8)66(100)80-44(15)59(93)81-47(26-20-23-29-72)63(97)82-48(27-21-24-30-73)64(98)89-56(41(12)18-2)70(104)84-49(57(76)91)31-36(3)4/h36-53,55-56H,17-35,71-73,75H2,1-16H3,(H2,74,90)(H2,76,91)(H,77,92)(H,78,96)(H,79,99)(H,80,100)(H,81,93)(H,82,97)(H,83,101)(H,84,104)(H,85,94)(H,86,95)(H,87,102)(H,88,103)(H,89,98)/t40-,41-,42-,43-,44-,45-,46-,47-,48-,49-,50-,51-,52-,53-,55-,56-/m0/s1

SMILES string

CC[C@H](C)[C@H](N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCCN)C(=O)NC([C@@H](C)CC)C(=O)N[C@@H](CC(C)C)C(N)=O

InChI key

MASXKPLGZRMBJF-MVSGICTGSA-N

assay

≥97% (HPLC)

form

powder

color

white

storage temp.

−20°C

Quality Level

200

Gene Information

human ... CALM1(801), PLA2R1(22925)
mouse ... CALM1(12313), PLA2R1(18779)
rat ... CALM1(24242), PLA2R1(295631)

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Application

Mastoparan has been used as a calmodulin antagonist.

Biochem/physiol Actions

Mast cell degranulating peptide. Activates phospholipase A2; inhibits calmodulin. Cell permeable; stimulates exocytosis and phosphoinositide breakdown.
Mastoparan effectively stimulates exocytosis from diverse mammalian cells. The encoded protein facilitates the secretion of histamine from mast cells, serotonin from platelets, catecholamines from chromaffin cells and prolactin from the anterior pituitary. In addition, it is also involved in activation of Phospholipase A2 and phosphoinositides (Pl) break down. Mastoparan functions as an inhibitor for calmodulin-stimulated phosphodiesterase. Mastoparan helps in mitochondrial permeability transition by enhancing an apparent bimodal mechanism of action.

General description

Mastoparan is a cationic, amphiphilic, tetradecapeptide amide. It is composed of the restricted amino acid and the repeated sequence. This protein is a nonspecific secretagogue isolated from venom of wasp.

Other Notes

Lyophilized from 0.1% TFA in H2O

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
0000457882
0000457881
0000457882
0000457881
0000376399

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Effects of the amphiphilic peptides melittin and mastoparan on calcium influx, phosphoinositide breakdown and arachidonic acid release in rat pheochromocytoma PC12 cells.
Choi OH
Journal of Pharmacology and Experimental Therapeutics, 260, 369-375 (1992)
Marcia Perez dos Santos Cabrera et al.
Biochemistry, 51(24), 4898-4908 (2012-05-29)
This study shows that MP-1, a peptide from the venom of the Polybia paulista wasp, is more toxic to human leukemic T-lymphocytes than to human primary lymphocytes. By using model membranes and electrophysiology measurements to investigate the molecular mechanisms underlying
Inhibition of calmodulin activity by insect venom peptides
Barnette MS
Biochemical Pharmacology, 32, 2929-2933 (1983)
Lauri Tõntson et al.
Archives of biochemistry and biophysics, 524(2), 93-98 (2012-06-05)
Recombinant heterotrimeric G-protein α(i1), α(i2) and α(i3) subunits were purified in GDP-depleting conditions by affinity chromatography using StrepII-tagged β₁γ₂ subunits. Real-time monitoring of fluorescence anisotropy of Bodipy-FL-GTPγS was used for characterization of nucleotide binding properties and inactivation of the purified
Inhibition of olfactory cyclic nucleotide-activated current by calmodulin antagonists
Kleene SJ
British Journal of Pharmacology, 111, 469-472 (1994)
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