CALP3 - CAS# 261969-05-5

CALP3, a Ca2+-like peptide, is a potent Ca2+ channel blocker that activates EF hand motifs of Ca2+-binding proteins. CALP3 can functionally mimic increased [Ca2+]i by modulating the activity of Calmodulin (CaM), Ca2+ channels and pumps. CALP3 has the potential in controlling apoptosis in diseases such as AIDS or neuronal loss due to ischemia.

Product information

CAS Number: 261969-05-5

Molecular Weight: 881.07

Formula: C44H68N10O9

Chemical Name: 6-amino-2-[[2-[[2-[[2-[[2-[[2-[[6-amino-2-[(2-amino-3-methylbutanoyl)amino]hexanoyl]amino]-3-phenylpropanoyl]amino]acetyl]amino]-3-methylbutanoyl]amino]acetyl]amino]-3-phenylpropanoyl]amino]hexanoic acid

Smiles: CC(C)C(NC(=O)CNC(=O)C(CC1=CC=CC=C1)NC(=O)C(CCCCN)NC(=O)C(N)C(C)C)C(=O)NCC(=O)NC(CC1=CC=CC=C1)C(=O)NC(CCCCN)C(O)=O

InChiKey: OBMFGXCPBIYSPH-UHFFFAOYSA-N

InChi: InChI=1S/C44H68N10O9/c1-27(2)37(47)42(60)51-31(19-11-13-21-45)40(58)53-33(23-29-15-7-5-8-16-29)39(57)48-26-36(56)54-38(28(3)4)43(61)49-25-35(55)50-34(24-30-17-9-6-10-18-30)41(59)52-32(44(62)63)20-12-14-22-46/h5-10,15-18,27-28,31-34,37-38H,11-14,19-26,45-47H2,1-4H3,(H,48,57)(H,49,61)(H,50,55)(H,51,60)(H,52,59)(H,53,58)(H,54,56)(H,62,63)

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

CALP3 (50, 100, 150, 200 μM) inhibits glutamate caused a large sustained increase in [Ca2+]i in a dose-dependent manner (IC50=37.25 μM) in Fura-2-loaded neuronal cultures. CALP3 (50, 100, 150, 200 μM) inhibits glutamate-induced cytotoxicity in a dose-dependent manner (IC50=50.97 μM) in cultured rat neocortical neurons. CALP3 causes dose-dependent inhibition of apoptosis (IC50=33.41 μM). CALP3 (100 μM) inhibits apoptosis induced by HIV gp120 and SAg in Human T cells. CALP3 (100 μM; 15 min pretreatment) reduces gossypol-induced necrosis and increases the fraction of live cells. Cyclic-CALP3 is synthesized starting from Fmoc-Asp(PEG-PS)-OAl. Cyclic CALP3 is unable to inhibit Ca21 influx, and this peptide served as a negative control. Cyclic CALP3 does not inhibit the effect of glutamate.

Products are for research use only. Not for human use.