Catalog No. Size PriceQuantity
M13743-2 2mg solid $450
M13743-10 10mg solid $1,800


Crosstide is a peptide analog of glycogen synthase kinase α/β fusion protein sequence which is a substrate for Akt.

Product information

CAS Number: 171783-05-4

Molecular Weight: 1164.23

Formula: C48H77N17O17

Chemical Name: (4S)-4-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S, 3R)-2-[[(2S)-2-[[(2S)-1-[(2S)-2-[(2-aminoacetyl)amino]-5-(diaminomethylideneamino)pentanoyl]pyrrolidine-2-carbonyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]-3-hydroxybutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxypropanoyl]amino]-3-phenylpropanoyl]amino]propanoyl]amino]-5-(carboxymethylamino)-5-oxopentanoic acid



InChi: InChI=1S/C48H77N17O17/c1-24(38(74)59-28(14-15-35(70)71)39(75)56-21-36(72)73)57-41(77)30(19-26-9-4-3-5-10-26)61-42(78)31(22-66)62-43(79)32(23-67)63-45(81)37(25(2)68)64-40(76)27(11-6-16-54-47(50)51)60-44(80)33-13-8-18-65(33)46(82)29(58-34(69)20-49)12-7-17-55-48(52)53/h3-5,9-10,24-25,27-33,37,66-68H,6-8,11-23,49H2,1-2H3,(H,56,75)(H,57,77)(H,58,69)(H,59,74)(H,60,80)(H,61,78)(H,62,79)(H,63,81)(H,64,76)(H,70,71)(H,72,73)(H4,50,51,54)(H4,52,53,55)

Technical Data

Appearance: Solid Power

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

Solubility: H2O : ≥ 50 mg/mL (42.95 mM).

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:

16HBE14o− cells exposed to RV39 demonstrate a crosstide kinase activity in vitro. Serine phosphorylation of crosstide is confirmed by immunoblotting, and phosphorylation is blocked by PP2 but not by PP3. The wildtype GST-AKT2 shows significant phosphoryl transferase activity towards crosstide, reaching an initial velocity of 16 pmol phosphate/min/μg enzyme. The mutant GST-AKT2T/E,S/D displayed an initial velocity of 85 pmol phosphate/min/μg kinase for phosphorylation of Crosstide, corresponding to a 5-fold increase compared to the wildtype enzyme.


  1. Bentley JK, et al. Rhinovirus activates interleukin-8 expression via a Src/p110beta phosphatidylinositol 3-kinase/Akt pathway in human airway epithelial cells. J Virol. 2007 Feb;81(3):1186-94. Epub 2006 Nov 22.
  2. Baer K, et al. Activation of a GST-tagged AKT2/PKBbeta. Biochim Biophys Acta. 2005 Oct 10;1725(3):340-7. Epub 2005 Apr 20.

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

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