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KYL

Product Name
KYL
CAS No.
676657-00-4
Chemical Name
KYL
Synonyms
KYL;KYL TFA;KYL peptide;KYLPYWPVLSSL;L-Leucine, L-lysyl-L-tyrosyl-L-leucyl-L-prolyl-L-tyrosyl-L-tryptophyl-L-prolyl-L-valyl-L-leucyl-L-seryl-L-seryl-
CBNumber
CB14796559
Molecular Formula
C74H108N14O17
Formula Weight
1465.73
MOL File
676657-00-4.mol
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KYL Property

Boiling point:
1728.5±65.0 °C(Predicted)
Density 
1.290±0.06 g/cm3(Predicted)
storage temp. 
Store at -20°C
solubility 
Soluble in DMSO
pka
3.29±0.10(Predicted)
form 
Solid
color 
White to off-white
Water Solubility 
Soluble to 2 mg/ml in water
Sequence
H-Lys-Tyr-Leu-Pro-Tyr-Trp-Pro-Val-Leu-Ser-Ser-Leu-OH
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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
SML1378
Product name
KYL trifluoroacetate salt
Purity
≥95% (HPLC)
Packaging
1 mg
Price
$189
Updated
2025/07/31
Tocris
Product number
5290
Product name
KYL
Packaging
1
Price
$181
Updated
2021/12/16
Usbiological
Product number
255617
Product name
KYL
Packaging
1mg
Price
$432
Updated
2021/12/16
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KYL Chemical Properties,Usage,Production

Uses

KYL peptide, an antagonistic peptide, selectively targets EphA4 receptor (IC50:4.22 μM, Kd:1.3 μM). KYL peptide binds to the ligand-binding domain of EphA4, effectively alleviates Aβ-induced synaptic dysfunction and synaptic plasticity defects in AD mice. KYL peptide can promote nerve regeneration after injury and modulating immune responses[1][2][3].

Biological Activity

KYL is a potent and selective EphA4 receptor tyrosine kinase antagonist th at inhibits EphA4-EphrinA5 interactions. KYL binds to the ephrin-binding domain of EphA4.

IC 50

EphA4: 4.22 μM μM (IC50); EphA4: 1.30 μM (Ki)

storage

Store at -20°C

References

[1] Wu B, et.al. HTS by NMR of combinatorial libraries: a fragment-based approach to ligand discovery. Chem Biol. 2013 Jan 24;20(1):19-33. DOI:10.1016/j.chembiol.2012.10.015
[2] Lamberto I, et, al. Distinctive binding of three antagonistic peptides to the ephrin-binding pocket of the EphA4 receptor. Biochem J. 2012 Jul 1;445(1):47-56. DOI:10.1042/BJ20120408
[3] Fu AKY, et, al. Blockade of EphA4 signaling ameliorates hippocampal synaptic dysfunctions in mouse models of Alzheimer's disease. Proc Natl Acad Sci U S A. 2014 Jul 8;111(27):9959-64. DOI:10.1073/pnas.1405803111

KYL Preparation Products And Raw materials

Raw materials

Preparation Products

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KYL Suppliers

Creative Peptides
Tel
Email
info@creative-peptides.com
Country
United States
ProdList
6083
Advantage
56
BOC Sciences
Tel
+1-631-485-4226
Fax
1-631-614-7828
Email
inquiry@bocsci.com
Country
United States
ProdList
19552
Advantage
58
Aladdin Scientific
Tel
Email
tp@aladdinsci.com
Country
United States
ProdList
57505
Advantage
58
United States Biological
Tel
--
Fax
--
Email
chemicals@usbio.net
Country
United States
ProdList
6214
Advantage
80

676657-00-4, KYLRelated Search:


  • KYL
  • L-Leucine, L-lysyl-L-tyrosyl-L-leucyl-L-prolyl-L-tyrosyl-L-tryptophyl-L-prolyl-L-valyl-L-leucyl-L-seryl-L-seryl-
  • KYL peptide
  • KYLPYWPVLSSL
  • KYL TFA
  • 676657-00-4
  • C74H108N14O17