Name: BEC
Price: 352.00 USD

- Overview
  - Please contact us at for specific academic pricing.
    
    Background
    
    K(I): 0.4-0.6 microMS-(2-boronoethyl)-L-cysteine (BEC) is an arginase inhibitor.Arginases can catalyze the hydrolysis of L-arginine to yield L-ornithine and urea. Recently, studies show that arginases, both the type I and type II isozymes, involve in the regulation of nitric oxide production via modulating the availability of arginine for nitric oxide synthase. In vitro: Although BEC has been first identified as inhibitor of type I arginase, it was found to be a classical, competitive inhibitor of human type II arginase with K(i) value 0.31 microM at pH 7.5. However, at pH 9.5, BEC was a slow-binding inhibitor of the enzyme with K(i) value 30 nM [1]. In vivo: In animal study, the administration of BEC was found to be able to decrease arginase activity and cause alterations in NO homeostasis, which were indicated by increases in S-nitrosylated and nitrated proteins in the lungs from inflamed mice. Moreover, in contrast to first expectations, BEC could enhance perivascular and peribronchiolar lung inflammation, NF-κB DNA binding, mucus metaplasia, and mRNA expression of the NF-κB-driven chemokine genes including KC and CCL20, and result in further increases in airways hyperresponsiveness [2]. Clinical trial: Up to now, BEC is still in the preclinical development stage.
    
    [1] N. N. Kim, J. D. Cox, R. F. Baggio, et al. Probing erectile function: S-(2-boronoethyl)-L-cysteine binds to arginase as a transition state analogue and enhances smooth muscle relaxation in human penile corpus cavernosum. Biochemistry 40, 2678-2688 (2001).
    [2] Ckless K et al. Inhibition of arginase activity enhances inflammation in mice with allergic airway disease, in association with increases in protein S-nitrosylation and tyrosine nitration. J Immunol. 2008 Sep 15;181(6):4255-64.
- Properties
  - Alternative Name
    
    S-(2-boronoethyl)-L-cysteine
    
    CAS Number
    
    63107-40-4
    
    Molecular Formula
    
    C5H12BNO4S
    
    Molecular Weight
    
    193.0
    
    Appearance
    
    A crystalline solid
    
    Purity
    
    98.00%
    
    Solubility
    
    ≤5mg/ml in PBS(pH7.2)
    
    Storage
    
    Store at -20°C
    
    * For Research Use Only

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