| Description | β-Apo-13-carotenone is a naturally occurring β-apocarotenoid, and is a RXRα antagonist. |
| In vitro | In homogenates of intestinal mucosa of rat, β-apo-13-Carotenone is identified as enzymatic cleavage products of β-carotene. β-apo-13-carotenone is antagonize the activation of RXRα by 9-cis-retinoic acid and is effective at concentrations as low as 1nM. Molecular modeling studies reveal that β-apo-13-carotenone makes molecular interactions like an antagonist of RXRα[1]. β-apo-13-carotenone competes for 9cRA binding to RXRα with an affinity (7–8 nM) identical to 9cRA itself. β-apo-13-carotenone antagonizes 9cRA activation of full-length hRXRα with a similar efficiency as the known antagonist UVI3003. β-apo-13-carotenone induces formation of the RXRα transcriptionally silent tetramer but does not inhibit coactivator recruitment to the isolated LBD[2]. |
| Synonyms | D'Orenone |
| molecular weight | 258.4 |
| Molecular formula | C18H26O |
| CAS | 17974-57-1 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |
| Solubility | DMSO: 33.33 mg/mL (128.99 mM), Sonication is recommended. |
| References | 1. Eroglu A, et al. The eccentric cleavage product of β-carotene, β-apo-13-carotenone, functions as an antagonist of RXRα. Arch Biochem Biophys. 2010 Dec 1;504(1):11-6. 2. Sun J, et al. β-Apo-13-carotenone regulates retinoid X receptor transcriptional activity through tetramerization of the receptor. J Biol Chem. 2014 Nov 28;289(48):33118-24. 3. Wang CX, et al. Actions of β-apo-carotenoids in differentiating cells: differential effects in P19 cells and 3T3-L1 adipocytes. Arch Biochem Biophys. 2015 Apr 15;572:2-10. |