cyclo(L-leucyl-L-tryptophyl) Struktur

cyclo(L-leucyl-L-tryptophyl)

Bezeichnung:cyclo(L-leucyl-L-tryptophyl)

CAS-Nr15136-34-2

Englisch Name:cyclo(L-leucyl-L-tryptophyl)

CBNumberCB11307048

SummenformelC17H21N3O2

Molgewicht299.37

MOL-Datei15136-34-2.mol

cyclo(L-leucyl-L-tryptophyl) physikalisch-chemischer Eigenschaften

Siedepunkt	635.2±45.0 °C(Predicted)
Dichte	1.182±0.06 g/cm3(Predicted)
storage temp.	Store at -20°C
Löslichkeit	Methanol: Soluble
Aggregatzustand	A solid
pka	13.21±0.60(Predicted)

cyclo(L-leucyl-L-tryptophyl) Chemische Eigenschaften,Einsatz,Produktion Methoden

Beschreibung
Cyclo(L-Leu-L-Trp) is a diketopiperazine metabolite originally isolated from Penicillium.¹ It is active against various bacteria (MICs = 125-1000 μg/ml) and fungi (MICs = 8-64 μg/ml), and it inhibits the production rate of hydroxy radicals in an electron spin resonance (ESR) spectroscopy-based assay (IC₅₀ = 1.8 μM).^2,3 Cyclo(L-Leu-L-Trp) is a bitter tastant that can rapidly permeate rat taste cell membranes ex vivo when used at a concentration of 1 mM.⁴ It also acts as a melatonin receptor agonist in X. laevis melanophores, inhibiting cAMP accumulation when used at a concentration of 20 μM, an effect that is blocked by the melatonin receptor antagonist luzindole .⁵
Einzelnachweise
1. Solov'eva, T.F., Baskunov, B.P., Nefedova, M.Y., et al. Biosynthesis of leucyl-tryptophanyl-diketopiperazine by a culture of Penicillium aurantio-virens and the characteristics of its production Mikrobiol. 58(3),393-399(1989).
2. Kumar, S.N., Mohandas, C., and Nambisan, B. Purification, structural elucidation and bioactivity of tryptophan containing diketopiperazines, from Comamonas testosteroni associated with a rhabditid entomopathogenic nematode against major human-pathogenic bacteria Peptides 53(2014),48-58(2014).
3. Furukawa, T., Akutagawa, T., Funatani, H., et al. Cyclic dipeptides exhibit potency for scavenging radicals Bioorg. Med. Chem. 20(6),2002-2009(2012).
4. Naim, M., Nir, S., Spielman, A.I., et al. Hypothesis of receptor-dependent and receptor-independent mechanisms for bitter and sweet taste transduction: Implications for slow taste onset and lingering aftertaste Chemistry of Taste 825,2–17(2002).
5. Zubare-Samuelov, M., Peri, I., Tal, M., et al. Some sweet and bitter tastants stimulate inhibitory pathway of adenylyl cyclase via melatonin and α₂-adrenergic receptors in Xenopus laevis melanophores Am. J. Physiol. Cell Physiol. 285(5),C1255-1262(2003).

cyclo(L-leucyl-L-tryptophyl) Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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