Equisetin

Equisetin is an N-methylserine-derived acyl tetramic acid isolated from a terrestrial fungus Fusarium equiseti NRRL 5537[1]. Equisetin is a tetramate-containing natural product with antibiotic and cytotoxic activity[2]. Equisetin inhibits the growth of Gram-positive bacteria and HIV-1 integrase activity but shows no activity against Gram-negative bacteria[3]. Equisetin is a Quorum-sensing inhibitor (QSI) that attenuates QS-regulated virulence phenotypes in P. aeruginosa without affecting the growth of bacterias, serves as a leading compound for the treatment of P. aeruginosa infections[4].

Research Areas >> Infection

Signaling Pathways >> Metabolic Enzyme/Protease >> HIV Integrase

[1]. Burmeister HR, et al. Antibiotic produced by Fusarium equiseti NRRL 5537. Antimicrob Agents Chemother. 1974 Jun;5(6):634-9.

[2]. Vesonder RF, et al. Equisetin, an antibiotic from Fusarium equiseti NRRL 5537, identified as a derivative of N-methyl-2, 4-pyrollidone. J Antibiot (Tokyo). 1979 Jul;32(7):759-61.

[3]. Lee J, et al. The hierarchy quorum sensing network in Pseudomonas aeruginosa. Protein Cell. 2015 Jan;6(1):26-41.

[4]. Zhang M, et al. Equisetin as potential quorum sensing inhibitor of Pseudomonas aeruginosa. Biotechnol Lett. 2018 May;40(5):865-870.

MOLECULAR FORMULA :

C22-H31-N-O4

MOLECULAR WEIGHT :

373.54

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

63 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

AMACCQ Antimicrobial Agents and Chemotherapy. (American Soc. for Microbiology, 1913 I St., NW, Washington, DC 20006) V.1- 1972- Volume(issue)/page/year: 5,634,1974