Record Details


Field	Value

Title	Isolation of a laccase with HIV-1 reverse transcriptase inhibitory activity from fresh fruiting bodies of the Lentinus edodes (Shiitake mushroom)

Creator	Sun, Jian Wang, Hexiang Ng, Tzi Bun

Subject	Lentinus edodes Shiitake mushroom Laccase HIV-1 reverse transcriptase inhibitory activity

Description	88-94 A laccase with a molecular mass of 67 kDa and inhibitory activity toward HIV-1 reverse transcriptase (IC₅₀ = 7.5 M) was isolated from fresh fruiting bodies of the Lentinus edodes (Shiitake mushroom). Its characteristics were compared with those of laccases from cultured mushroom mycelia reported earlier. The laccase was unadsorbed on DEAE-cellulose, Affi-gel blue gel and CM-cellulose, but was adsorbed on Con A-Sepharose. About 50-fold purification was achieved with a 19.2% yield of the enzyme. The activity of the enzyme increased steadily from 20°C to 70°C. The activity disappeared after exposure to the boiling temperature for 10 min. Its optimal pH was 4 and very little enzyme activity remained at and above pH 10. The laccase inhibited HIV-1 reverse transcriptase with an IC₅₀ of 7.5 M, but did not demonstrate any antifungal or anti-proliferative activity.

Date	2011-04-26T06:53:00Z 2011-04-26T06:53:00Z 2011-04

Type	Article

Identifier	0975-0959 (Online); 0301-1208 (Print) http://hdl.handle.net/123456789/11610

Language	en_US

Rights	CC Attribution-Noncommercial-No Derivative Works 2.5 India

Publisher	NISCAIR-CSIR, India

Source	IJBB Vol.48(2) [April 2011]

ICAR Research Data Repository for Knowledge Management