J Integr Plant Biol. ›› 1995, Vol. 37 ›› Issue (3): -.

• Research Articles •    

Comparative Study on Interaction of DNaseⅠ with Pollen Actin and Rabbit Muscle Actin

Liu Xiong and Yan Long-fei   

Abstract: Actin purified from maize pollen grains like actin from other sources could considerably inhibit the activity of DNase Ⅰ . A linear relationship existed between inhibition and the concentration of actin. However, DNase Ⅰ was less inhibited by pollen actin than by rabbit muscle actin under the same conditions. The values of Kapp of inhibition were 1.25 μg/mL for pollen actin and 0.75 μg/mL for rabbit muscle actin. DNase Ⅰdepolymerized both pollen and rabbit muscle actin filaments. But the rate of depolymerization of pollen F-actin was higher than that of rabbit muscle F-actin under the same conditions.

Key words: Actin, DNase Ⅰ, Inhibition

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