Sinha U, Singh V P
Biochem J. 1980 Aug 15;190(2):457-60. doi: 10.1042/bj1900457.
Thermoactinomyces vulgaris utilized both organic and inorganic phosphates with equal efficiency for its growth. The specific activities of the thermophilic acid and alkaline phosphatases were found to be maximum at 1 mM concentration of each phosphate source. All the phosphatase isoenzymes (three alkaline and one acidic) were observed irrespective of the substrate source and concentration, suggesting constitutive synthesis of the enzymes. During growth and differentiation, both acid and alkaline phosphatases exhibited uniformly stable patterns of isoenzymes with slight variations in their specific activities.
普通嗜热放线菌利用有机磷酸盐和无机磷酸盐进行生长的效率相同。发现嗜热酸性和碱性磷酸酶的比活性在每种磷酸盐源浓度为1 mM时最高。无论底物来源和浓度如何,均观察到所有磷酸酶同工酶(三种碱性和一种酸性),这表明这些酶是组成型合成的。在生长和分化过程中,酸性和碱性磷酸酶均表现出同工酶模式一致稳定,但比活性略有变化。