Seeds, acid phosphatase

Acid phosphatase Yeast, seeds Monoester of phosphoric acid Alcohol + H3PO4... 

There are scattered reports that phenolic acids inhibit a variety of enzymes, and it is evident that these compounds can block the function of many enzymes if they are sufficiently concentrated at the site of enzymatic functions. Activities of amylase, maltase, invertase, acid phosphatase and protease were suppressed by ferulic acid in tests using maize seeds and seedlings.17,50 Exogenously applied gibberellic acid reversed the effect of ferulic acid on amylase and acid phosphate. 

Jacobson, A. and Corcoran, M. R. 1977. Tannins as gibberellin antagonists in the synthesis of a-amylase and acid phosphatase by barley seeds. Plant... 

The co-administration of M. oleifera seed powder with arsenic protects animals from arsenic induced oxidative stress and reduce body arsenic burden (49). Exposure of rats to arsenie (2.5 mg/kg, intraperitoneally for 6 weeks) increases the levels of tissue reaetive oxygen species (ROS), metallothionein (MT) and thiobarbitnrie aeid reaetive substance (TEARS) and is accompanied by a decrease in the aetivities in the antioxidant enzymes such as superoxide dismutase (SOD), eatalase and glutathione peroxidase (GPx). Also, Arsenic exposed mice exhibits hver injury as reflected by reduced acid phosphatase (AGP), alkaline phosphatase (ALP) and aspartate aminotransferase (AST) activities and altered heme synthesis pathway as shown by inhibited blood 8-aminolevulinic acid dehydratase (5-ALAD) activity. Co-administration of M. oleifera seed powder (250 and 500 mg/kg, orally) with arsenie significantly increases the activities of SOD, catalase, GPx with elevation in redueed GSH level in tissues (liver, kidney and brain). These ehanges are accompanied by approximately 57%, 64% and 17% decrease in blood ROS, liver metallothionein (MT) and lipid peroxidation respectively in animal eo-administered with M. oleifera and arsenic. There is a reduced uptake of arsenie in soft tissues (55% in blood, 65% in liver, 54% in kidneys and 34% in brain) following eo-administration of M. oleifera seed powder (particularly at the dose of 500 mg/kg). This points to the fact that administration of M. oleifera seed powder could be beneficial during chelation therapy with a thiol chelator (26). 

Jacobson A, Corcoran MR (1977) Tannins as gibberellin antagonists in the synthesis of a-amylase and acid phosphatase by barley seeds. Plant Physiol 59 129-133 Jacqmard A (1968) Early effects of gibberellic acid on mitotic activity and DNA synthesis in the apical bud of Rudbeckia bicolor. New Phytol 69 269-271 Jaffe M (1980) Morphogenetic responses of plants to mechanical stimuli or stress. Bioscience 30 239-243... 

Nucleotidase occurs in certain leaves and plant seeds and has been purified from germinating barley. The enzyme hydrolyzes the 3 -phosphates of adenosine, inosine, guanosine, uridine, and cjrtidine as well as of coenzyme A. Purified enzyme preparations contain only traces of ATPase, acid phosphatase, and 5 -nucleotidase (126). 

Presley, H.T. and Fowden, L. (1965). Acid phosphatase and isocitrase production during seed germination. Phytochem.. A, 169-176. 

Protein tyrosine kinases and pa-otein tyrosine phosphatases are involved in abscisic acid-dependent processes in Arabidapsis seeds and suspension cells. Plant Physiology, Vol.148, No.3, (November 2008), pp. 1668-1680, ISSN 0032-0889... 

Ichihara, K., Murota, N. and Fujii, S. (1990) Intracellular translocation of phosphatidate phosphatase in maturing safflower seeds a possible mechanism of feedforward control of triacylglycerol synthesis by fatty acids, Biochim. Biophys. Acta 1043,227-234... 

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