1. A homogeneous peroxidatically active product has been isolated from a peptic digest of ox-liver catalase. 2. The nitrogen and the iron contents of the ;active product' are 15.3% and 0.21% respectively. 3. The S(0) (20,w) and molecular weight of the ;active product' are 2.6s and 27500 respectively. 4. The ;active product' contains 248 amino acid residues/mol. assuming a mol.wt. of 27500. 5. T...

Genetic and biochemical analyses suggest that the developmental program of catalase (H(2)O(2):H(2)O(2) oxidoreductase, EC 1.11.1.6) activity in maize scutella is controlled by a temporal regulatory gene (Car1) that is distinct from the structural genes thus far identified. Recombination data show that Car1 is located about 37 map units from the Cat2 structural gene on the chromosome 1S. Turnove...

INTRODUCTION As a result of certain similarities in behavior between surface-unfolded (3) and intracellular erythrocyte catalase (4), the hypothesis was advanced "that catalase within the cell exists partially, but reversibly, unfolded at some intracellular interface; upon cytolysis, the enzyme is desorbed from the interface and changed to the roUed-up (native), soluble condition, with conseque...

Spend your few moment to read a book even only few pages. Reading book is not obligation and force for everybody. When you don't want to read, you can get punishment from the publisher. Read a book becomes a choice of your different characteristics. Many people with reading habit will always be enjoyable to read, or on the contrary. For some reasons, this blood catalase activity in gestational ...

The turnover of two homotetramers of catalase, V(4) and Z(4), specified by genes at two separate loci, has been studied during germination of maize seed by the techniques of density labeling and starch-gel electrophoresis. Both isozymes were shown to be turning over during this time. However, Z(4) accumulates because the rate of synthesis exceeds the rate of degradation, whereas V(4) slowly dis...

Catalase (CAT) is a common antioxidant enzyme in almost all living organisms. Currently, detailed reports on cucumber (Cucumis sativus L.) CAT (CsCAT) genes and tissue expression profiling are limited. In the present study, four candidate CsCAT genes were identified in cucumber. Phylogenetic analysis indicated that CsCAT1-CsCAT3 are closely related to Arabidopsis AtCAT1-AtCAT3, but no obvious c...

A methodology for reoxygenation of in situ benthic chamber systems by enzymatic catalysis of hydrogen peroxide with catalase was developed. For a 10-liter benthic chamber, the injection of 1 ml of catalase suspension (26,000 U ml) followed by 10 ml of 0.5 M hydrogen peroxide solution resulted in complete reoxygenation within 2.5 min at 25 degrees C.

The genus Streptococcus includes organisms which are homofermentative, facultative with respect to oxygen, fastidious in their nutrient requirements, without cytochrome system, and are therefore considered to be catalase negative. Recent work in this laboratory revealed two strains of several hundred streptococci, screened from silage fermentations, that were capable of producing catalase. They...

The biochemical effects of ethylacetate extract of wheat (Avemar) on some serum and liver enzymes were evaluated in T. brucei infected rats. The results show significant increase in specific activities of serum aspartate transaminase (AST) in infected untreated rats when compared with infected treated rats. However, there were no significant difference in serum and liver alanine transaminase (A...