| 释义 |
peroxisome Cytology.|pəˈrɒksɪsəʊm|
[f. peroxide + -some4.]
An organelle present in the cytoplasm of many kinds of cell which contains the reducing enzyme catalase and usu. some oxidases that produce hydrogen peroxide.
1965C. de Duve in Jrnl. Cell Biol. XXVII. 25a The name peroxisome is proposed for the microbodies of rat liver and for the particles of similar biochemical nature existing in kidney and in Tetrahymena pyriformis. The peroxisomes contain large amounts of catalase and several hydrogen peroxide-producing oxidases. 1970Sci. Amer. Sept. 113/3 Recently the cells of higher organisms have been found to contain organelles called peroxisomes, whose major function is thought to be the protection of cells from oxygen. 1975Science 21 Nov. 787/1 Peroxisomes (microbodies), cytoplasmic constituents characterized morphologically by a single limiting membrane and a finely granular or homogeneous matrix, have recently been recognized as ubiquitous structures in animal and plant cells.
Hence peroxiˈsomal a.
1969Jrnl. Protozool. XVI. 430/2 The 6 acid hydrolases studied have almost identical distribution patterns, differing clearly from those of the mitochondrial malate dehydrogenase, peroxisomal catalase and urate oxidase. 1972McGraw-Hill Yearbk. Sci. & Technol. 321/1 Although peroxisomal respiration will be considered primarily, the entire process of photorespiration involves the mitochondrion. 1975Science 21 Nov. 789/1 Recent studies..failed to demonstrate the presence of peroxisomal oxidases in these catalase-containing particles isolated from Harder's gland. |