| 词汇 | enzyme |
| 释义 | enzyme noun[ C ] uk /ˈen.zaɪm/ us /ˈen.zaɪm/ any of a group of chemical substances that are produced by living cells and cause particular chemical reactions to happen while not being changed themselves: 酶 An enzyme in the saliva of the mouth starts the process of breaking down the food.由于唾液中酶的作用，食物进入口腔时就开始了分解过程。 Biochemistry adipose adrenalin albumin aldosterone amino acid endonuclease endorphin enzymatic enzymatically fatty acid mRNA mycoprotein non-enzymatic nuclease nucleic acid spike protein T level testosterone trace element transfer RNA enzyme | American Dictionaryenzyme noun[ C ] us/ˈen·zɑɪm/ biology any of a group of chemical substances that are produced by living cells and which cause particular chemical reactions to happen Examples of enzymeenzyme It seems that these enzymes played integral roles in the protection of plants from oxidative stress. Most zygote isolations were completed using cellulase and pectinase because the enzymes substantially improved this process. The reasons for the dominance of kinase (and other enzyme) inhibitors as targets for modern cancer therapeutics are centred on the enzyme substrate-binding site. Figure 1 highlights these organellar compartments and provides a general description of their resident metabolic pathways and enzymes. This view was supported by biochemical evidence of the presence of lysosomal enzymes. However, it was difficult to reconcile such a model with many properties of the enzymes. A role for these enzymes in the hostparasite interaction, or in the increased susceptibility to secondary infections has yet to be demonstrated. Changes in gene expression include those concerned with hormone receptors, signalling and glycolytic enzymes. The percentage of genetic variation between regions, among populations within regions and within populations was determined for each enzyme. The proportion of genetic variation between regions, among populations within regions, and within populations was calculated for each enzyme (table 2). This suggests that enzyme(s) with peroxidase activity are released following fertilisation. This is unfortunate since the oocyst is basically a dormant stage, and the activities of many enzymes of interest would be expected to be low. To date, studies on seeds have failed to provide an enzyme as a transitional developmental marker between the dormant and germinating states. In so doing, these enzymes may have generated selective pressure to be retained and, therefore, broken free of the invasion-elimination cycle of most homing sequences. Results are expressed as the percentage of residual activity of the enzyme against the concentration of the inhibitor. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Collocations withenzymeenzymeThese are words often used in combination with enzyme. Click on a collocation to see more examples of it. active enzyme Thus, there is no obvious relationship between the presence of activeenzyme, its protein or transcripts during germination. antioxidant enzyme Haemocytes from resistant hosts induced an initial moderate increase in antioxidantenzyme expression followed by a down-regulation. digestive enzyme The most frequently cited case of convergence and parallelism at the sequence level is the digestiveenzyme lysozyme in a number of unrelated animals. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. See all collocations with enzyme |
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