Dictionary Meaning and Definition on 'Substrates'
Wikipedia Meaning and Definition on 'Substrates'
In biochemistry, a substrate is a molecule upon which an enzyme acts. Enzymes catalyze chemical reactions involving the substrate(s). In the case of a single substrate, the substrate binds with the enzyme active site, and an enzyme-substrate complex is formed. The substrate is transformed into one or more products, which are then released from the active site. The active site is now free to accept another substrate molecule. In in the case of more than one substrate, these may bind in a particular order to the active site, before reacting together to produce products.
For example, curd formation (rennet coagulation) is a reaction that occurs upon adding the enzyme rennin to milk. In this reaction, the substrate is a milk protein (e.g., casein) and the enzyme is rennin. The products are two polypeptides that have been formed by the cleavage of the larger peptide substrate. Another example is the chemical decomposition of hydrogen peroxide carried out by the enzyme catalase. As enzymes are catalysts, they are not changed by the reactions they carry out. The substrate(s), however, is/are converted to product(s). Here, hydrogen peroxide is converted to water and oxygen gas.[See more about Substrates at Dictionary 3.0 Encyclopedia]
Words and phrases related to 'Substrates'
Substrates Sample Sentences in News
- Rubicon Technology, Inc. Reports Second Quarter 2014 Results of Operations
Rubicon Technology, Inc. , a leading provider of sapphire substrates and products to the LED, semiconductor, and optical industries, today reported financial results f Read more on this news related to 'Substrates'
- AXT Appoints Gary L. Fischer as Chief Financial Officer
AXT, Inc. , a leading manufacturer of compound semiconductor substrates, today announced that it has appointed Gary L. Fischer vice president and chief financial officer, effective Aug. 11, 2014. Fischer ... Read more on this news related to 'Substrates'
- Rubicon Technology to Present at Investor Conferences
Rubicon Technology, Inc. , a leading provider of sapphire substrates and products to the LED, semiconductor, and optical markets, will participate in two investor conferences in August, both in Boston. Read more on this news related to 'Substrates'