Lyases
| Medical Definition: |
A class of enzymes that catalyze the cleavage of C-C, C-O, and C-N, and other bonds by other means than by hydrolysis or oxidation. (Enzyme Nomenclature, 1992) EC 4. |
| Also Called: |
Desmolases |
| CAS Number: |
EC 4. |
Lyases Categories.
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Carbon-Carbon Lyases - Enzymes that catalyze the cleavage of a carbon-carbon bond by means other than hydrolysis or oxidation. This subclass contains the DECARBOXYLASES, the ALDEHYDE-LYASES, and the OXO-ACID-LYASES. EC 4.1. |
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Carbon-Nitrogen Lyases - Enzymes that catalyze the cleavage of a carbon-nitrogen bond by means other than hydrolysis or oxidation. Subclasses are the AMMONIA-LYASES, the AMIDINE-LYASES, the amine-lyases, and other carbon-nitrogen lyases. EC 4.3. |
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Carbon-Oxygen Lyases - Enzymes that catalyze the cleavage of a carbon-oxygen bond by means other than hydrolysis or oxidation. EC 4.2. |
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Carbon-Sulfur Lyases - Enzymes that catalyze the cleavage of a carbon-sulfur bond by means other than hydrolysis or oxidation. EC 4.4. |
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Ferrochelatase - An enzyme widely distributed in cells and tissues. It is located in the inner mitochondrial membrane and catalyzes the formation of heme from protoporphyrin IX and ferrous ions during the terminal step in the heme biosynthetic pathway. EC 4.99.1.1. |
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Phosphorus-Oxygen Lyases - Enzymes that catalyze the cleavage of a phosphorus-oxygen bond by means other than hydrolysis or oxidation. EC 4.6. |
Lyases Medical Definitions and Terms
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