11. Similarly, deamination of cytosine results in uracil. 12. Examples include fatty acids, glycerol, carbohydrates, deamination products, and ethanol. 13. 5-Methylcytosine is resistant to deamination by bisulfite treatment, which deaminates cytosine residues. 14. Threonine dehydrogenase catalyzes the deamination and dehydration of threonine to 2-ketobutyrate and ammonia. 15. The inability of AtzA to perform deamination makes it unique within its superfamily, amidohydrolases. 16. Ammonia is also a metabolic product of amino acid deamination catalyzed by enzymes such as basic. 17. However, it is inherently unstable, and can change into uracil ( spontaneous deamination ). 18. Lysyl oxidase reacts with specific lysine residues and by oxidative deamination generates reactive aldehydes and allysine. 19. 5-Methylcytosine is more prone to transition than unmethylated cytosine, due to spontaneous deamination . 20. A1 modifies the cytosine base at position 6666 on the ApoB mRNA strand through a deamination .
