| 21. | Drotrecogin alpha ( activated ) belongs to the class of serine proteases.
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| 22. | PDK1 is the only enzyme capable of phosphorylating the 3rd serine site.
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| 23. | Alanine, glycine, and serine bind to the glutamate substrate site.
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| 24. | Many such cycles eventually result in enantiopure L-serine.
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| 25. | The N-terminal residue that is modified is Serine.
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| 26. | It does not bind to any other serine residues in the protein.
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| 27. | One group of inhibitors are the Serpins ( Serine Protease Inhibitors ).
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| 28. | The extracellular matrix is degraded by serine endopeptidases and metalloproteinases.
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| 29. | Phosphoglycerate dehydrogenase is regulated by the concentration of serine in the cell.
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| 30. | Instead, a serine replaces the cysteine at this position.
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