Kinases often fall into one of two categories: Either they will phosphorylate the bulkier aromatic tyrosine or the smaller serine and/or threonine, which are frequently interchangeable. Thus, they are suitably known as protein tyrosine kinases (PTKs) and protein serine/threonine kinases (PSTKs) (PTKs).
Protein kinase comes in two primary varieties. Although there are other varieties, serine/threonine kinases make up the vast majority. These enzymes phosphorylate the hydroxyl groups of serines and threonines in their substrates. Additionally, microbes and plants include protein kinases.
What are the two types of phosphorylation?
Oxidative phosphorylation and substrate-level phosphorylation are the two types of phosphorylation that can convert ADP to ATP. The source of the free energy that drives phosphorylation is the main distinction between these two processes.
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