Other tyrosine kinases

The term "Other tyrosine kinases" refers to a broad and heterogeneous group of enzymes that catalyze the transfer of a phosphate group from ATP to tyrosine residues on substrate proteins (Hubbard & Till, 2000). This category typically encompasses various receptor and non-receptor tyrosine kinases that are not grouped into major, well-defined families such as the Epidermal Growth Factor Receptor (EGFR) or Vascular Endothelial Growth Factor Receptor (VEGFR) families (Paul & Mukhopadhyay, 2004). These enzymes play critical roles in intracellular signaling pathways that govern essential cellular processes, including growth, differentiation, metabolism, and apoptosis. Dysregulation or mutation of these kinases is frequently implicated in the pathogenesis of various malignancies and inflammatory diseases, making them significant subjects of oncological research (Broekman et al., 2014). Many small-molecule inhibitors, often referred to as multi-kinase inhibitors, target these proteins to disrupt the signaling cascades that drive tumor progression. However, because this is a collective classification rather than a single molecular entity, the therapeutic implications and safety profiles vary significantly depending on the specific kinase being inhibited. Consequently, while these proteins are vital therapeutic targets, the term itself is often used as a placeholder in clinical databases for kinases that lack a more specific classification.

Other names

Miscellaneous tyrosine kinasesUnclassified tyrosine kinasesNon-specific tyrosine kinases

Competitive inhibition of the ATP-binding site within the kinase domain, preventing the phosphorylation of tyrosine residues on substrate proteins (Hubbard & Till, 2000).