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A protein kinase inhibitor (PKI) is a type of enzyme inhibitor that blocks the action of one or more protein kinases. Protein kinases are enzymes that phosphorylate (add a phosphate, or PO 4, group) to a protein and can modulate its function. The phosphate groups are usually added to serine, threonine, or tyrosine amino acids on the protein.
Phosphoinositide 3-kinase inhibitors (PI3K inhibitors) are a class of medical drugs that are mainly used to treat advanced cancers. They function by inhibiting one or more of the phosphoinositide 3-kinase (PI3K) enzymes, which are part of the PI3K/AKT/mTOR pathway. This signal pathway regulates cellular functions such as growth and survival. It ...
Protein phosphorylation is a reversible post-translational modification of proteins in which an amino acid residue is phosphorylated by a protein kinase by the addition of a covalently bound phosphate group. Phosphorylation alters the structural conformation of a protein, causing it to become activated, deactivated, or otherwise modifying its ...
Pages in category "Protein kinase inhibitors" The following 62 pages are in this category, out of 62 total. This list may not reflect recent changes. ...
A tyrosine kinase inhibitor (TKI) is a pharmaceutical drug that inhibits tyrosine kinases. Tyrosine kinases are enzymes responsible for the activation of many proteins by signal transduction cascades. The proteins are activated by adding a phosphate group to the protein (phosphorylation), a step that TKIs inhibit. TKIs are typically used as ...
The PI3K-mTOR pathway leads to the phosphorylation of p70S6K, a kinase that facilitates translational activity, [31] [32] further suggesting that PI3Ks are required for the protein-synthesis phase of LTP induction instead. PI3Ks interact with the insulin receptor substrate (IRS) to regulate glucose uptake through a series of phosphorylation events.
As of 2017, an estimated 29% of approved drugs are enzyme inhibitors [96] of which approximately one-fifth are kinase inhibitors. [96] A notable class of kinase drug targets is the receptor tyrosine kinases which are essential enzymes that regulate cell growth; their over-activation may result in cancer. Hence kinase inhibitors such as imatinib ...
mTOR inhibitors are a class of drugs used to treat several human diseases, including cancer, autoimmune diseases, and neurodegeneration. They function by inhibiting the mammalian target of rapamycin (mTOR) (also known as the mechanistic target of rapamycin), which is a serine/threonine-specific protein kinase that belongs to the family of phosphatidylinositol-3 kinase (PI3K) related kinases ...