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In biochemistry, isozymes (also known as isoenzymes or more generally as multiple forms of enzymes) are enzymes that differ in amino acid sequence but catalyze the same chemical reaction. Isozymes usually have different kinetic parameters (e.g. different K M values), or are regulated differently.
View/Edit Human View/Edit Mouse Pyruvate kinase isozymes M1/M2 (PKM1/M2), also known as pyruvate kinase muscle isozyme (PKM), pyruvate kinase type K , cytosolic thyroid hormone-binding protein (CTHBP), thyroid hormone-binding protein 1 (THBP1), or opa-interacting protein 3 (OIP3), is an enzyme that in humans is encoded by the PKM2 gene .
The regulation of the synthesis of glutamate from α-ketoglutarate is subject to regulatory control of the Citric Acid Cycle as well as mass action dependent on the concentrations of reactants involved due to the reversible nature of the transamination and glutamate dehydrogenase reactions. [2]
Four isozymes of pyruvate kinase expressed in vertebrates: L (liver), R (erythrocytes), M1 (muscle and brain) and M2 (early fetal tissue and most adult tissues). The L and R isozymes are expressed by the gene PKLR, whereas the M1 and M2 isozymes are expressed by the gene PKM2. The R and L isozymes differ from M1 and M2 in that they are ...
In cell biology, protein kinase C, commonly abbreviated to PKC (EC 2.7.11.13), is a family of protein kinase enzymes that are involved in controlling the function of other proteins through the phosphorylation of hydroxyl groups of serine and threonine amino acid residues on these proteins, or a member of this family.
Many drugs may increase or decrease the activity of various P450 isozymes either by inducing the biosynthesis of an isozyme (enzyme induction) or by directly inhibiting the activity of the P450 (enzyme inhibition). A classical example includes anti-epileptic drugs, such as phenytoin, which induces CYP1A2, CYP2C9, CYP2C19, and CYP3A4.
27273 Ensembl ENSG00000004799 ENSMUSG00000019577 UniProt Q16654 O70571 RefSeq (mRNA) NM_002612 NM_013743 RefSeq (protein) NP_002603 NP_038771 Location (UCSC) Chr 7: 95.58 – 95.6 Mb Chr 6: 5.48 – 5.5 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Pyruvate dehydrogenase lipoamide kinase isozyme 4, mitochondrial (PDK4) is an enzyme that in humans is encoded by the PDK4 gene. It ...
Function: An enzyme that is produced by animals that forms part of the innate immune system and is abundant in the secretions of saliva, human milk, tears, and mucus. It functions as an antimicrobial agent by splitting the peptidoglycan component of bacterial cell walls, which then leads to cell death.