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Alanine transaminase (ALT), also known as alanine aminotransferase (ALT or ALAT), formerly serum glutamate-pyruvate transaminase (GPT) or serum glutamic-pyruvic transaminase (SGPT), is a transaminase enzyme (EC 2.6.1.2) that was first characterized in the mid-1950s by Arthur Karmen and colleagues. [1]
Although the enzyme kinetics (unimolecular rate constant (kcat), Km and kcat/km) of the two enzymes were not significantly different, human PARP-1 was found to have a two-fold higher specific automodification capacity than the rat enzyme, which the authors posited could account, in part, for the higher PARP activity in humans than rats. [12]
The human FOLH1 gene is positioned at the 11p11.12 locus of chromosome 11. The gene is 4,110 base pairs in length and composed of 22 exons. The encoded protein is a member of the M28 peptidase family. Orthologs of the human FOLH1 gene have also been identified in other mammals, including the 7 D3; 7 48.51 cM locus in mice. [16]
Liver function tests (LFTs or LFs), also referred to as a hepatic panel or liver panel, are groups of blood tests that provide information about the state of a patient's liver. [1] These tests include prothrombin time (PT/INR), activated partial thromboplastin time (aPTT), albumin , bilirubin (direct and indirect), and others.
The cloned enzyme donor immunoassay (CEDIA) involves genetically engineering an enzyme (e.g., beta-galactosidase) into two inactive fragments: a small enzyme donor (ED) conjugated with the drug analog, and a larger enzyme acceptor (EA). When the two fragments associate, the full enzyme converts a substrate into a cleaved colored product.
In humans, terminal transferase is encoded by the DNTT gene. [5] [6] As a member of the X family of DNA polymerase enzymes, it works in conjunction with polymerase λ and polymerase μ, both of which belong to the same X family of polymerase enzymes. The diversity introduced by TdT has played an important role in the evolution of the vertebrate ...
Cardiac markers are used for the diagnosis and risk stratification of patients with chest pain and suspected acute coronary syndrome and for management and prognosis in patients with diseases like acute heart failure. Most of the early markers identified were enzymes, and as a result, the term "cardiac enzymes" is sometimes used. However, not ...
Human enzymes start to denature quickly at temperatures above 40 °C. Enzymes from thermophilic archaea found in the hot springs are stable up to 100 °C. [ 13 ] However, the idea of an "optimum" rate of an enzyme reaction is misleading, as the rate observed at any temperature is the product of two rates, the reaction rate and the denaturation ...