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Knowledge of the energetic state of tissue is required in a wide range of experimental studies, particularly those investigating the decline and recovery of cellular metabolism after metabolic stress. Such information can be obtained from high-performance liquid chromatography (HPLC) determination of tissue levels of adenine nucleotides (ATP, ADP, and AMP) and their interrelationship in the tissue...
Ubiquitin activating enzyme (UAE, UBE1, or E1) and seven known homologous “E1s” initiate the conjugation pathways for ubiquitin and 16 other ubiquitin-like modifiers (ULMs) found in humans. The initial step catalyzed by E1s uses adenosine triphosphate (ATP) to adenylate the C terminus of the appropriate ULM and results in the production of inorganic pyrophosphate (PPi). The mechanism of these enzymes...
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