Once activated, the enzyme switches off ATP-consuming anabolic pathways and switches on ATP-producing catabolic pathways [ 50], such as fatty acid oxidation (elevated expression of ECH1, ECHS1, ETFDH, CABC1) and amino acid catabolism.
To probe the nature of this ATP-producing mechanism further, we tested the activity of OCT, a key enzyme required for the production succinyl-CoA from oxalyl-CoA [25].
One of our goals was to analyse the 'forward' (ATP-consuming) and 'reverse' (ATP-producing) reactions; that information has not previously been derived from recombinant enzyme.
An increased ATP levels in subsarcolemmal space would be in accord with the idea that enzymes physically associated with the KATP channel subunits produce ATP and that infection with SUR2A increases number of ATP-producing KATP channel protein complexes [4,5].
As we discuss later, the patterns arise due to the effective rescaling of the diffusion coefficients of ADP and ATP that the enzyme produces.
They can produce enzymes that alter or destroy drugs.
In situations when ATP cannot be easily produced in heterotrophic systems (e.g., during hypoxia, chilling, or phosphate starvation), pyrophosphate- instead of ATP-utilizing enzyme forms are used to drive glycolysis [ 33, 34, 65, 66].
All kinases without the lid domain are ATP-dependent, suggesting that this ribokinase family originated from an ATP-dependent enzyme without a lid.
Mahajan, V.B. et al. Creatine kinase, an ATP-generating enzyme, is required for thrombin receptor signaling to the cytoskeleton.
