... mitogen-activated protein kinase (p38 MAPK) and cJun-N-terminal kinases (JNKs) as well as metabolic adjustments. The latter were assessed by examining temperature effects on the activity of the key glycolytic enzyme pyruvate kinase (PK). The expression of Hsp70 and Hsp90 was activated when mussels were...

... activities of oxidative and glycolytic enzymes. Mass-specific activity of the oxidative enzyme citrate synthase (CS) scaled negatively with body size in each species, with scaling coefficients ranging from –0.15 to –0.19, whereas the glycolytic enzyme pyruvate kinase (PK) showed positive scaling...

...Stefanos Dailianis; Martha Kaloyianni SUMMARY The present study investigates the transduction pathway mediated by cadmium in isolated digestive gland cells of mussel Mytilus galloprovincialis . The effects of cadmium treatment on a key glycolytic enzyme, pyruvate kinase (PK), and on Na + /H...

.... In this study, we obtained partial clones of rainbow trout cDNAs coding for a glucose transporter (Glut2), and for the enzymes 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase (6PF-2K/F-2,6BPase), fructose-1,6-bisphosphatase (FBPase) and pyruvate kinase (PK). Their deduced amino acid sequences were highly...

...Basile Michaelidis; Artemis Pallidou; Paraskevi Vakouftsi ABSTRACT The aims of the present study were to describe a possible correlation between the regulation of the key glycolytic enzyme pyruvate kinase and the acid–base status in the haemolymph and in several other tissues of land snails during...

... conditions. Table 3. Kinetic properties of pyruvate kinase from the ventricle of Anodonta cygnea after perfusion without ( 5-HT) or with (+5-HT) serotonin In order to determine whether the changes in PFK kinetic properties induced by serotonin were due to enzyme phosphorylation, enzyme...

... Busycon canaliculatum (L.). Incubating tissues in vitro under anoxic conditions stimulated changes in muscle fructose-2,6-bisphosphate levels and pyruvate kinase kinetics (K m values for phosphoenolpyruvate, values for L-alanine) that were virtually equivalent to those that occur in vivo . Additions...