Adenosine triphosphatase of Aspergillus nidulans: existence of isoenzymes of Ca2+-ATPase.
Ca2+-ATPase activity increased five- to six fold when the cells were subjected to growth at 37 degrees C in protein hydrolysate-supplemented media as compared to that of the cells grown in minimal media. One major isoenzyme and one minor isoenzyme were present in minimal-medium-grown cells while two major isoenzymes were present in the cells grown in protein-supplemented media. When the cells were subjected to heat stress (43 degrees C), they exhibited significantly decreased activity as compared to 37 degrees C grown cells. However, all the cultures subjected to growth at 43 degrees C showed two isoenzymes independent of growth medium.
D001233:Aspergillus nidulans / Q000201:enzymology*; D000252:Calcium-Transporting ATPases / Q000378:metabolism*; D006358:Hot Temperature; D007527:Isoenzymes / Q000378:metabolism*; D008274:Magnesium / Q000494:pharmacology
D007527:Isoenzymes; D000252:Calcium-Transporting ATPases; D008274:Magnesium