in view of the high phosphofructokinase and pyruvate kinase activities present in collecting ducts , their relatively low hexokinase activities and their relatively pale immunostaining for hexokinase indicate that glycolytic substrates which feed into the pathway subsequent to the initial phosphorylation step , rather than glucose , may be the major energy source for the rat renal papilla .
C0019472
hexokinase
C0031715
phosphorylation