Out of curiosity, how do you define role (anabolic or catabolic ) of a hexokinase?

Dear Shakeel...

I think that you cannot say that an enzyme could be anabolic or catabolic only by its ATP affinity. Remember that many enzymes are modulated in an alosteric fashion by differences in ATP concentrations and also catalyze in either direction depending on thermodynamics and metabolic fluxes. Indeed, to propose an anabolic or catabolic role, you must consider whole metabolic flux and the end-products; i.e. if the metabolic pathway is used in order to extract energy or use it for synthesis.