Kinase, Phosphorylase, and Phosphatase?

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m25

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So my understanding is that:
Kinase and Phosphorylase always add phosphate group to a substrate
Phosphatase always removes phosphate group from a substrate

Is this correct? And what is the difference between Kinase and Phosphorylase?

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A kinase transfers a phosphate group from a high energy compound such as ATP - so these reactions generally consume an ATP.

A phosphorylase catalyzes the adding of a inorganic phosphate group to a compound.

An example of a kinase is phosphofructokinase which takes fructose-6-phosphate to fructose-1,6-phosphate and uses an ATP (that donates the phosphate group). These are what we see in glycolysis.
 
A kinase transfers a phosphate group from a high energy compound such as ATP - so these reactions generally consume an ATP.

A phosphorylase catalyzes the adding of a inorganic phosphate group to a compound.

An example of a kinase is phosphofructokinase which takes fructose-6-phosphate to fructose-1,6-phosphate and uses an ATP (that donates the phosphate group). These are what we see in glycolysis.

"Phosphorylase" refers specifically to an enzyme that catalyzes the phosphorolytic removal of a non-reducing terminal glucose residue of a glucan. Eg: uses inorganic phosphate to "cleave" a closed-chain (non-reduced) glucose off of a glucose chain.

Otherwise, enzymes that remove phosphates are generally termed phosphatases.
 
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