Which amino acid is one that is targeted for phosphorylation to modulate the activity of an enzyme?

Explanation:

Serine threonine, tyrosine in eukaryotes and also histidine in prokaryotes and plants are the most typically phosphorylated amino acids (though it is now known to be common in humans). These phosphorylations have crucial and well defined functions in the pathways of signalling and metabolism.

Phosphorylation is the most frequent process of protein function regulation and cellular signal transmission. While phosphorylation in bacterial proteins has been seen, in eukaryotic cells it is far more prevalent.

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in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: