The sulfonium salt S-adenosylmethionine is one of the most widely used biological methylating agents. It is formed by the ATP activation of methionine. One of the most benifical uses of this salt is to convert norepinephrine to epinephrine (adrenaline). Many times this conversion happens in flight or fight organs, which leads to vasodilatation. This vasodilatation in turn leads to an increased blood flow to the organ/tissue or interest.
The reaction shown is the formation of S-Adenosylmethionine. This process occurs in two steps as can be seen. The first step cleaves the whole phosphate of the ATP. However before the sulfur of methionine attacks the C5` atom of ATP (via SN2) there is further hydrolysis of the cleaved tri-phosphate into two inorganic phosphates (di and mono).
Chemistry is the study of matter and the interactions between different types of matter and energy. The fundamental building block of matter is the atom. An atom consists of three main parts: protons, neutrons, and electrons. Protons have a positive electrical charge. Neutrons have no electrical charge. Electrons have a negative electrical charge. Protons and neutrons are found together in what is called the nucleus of the atom. Electrons circle around nucleus.
Chemical reactions involve interactions between the electrons of one atom and the electrons of another atom. Atoms which have different amounts of electrons and protons have a positive or negative electrical charge and are called ions. When atoms bond together, they can make larger building blocks of matter called molecules.
