Period 5 element blood cells in the body. Tin is a chemical element with the symbol Sn (for ) and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows chemical similarity to both neighboring group 14 elements, germanium and lead and has two possible oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table. Tin is obtained chiefly from the mineral cassiterite, where it occurs as tin dioxide, SnO. This silvery, malleable
Sn-glycerol-1-phosphate dehydrogenase encoding glycerol-1-phosphate dehydrogenase has been detected in all the archaeal species and has not been found in any bacterial or eukaryal species. "sn"-glycerol 1-phosphate produced by this enzyme is the most fundamental difference by which Archaea and bacteria are discriminated. Sn-glycerol-1-phosphate dehydrogenase In enzymology, a "sn"-glycerol-1-phosphate dehydrogenase () is an enzyme that catalyzes the chemical reaction The 3 substrates of this enzyme are sn-glycerol 1-phosphate, NAD, and NADP, whereas its 4 products are glycerone phosphate, NADH, NADPH, and H. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD or NADP