Minerals containing this group include turquoise and apatite.
In the urea cycle, it is produced along with citrulline in the reaction catalyzed by ornithine trans-carbamylase. Minerals containing this group include turquoise and apatite. In the first step of the Calvin cycle, a substance with two of these groups is carboxylated. Glycolysis begins with the transfer of one of these groups to glucose by the enzyme hexokinase. The major energy source in the cell consists of the nucleo-base adenine, the sugar ribose, and three of these groups. For 10 points, name this ion that is found in the backbone of DNA and has the formula PO4 three minus. 
In the urea cycle, it is produced along with citrulline in the reaction catalyzed by ornithine trans-carbamylase.
phosphate [prompt on formula answers] 