As an essential amino acid, leucine cannot be synthesized by animals. Consequently, it must be ingested, usually as a component of proteins. In plants and microorganisms, leucine is synthesised from pyruvic acid by a series of enzymes:
Electricians in California earned an average of $27.33 per hour and $56,840 per year as of May 2009, according to the U.S. Bureau of Labor Statistics. Average annual salaries in California were more than 11 percent above the U.S. national average of $50,850.
For those looking to make money, Electricians in Boston enjoy an exceptional pay rate, 40 percent above the national average. Electricians will also find cushy salaries in Chicago (+36 percent), Seattle (+30 percent), San Diego (+26 percent), and Los Angeles (+13 percent). Orlando ranks last in the field for pay, reporting salaries 17 percent below the national average.