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.
Pay by Location. Electrical engineering salaries in the District of Columbia topped those in the 50 states in the 2011 government survey. This district paid 530 electrical engineers an average of $104,610 per year. California had the highest pay among the states, with 20,620 engineers averaging $103,160 per year.