The MTHFR gene provides instructions for making an enzyme called methylenetetrahydrofolate reductase. This enzyme plays a role in processing amino acids, the building blocks of proteins.omocystinuria-caused by mutations in the MTHFR gene. At least 40 mutations in the MTHFR gene have been identified in people with homocystinuria, a disorder in which the body is unable to process certain amino acids properly.
What city has the largest population? Coming in at 8.1 million people, New York is the largest US city. When we looked into further into the results, we were surprised at which cities made the list. In fact, we searched beyond the 10 largest US cities by population as defined by 2010 U.S. Census, and also looked at the 10 largest metro areas.
Austin, Texas, moved from 13th to 11th, pushing Jacksonville, Fla., and Indianapolis each down a spot. The top three largest cities remain New York, Los Angeles, and Chicago, in that order. New York City boasts a population of more than 8 million.