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.
WORLD AND THEIR MAYORS. The list of the worldâs largest cities, by land area, is headed by New York Metro, with a total area of 8,700 square kilometres. Tokyo/Yokohama is in second place with almost 7,000 square kilometres, followed by ten cities from the US.