15 million people were self-employed in 2015, or 10.1 percent of all U.S. workers. Self-employment continues to be an important source of jobs in the United States. In 2015, 15.0 million people, or 10.1 percent of total U.S. employment, were self-employed, including those who had incorporated their businesses and those who had not.
DNA helicase is the enzyme that unwinds the DNA double helix by breaking the hydrogen bonds down the center of the strand. It begins at a site called the origin of replication, and it creates a replication fork by separating the two sides of the parental DNA.
Helicase is also known as a motor protein due to its ability to move down the double-stranded DNA strand and unzip it into two single strands. While unwinding the DNA strands, helicase converts chemical energy from ATP or NTP into mechanical energy. This enzyme is a key component of DNA replication, transcription and translation. Without helicase, DNA would not be able to unwind and undergo either process, and cells would not be able to divide.