Normal Function. The TFAP2B gene provides instructions for making a protein called transcription factor AP-2Î². A transcription factor is a protein that attaches (binds) to specific regions of DNA and helps control the activity of particular genes. Transcription factor AP-2Î² is one of a group of related proteins called AP-2 transcription factors.
For other uses, see Chicago (disambiguation). Chicago (/Êáµ»ËkÉËÉ¡oÊ/ or /Êáµ»ËkÉËÉ¡oÊ/), officially the City of Chicago, is the third-most populous city in the United States. With over 2.7 million residents, it is the most populous city in the state of Illinois, and the Midwestern United States. It is the county seat of Cook County.
Cook County is a county in the United States state of Illinois. As of the 2010 census, the population was 5,194,675. With more than 40 percent of all Illinois residents, it is the most populous county in Illinois and the second-most populous county in the United States after Los Angeles County, California. Its county seat is Chicago, the third-most populous city in the United States.