Transcription factor-DNA, molecular model. Strand of DNA (deoxyribonucleic acid, yellow) being acted on by a transcription factor protein (red and green). Transcription factors bind to DNA during a process called transcription, where the DNA is converted to RNA (ribonucleic acid), which will then be translated into a protein product. This transcription factor is for FOXP2 (forkhead box protein P2), which plays a role in brain and lung development. In humans, mutations of FOXP2 cause speech and language disorders. This is a solid surface representation of the FOXP2 structure. For a ribbon representation , see C004/3579.