Unconjugated Rabbit anti-Mouse, Rat BRN3B Polyclonal Antibody [IgG]

BRN3B; class 4; transcription factor 2; Brain specic homeobox/POU domain protein 3B; Brain-3B; Brain-specic homeobox/POU domain protein 3B; Brn-3B; BRN3.2; Brn3b POU domain transcription factor; PO4F2_HUMAN; POU class 4 homeobox 2; POU domain; POU domain class 4 transcription factor 2; POU domain protein; POU4F2.

The Brn family of transcription factors are found in a highly restricted subset of neurons and are critical to the early embryonic development of the central nervous system. Brn-1 and Brn-2 are class III POU (Pit-Oct-Unc) domain proteins, whereas Brn-3 is a class IV POU domain protein. Three Brn-3 proteins have been described and are designated Brn-3a, Brn-3b and Brn-3c. While Brn-3a and Brn-3c stimulate transcription, Brn-3b generally functions as a transcriptional repressor. However, Brn-3b, but not Brn-3a, has been shown to regulate the expression of the acetylcholine receptor. Interestingly, Brn-3a has two functional transactivating domains, one at the amino-terminus and one at the carboxy-terminus. Brn-2 is thought to be involved in smooth muscle cell development and differentiation.