Disclosed herein is an isolated polypeptide comprising the amino acid
sequence set forth in SEQ ID NO: 1. The isolated polypeptide binds to the
DNA binding domain located from -550 to -487 in the promoter of the human
TNF-.alpha. gene. Additionally, the level of the mRNA transcript encoding
the isolated polypeptide is substantially increased in response to LPS
stimulation in cultured THP-1 cells.