NF2d9, or Upstream binding protein 1 (LBP-1a), is a human gene encoded by UBP1. It may also be known as: Upstream-binding protein 1; Transcription factor LBP-1; LBP-1B; LBP-1a; LBP1A; LBP1B. The encoded protein has an amino acid length of 540 and a mass of 60.5 kDa. Other isoforms may exist. NF2d9 is a member of the Grh/CP2 family, CP2 subfamily. Homologs of this gene exist in other organisms, including: Mouse, Yeast, Rat, Arabidopsis, Zebrafish, Frog, Chicken.