4EBP1, or Eukaryotic translation initiation factor 4E binding protein 1, is a human gene encoded by EIF4EBP1. It may also be known as: Eukaryotic translation initiation factor 4E-binding protein 1; 4E-BP1; eIF4E-binding protein 1; Phosphorylated heat- and acid-stable protein regulated by insulin 1; PHAS-I; BP-1. The encoded protein has an amino acid length of 118 and a mass of 12.6 kDa. 4EBP1 is a member of the EIF4E-binding protein family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Chicken.