General transcription factor with prominent roles in controlling histone levels and stability. Binds and regulates the activities of many promoters, including those controlling the expression of all four types of canonical histones. Is also involved in the centromeric loading of cnp1 and maintenance of centromere identity. Moreover, regulates the expression of cdc2, a protease capable of histone clipping. Leads to lethality. Was initially reported as a potential telomeric factor as it harbors two helix-loop-helix dsDNA binding domains which are recurrently found in telomeric proteins. However, teb1 was shown to have higher affinity for the vertebrate telomere repeat, TTAGGG, than to fission yeast telomere repeats in vitro.