Human 10 box binding protein 1 is required for the transcription of a subset of human class 2 major histocompatibility genes and forms a heterodimer with c fos . ^^^
All three proteins , TREB 5 , TREB 7 and TREB 36 , contained a leucine zipper structure and basic amino acid domain , which are conserved in FOS , JUN and CREB , and also had multiple potential phosphorylation sites . ^^^