This domain can be found in Zap1 present in Saccharomyces cerevisiae. Zap1 regulates S. cerevisiae which mediates the transcription of genes encoding uptake vacuolar transporters. This domain corresponds to zinc finger 2 (zf2) which has been shown to be a constitutive transcriptional activator. The two zinc fingers interactions stabilizes Zn(II)-binding [1].

1: Solution structure of a Zap1 zinc-responsive domain provides insights into metalloregulatory transcriptional repression in Saccharomyces cerevisiae. Wang Z, Feng LS, Matskevich V, Venkataraman K, Parasuram P, Laity JH; J Mol Biol. 2006;357:1167-1183. PMID:16483601