Contains four copies of Hsp26 genomic DNA from -543bp to -373bp, upstream of a lacZ reporter which is under the control of a minimal Sgs3 promoter. Each Hsp26 fragment contains seven point mutations: Nucleotide substitution: A-435G. Nucleotide substitution: A-434C. Nucleotide substitution: A-431G. Nucleotide substitution: A-429G. Nucleotide substitution: A-427T. Nucleotide substitution: A-426C. Nucleotide substitution: A-425T. In addition, each region from -436 to -423bp is flanked by a 4bp insertion of DNA.