Contains Hsp83 sequence from -852bp to +3963bp. DNA fragments have been inserted as markers into the transcription unit: a 252bp fragment ('SV') corresponding to nucleotides 1493-1708 of the SV40 late gene coding region has been inserted into the intron at position 428, a 300bp fragment ('SX') corresponding to nucleotides 1507-1782 of the SV40 late gene coding region has been inserted into the intron at position 585 and a 795bp fragment ('CAT') of the Escherichia coli chloramphenicol acetyltransferase gene has been inserted into the second exon.