HSPBAP1(HEAT-SHOCK 27-KD PROTEIN-ASSOCIATED PROTEIN 1)，the other entities represented in this entry is DIRC3 FUSION GENE. HSPBAP1 shares 80% identity with the rat homolog, PASS1. The HSPBAP1 gene is mapped to chromosome 3q21.1. RT-PCR detected expression of HSPABAP1 in all tissues examined except brain. Highest expression was detected in thymus, ovary, and pancreas. The HSPBAP1 gene contains 8 exons. The putative 451-amino acid truncated HSPBAP1 protein retained its JmjC and HSP27 -interacting domains, which are associated with chromatin remodeling and stress response, respectively.