Heat shock factor binding protein 1 (HSBP1) is a 76 amino acid protein that binds to heat shock factor 1(HSF1), which is a transcription factor involved in the HS response. HSBP1 is nuclear-localized and interacts with the active trimeric state of HSF1 to negatively regulated HSF1 DNA-binding activity. This protein was overexpressed in E. coli and was purified to apparent homogeneity by using conventional column chromatography techniques. Alternative Names: NPC A 13 protein, HSF1BP protein, Nasopharyngeal carcinoma associated protein 13 protein, HSBP -1, Heat shock factor binding protein 1 protein, Nasopharyngeal carcinoma-associated protein 13 protein, NPC-A-13 protein, Heat shock factor-binding protein 1 protein, HSBP 1 protein, HSBP -1 protein, HSBP1, NPCA 13 protein, NPC-A-13 protein, , HSBP 1