金山科研平台，产品价格货期咨询微信：jinshanbio Molecule Information: XBP1 Long Name: X-box Binding Protein 1 Aliases: HTF; TREB5; XBP2 Entrez Gene IDs: 7494 (Human); 22433 (Mouse); 289754 (Rat) Background: XBP1 X-box binding protein 1 (XBP1; also tax-responsive element-binding protein 5 (TREB5) is a ubiquitously expressed member of the bZIP family of proteins. The spliced form of XPB1 (XBP1S) is a 376 amino acid (aa), 55 kDa transcription factor essential for the unfolded protein response. XBP1S is formed during endoplasmic reticulum stress by IRE-1-mediated splicing that creates a 210 aa substitution for XBP1 aa 161 - 261.