[Term] id: PR:000037222 name: X-box-binding protein 1 isoform 1 def: "An X-box-binding protein 1 that is a translation product of some mRNA whose exon structure and start site selection renders it capable of giving rise to a protein with the amino acid sequence represented by UniProtKB:O35426-1 or a 1:1 ortholog thereof." [PRO:CNA, PMID:17979529] comment: Category=sequence. Note: This form is a product of translation of XBP1 pre-mRNA. synonym: "XBP1/iso:1" EXACT PRO-short-label [PRO:DNx] synonym: "pXBP1(U)" EXACT [PMID:17979529] synonym: "XBP-1U" EXACT [] property_value: has_archetype PR:O35426-1 is_a: PR:000017476 ! X-box-binding protein 1